Topic: Lingenfelter GT2-3 Camshaft & Spring Kit

[bluedevil]

Extensive engine dyno testing at Lingenfelter has produced some of the best street camshaft profiles available for the LS1, LS6 & LS2 engines.  The Lingenfelter "GT2-3" camshaft was designed to produce excellent power while still maintaining a  smooth idle for automatic or six speed manual transmission equipped vehicles that can be daily driven.  Springs included are GM LS6 valve springs and should be used with the stock retainers and locks. 

Tests on the LS1-GT2-3 have shown 25-30 HP improvements over factory LS1, LS2 camshafts and this camshaft can be used in 350 CID - 427 CID applications.  This camshaft also works well in supercharged or turbocharged applications.

All Lingenfelter camshafts ground by Competition Cams to Lingenfelter specifications on induction hardened cores for exceptional durability and long life.

    * Model: L210125297
    * Manufactured by: Lingenfelter



Cam Number            Duration @ .050                 Valve Lift        Rocker Arm           Centerline
LS1-GT2-3                         207 / 220              .571" / .578"        1.7 ratio             118.5


As im comming to an end on my exterior mods,its time to mod the performance department in the AV.
My question is,..... is this suitable to our 325 CID?

http://chevyavalancheperformance.com/shop/index.php?main_page=product_info&cPath=280_281_282&products_id=497

[Richie_Rich]

Lingenfelter has been around for a long and make some great reliable HP.
It's too bad John died several years ago, but the company lives on.

I know a guy that has two Lingenfelter Corvettes and holy crap are they fast.

I'd trust anything from Lingenfelter.

[Main One]

Two thoughts come to my mind besides whether this will work with our slighter smaller than LS1 engines, which it should.

1.  This is a pretty good price, although you may want to consider also upgrading pushrods when doing this for another $100+.

2.  Why not go bigger (longer duration)?

Expanding upon the 2nd thought.  FlaBouy believes he and I are running the same cam design, even though mine's a Crane and his a DiVinci.  At 0.050, our durations are 216 and 224, both at 0.551 lift.  Knowing what I know now, I would be more tempted to go bigger than I did.  If I felt a higher peak lift number was called for in my application, I could go to 1.8 rockers vice the stock 1.7, so I would be looking for longer duration.

You of course are blown, and so is FlaBouy.  I believe he is very satisfied with his cam together with the blower.  For both of us, there is no idle or bottom-end issue, other than needing to bump idle speed up a little above the stock 550 rpm.  I think KY_Bob is at 600-something.  My lowest level is 700.

Bottom line, I think this would work in your application, and give you more power.  It's a lot of work to put in a cam so if you are going to go to the trouble, you may as well go with what is best for your application.  I forget the specs for Bob's cam - it may be very close to this Lingenfeltner.  His is not of as long duration as mine and FlaBouy's.

[MyBigToy]

I don't know enough about cams to give you an opinion but you should check out PT.net. There are a ton of threads over there about cams. I do know the GT2-3 is one of the cams that I've seen threads on and I believe Main One's comments follow the thoughts over there.

As an aside, I don't remember - have you done an intercooler or meth yet?

[MyBigToy]

I did some reading @ PT.net yesterday and saw many recommendations that the GT2-3 cam is good for a Magnacharger. I'd suggest you contact Lingenfelter, Crane (since they are out of business) and some of the other cam manufacturers/suppliers to see what they recommend. With your Vortec you will want to not lose any low-end torque in addition to adding better breathing up top. I would think your best choice would be somewhat different than for a Magnacharger. The cam manufacturers/suppliers will want to know as much about your application as you can provide - Vortec, 2600 stall, weight, intercooled, meth injection, nitrous, additional add-ons, etc). The more information you can supply, including what you want (hp/torque/combination of both, drag racing, stop-light runs, etc.), the better choice they can help you make. Keep in mind future mods also - if you ever plan to replace the heads, the cam choice will be different than with the stock heads.

I did find an interesting cam that was recommended by Vinci for added torque - thier Ultra Torque cam. It's good for 1500-5800 rpm, provides high torque gains, and doesn't negatively affect gas mileage/power. Specs are:

duration @ 0.004" 272*/280*
duration @ 0.050" 210*/218*
lift 0.551/0.551
overlap 48*
lsa 116*

This looks like an interesting cam for a Magnacharger. IIRC, on stock heads the valves start to float somewhere around 6K so it does leave a little on the table if you were willing to push things. I'm shifting at 5750.

I also read through Bob's thread @ CAFCNA (there's a lot of good info in it) and his cam is slightly different than Flabouy's/Main One's/GT2-3/this one. You might want to talk to him some also.

[MyBigToy]

Here's a link I found to some Comp Cams info that provides some pretty good insight:

http://www.compcams.com/Technical/FAQ/CamandValveQuestions.asp

And here's another sheet that gives a really good visual of cam terms:

http://www.compcams.com/Technical/FAQ/LSAproperties.asp

[bluedevil]

Thanx Joe for the links and info.  I will look into it

I think im doing this before the intercooler but nor sure yet.  The darn cooler is $1800

[MyBigToy]

Here's another link I found while looking around:

http://www.vincihighperformance.com/camshaft%20spec%20list%20page%20ls%20truck.html

The second cam is the one that I thought was interesting for a Magnacharger. The first one is the one that Flabouy's running.

Bob's running a 212/218 - 0.558/0.563 - 115 lsa

[bluedevil]

Here's another link I found while looking around:

http://www.vincihighperformance.com/camshaft%20spec%20list%20page%20ls%20truck.html

The second cam is the one that I thought was interesting for a Magnacharger. The first one is the one that Flabouy's running.

Bob's running a 212/218 - 0.558/0.563 - 115 lsa

Very cool thanx.   We should GTG and do CAM swaps

[KY_BOB]

Here's another link I found while looking around:

http://www.vincihighperformance.com/camshaft%20spec%20list%20page%20ls%20truck.html

The second cam is the one that I thought was interesting for a Magnacharger. The first one is the one that Flabouy's running.

Bob's running a 212/218 - 0.558/0.563 - 115 lsa

Yep, that's what I'm running.  I was scared of going too big, afraid that I would lose some bottom end.  I can tell you that I lost nothing, if anything, it's stronger now at 2000 rpm than it was before.

I don't regret my cam choice but I certainly wouldn't go any smaller/milder.  I considered the GT2/3 as well and ended up with mine.  Even though the lift is slightly less than the GT 2/3, the ramps on the Comp high lift series are much more aggressive.

IMHO, I would go with either the cam that I have or the one that Main One and Flabouy has.  If you have no intentions of changing the torque converter, probably the one that I have.

That said, the GT 2/3 isn't that much milder than mine, so it wouldn't be a bad choice and the price is right.

[MyBigToy]

IMHO, I would go with either the cam that I have or the one that Main One and Flabouy has.  If you have no intentions of changing the torque converter, probably the one that I have.

Mick's already got a Trailblazer stall. I don't remember if you are aware that I finally got around to installing the TT2600 & HD-2 on my truck.

[Main One]

Go big, or don't bother!   

[MyBigToy]

I might consider a cam somewhere down the road but not right now. My daughter got into my mod funds by running into the back of a friend's car.  She's had more accidents in a little over a year of driving than I've had the whole time I've been driving (soon to be 34 years and man, am I getting old!  ).

One of my concerns with going to a big cam is idle quality and the other is emissions. We have to pass emissions in St. Louis. They just changed the law last year so that they check ODBII codes; if there are no codes you get your "pass". If there are codes, they try the sniffer. If you fail, you fix the problem or no "pass". Prior to this, you either passed a mobile sniffer sometime within 3 months of renewal or they put you on a treadmill and shoved a sniffer up the tailpipe. With no way to currently tune, I would be concerned that it wouldn't pass with a large cam.

[Main One]

You wouldn't want to put a different cam in and not tune anyway.

If is set my idle speed to 800 rpm, like the new ones are at anyway, I don't think you would think anything of my idle quality.  I run it lower (700) at a certain coolant temp because I like the idle lope......

 

[MyBigToy]

Obviously I know you need to tune with a new cam. I can at least do some basic tweaks with my Predator.

What I'd really love to do is go to San Antonio and be done with it. Of course every time I say I'm done, I'm not.

Hey Blue, are you ready to let me have the HP Tuners that's sitting on your shelf collecting dust?    I've been watching for a used copy for quite a while but am always too late; they don't last long.

[KY_BOB]

Mick's already got a Trailblazer stall. I don't remember if you are aware that I finally got around to installing the TT2600 & HD-2 on my truck.

Guess that I had forgot that or it was during my absence. 

IMHO, the trailblazer converter is enough to go to the larger cam like Main One.  Some might say a higher stall speed is required.

MBT: I'm betting that the converter really woke your truck up off the line?

[MyBigToy]

MBT: I'm betting that the converter really woke your truck up off the line?

Dang right - it's a lot more fun now. The shop I had install it is a couple of brothers who drag race. The test drive was an eye-opening experience for the one brother. He couldn't believe how fast the truck was (SOTP). He said he has no doubt that the truck would easily outrun a Mustang GT. I still don't have the 3.25 pulley on yet but I'll be getting it done before the end of spring. I'm just trying to find the time to get to the shop and borrow some tools for the install. The shop that installed the Maggie is going to help - one of the brothers has a Magnacharged 2000 FRC Corvette that he's pullied down. I'd love to get your help to work on the converter lockup - it doesn't lock up until 60 mph and I want to go back at least to the stock 45 mph setting under light throttle input.

[KY_BOB]

I'd love to get your help to work on the converter lockup - it doesn't lock up until 60 mph and I want to go back at least to the stock 45 mph setting under light throttle input.

That's pretty easy to do with HPT and I'm licensed for your truck.  Have you ever looked at HPT?  I'm wondering if I can email you the unlicensed copy that I have saved on this computer.  hmmmm

[MyBigToy]

That's pretty easy to do with HPT and I'm licensed for your truck.  Have you ever looked at HPT?  I'm wondering if I can email you the unlicensed copy that I have saved on this computer.  hmmmm

Yes, but I've not decided that I'm ready to commit the time required for the learning curve. If you take a look at reply 14 I've asked Blue if he's ready to let me have his copy of HPT that's gathering dust on his shelf..........  I've been watching different forums for a used copy for at least a year but never find the thread until they are already sold. They don't last long unless someone wants almost as much as a new copy.

[KY_BOB]

Yes, but I've not decided that I'm ready to commit the time required for the learning curve. If you take a look at reply 14 I've asked Blue if he's ready to let me have his copy of HPT that's gathering dust on his shelf..........  I've been watching different forums for a used copy for at least a year but never find the thread until they are already sold. They don't last long unless someone wants almost as much as a new copy.

I just thought that you might want to look at the tables and see how they are laid out.  It's 19.1mb.  I'm not sure if I could email it or not.  If you want me to try, PM me your email address.  I may have to send VCM editor in one email and VCM scanner in a second one.  If nothing else, you could decide what you want your lock-up points to be.  If we get a chance to GTG, I could change them to what you want in 5 minutes.

Mick, sorry for getting your cam thread off topic.

[MyBigToy]

I'm bringing this one back to the top. I found out today that I'll probably be getting some extra cash between now and the end of the year so I may end up doing a cam swap.

I've looked at the Vinci cams again and they now have accelerated lift cams. I think I've narrowed it down to one of these:

Cam # 079 - Ultra torque                     Cam # 112 - Street/performance/autocross

duration @ 0.004" 272*/280*                       0.004" 272*/280*
    "       @ 0.050" 210*/218*                       0.050" 210*/218* 
lift         0.551/0.551                                  .551/.551
overlap   46*                                             48*
LSA       116*                                            114*
RPM range 1500-6000 rpm                            1700-6000 rpm

So which is the better choice ( I'm leaning towards # 112) - remembering that I have to pass emissions? Or is there a better choice - re: Bob's or Main One's? Both of the above cams are supposed to provide much more torque but retain good idle characteristics and fuel mileage. 

[KY_BOB]

I'm bringing this one back to the top. I found out today that I'll probably be getting some extra cash between now and the end of the year so I may end up doing a cam swap.

I've looked at the Vinci cams again and they now have accelerated lift cams. I think I've narrowed it down to one of these:

Cam # 079 - Ultra torque                     Cam # 112 - Street/performance/autocross

duration @ 0.004" 272*/280*                       0.004" 272*/280*
    "       @ 0.050" 210*/218*                       0.050" 210*/218*  
lift         0.551/0.551                                  .551/.551
overlap   46*                                             48*
LSA       116*                                            114*
RPM range 1500-6000 rpm                            1700-6000 rpm

So which is the better choice ( I'm leaning towards # 112) - remembering that I have to pass emissions? Or is there a better choice - re: Bob's or Main One's? Both of the above cams are supposed to provide much more torque but retain good idle characteristics and fuel mileage.  

There is very little difference in those.  A wider LSA and the subsequent less overlap is usually beneficial for FI.  You don't want both valve open at the same time.  You don't need the scavenging effect of the exhaust pulling in the new intake charge because it is being blown in.

My point is that a wide LSA works great with FI.  That said, they are both pretty mild, even slightly milder than mine and if anything, I wish I had a little more cam.  

I spoke to Farmtruc before ordering mine, he pushed the Comp 220/220 on a 114 LSA on me.  I don't remember the lift but it was in the .580ish range.  (more aggressive than MainOne's, I know less duration but very aggressive ramps and less LSA with higher lift)  I thought that was a little too agressive for me given my limited boost at 2000-2500 range.  He normally plays with turbos that can produce full boost at that point.  I went milder.  I kind of wish that I had gone with the same cam as Main One.  I still think that the 220/220 is a little much but I'm certainly glad that I didn't go milder than mine.

As far as my concerns with emissions, my cats are propped up against the wall in my garage.  That was zero concern to me but I don't see that you will have an emissions problem with either and I would go for the slightly more aggressive one with the 114 LSA.  At no longer duration than that 114 LSA isn't that close but don't shoot me if you go with it and fail emessions.

There again, you could go one step hotter to the one that I have and still use the cheap and easy to find LS-6 springs.  Anything hotter than mine, you'll need either Comp 918's which are noisy or more expensive double springs and the matching retainers.

[Main One]

Off the top of my head, I believe mine's 216/224 @ 0.050, 0.551/0.551 lift with 1.7 ratio (stock) rockers.  FlaBouy believes it is the same grind, although from different manufacturers, as his.

[KY_BOB]

Off the top of my head, I believe mine's 216/224 @ 0.050, 0.551/0.551 lift with 1.7 ratio (stock) rockers.  FlaBouy believes it is the same grind, although from different manufacturers, as his.

It is the same cam.  His is a Vinci performance cam but they are ground by Crane and the specs are identical.  I think Vinci just reboxes the Crane cams or did.  I'm not sure that they are still in business.

[MyBigToy]

Here's another cam that looks pretty interesting to me. What's everyone think about this one for my truck? Any negatives, other than the additional expense for double springs & titanium retainers? It's from Thunder Racing and is specifically labelled for supercharged engines.

"TR Blower" - 214/230 .601/.579 117 LSA. Off Idle-6800 RPM Power Band. Broad power range. Different from our CheaTR with even less valve overlap for forced induction applications.  Stock like idle. Due to the fast ramp rate of this camshaft, the use of 1.8 rockers is not recommended.  Double valve springs and titanium retainers required for this cam.

I've not seen or don't remember seeing anywhere how high you can shift on the stock heads & bottom end - does anybody know? With this cam supposedly making power from off-idle to 6800 I'm thinking I could see some good gains at the higher end by extending my shift points from my current 5900 to at least 6200 (how high could I go?).

[oHIobellboy]

I'm reading it all but it's going right over my head.   Those numbers mess me up big time.

[MyBigToy]

I'm reading it all but it's going right over my head.   Those numbers mess me up big time.

You should go to PT.net & do some reading. Main One has what I would consider a fairly large cam for our trucks - naturally aspirated. He gets away with running a higher lift cam because he has a 2600 stall converter versus the stock 1600 stall. If you don't plan to add a higher stall you need a cam that provides good low-end as well as high-end power.

The other thing you could do is call a tech line - Comp Cams or Thunder Racing or Lingenfelter - and discuss with them what you want. You'll have to give them as much info as you can about your current setup and where you are going (are you going to add more power-adding mods in the future, a stall converter, etc). They can give you some choices after that. I'll nose around a little bit and maybe suggest a couple for you based on a stock truck but remember, I'm not a cam expert and am learning about them myself. I'll probably be calling a couple of tech lines before I make my final choice. I've got about 4 cams that I'm looking at right now.

[oHIobellboy]

You should go to PT.net & do some reading. Main One has what I would consider a fairly large cam for our trucks - naturally aspirated. He gets away with running a higher lift cam because he has a 2600 stall converter versus the stock 1600 stall. If you don't plan to add a higher stall you need a cam that provides good low-end as well as high-end power.

The other thing you could do is call a tech line - Comp Cams or Thunder Racing or Lingenfelter - and discuss with them what you want. You'll have to give them as much info as you can about your current setup and where you are going (are you going to add more power-adding mods in the future, a stall converter, etc). They can give you some choices after that. I'll nose around a little bit and maybe suggest a couple for you based on a stock truck but remember, I'm not a cam expert and am learning about them myself. I'll probably be calling a couple of tech lines before I make my final choice. I've got about 4 cams that I'm looking at right now.

I'll keep this in mind. I wonder how good the guys up the road at Summit Racing are with this?

[MyBigToy]

I'll keep this in mind. I wonder how good the guys up the road at Summit Racing are with this?

I suspect they would give good advice, assuming you get to the right person.

[MyBigToy]

OBB - here's some more info I found while looking around:

http://www.cammotion.com/Chevrolet-LS1-LS6-C198.aspx

Take a look at their naturally aspirated cam choices; I haven't looked the site over yet.
 
Edit: I've looked around a little and what you do is choose where you want to look - naturally aspirated for you. You'll get a list of cam choices; to get the specific recommendations for a given cam you click on it and you'll get a new page that explains specifics for that cam.

[MyBigToy]

OBB - here's a cam that I think would work pretty well for your truck and could support additional mods at a later date:

Comp Cams XTREME RPM HIGH LIFT XR265HR - 212/218 - .558/.563 w 1.7 rocker - 115 LSA   RPM range 1400 - 6700

I think this is the cam that KY_Bob's running.

[oHIobellboy]

Lots of info to look through. Thanks for all the help so far At 117,000 miles now I'm starting to worry about the effects of a cam upgrade on the valves and springs. OldVMer just traded his '03 at 220,000 miles when he lost a spring causing a major failure. Nothing done on his old avy except a tune years ago. He did his maintainence like he should also. Summit does have a clearance rack I may look through for any upgrades on the top end as far as heads or valves,springs and such. A guy from work said he buddy got heads there dirt cheap. If I end up doing this, I'd rather make sure I'm not going to have any problems in the near future.

[MyBigToy]

It's easy to go ahead and change the valve springs out when you are in there, and with the Comp Cam you need to change to at least the yellow LS6 springs anyway. As long as you've done your routine maintenance as you were supposed to (and knowing you, I suspect you have), I don't think you would have an issue. Now as to the tranny, that's a different story. You should at least upgrade to the Vette servo and I'd suggest also going with the billet 3-4 servo. You don't have to go into the tranny to do these upgrades.

Main One's got about 190K on his truck and isn't afraid to run it hard.

[Main One]

MBT - that cam you posted about yesterday for FI applications sounds like it would be a good one for you.

OBB - if you change the springs and cam timing set during a cam install, you'll be addressing a lot of issues which may actually help prevent some high-mileage problems.  My engine had over 100,000 miles on it when I installed the the cam - so far so good.  Use of premium oil does wonders.  Don't know what OldVMer's habits were, but I've used for the past 150,000+ miles redline synthetic 5w30.  Make up for the cost of it by changing it when the engine tells me it needs it instead of some worst-case dino oil established interval from decades ago.

Don't forget that if you do anything beyond very mild, you will need a custom tune, if for nothing else to kick up your idle speed.  I've currently got mine set at a minimum of 705 rpm.  Stock for my 03 it was 550.

[oHIobellboy]

MBT - that cam you posted about yesterday for FI applications sounds like it would be a good one for you.

OBB - if you change the springs and cam timing set during a cam install, you'll be addressing a lot of issues which may actually help prevent some high-mileage problems.  My engine had over 100,000 miles on it when I installed the the cam - so far so good.  Use of premium oil does wonders.  Don't know what OldVMer's habits were, but I've used for the past 150,000+ miles redline synthetic 5w30.  Make up for the cost of it by changing it when the engine tells me it needs it instead of some worst-case dino oil established interval from decades ago.

Don't forget that if you do anything beyond very mild, you will need a custom tune, if for nothing else to kick up your idle speed.  I've currently got mine set at a minimum of 705 rpm.  Stock for my 03 it was 550.

ok, more good info.
OldVMer is one of those 3k oil change peeps and does all other maintainence as the book calls for. Don't know what oil he used.
I know there's some things I can change with my Predator including idle speed if it comes down to that, however, I'm sure that whenever I do get the itch and the money to do this, I'll dump the Pred and go with HP Tuners and start a night course in studying that on the boards.

[Main One]

MBT - regarding your question on how high you can shift our engines, I'm shifting at 6100 rpm now.  Was shifting at 6200, but started getting some lifter tick.  Backed it off to 6100 and the tick went away.  As you probably know, people on performancetrucks.net speak of going as high as 7000.  (They don't seem to mind the lifter tick - I find it quite annoying.)  Besides the engine though, the 4l60e is only rated to 6000 rpm, although I know you've made some improvements to yours.  Ignoring the tranny issues though, you could do as FlaBouy did and put in lifters that can take the higher rpms.

[MyBigToy]

Here's a pretty good article that explains camshafts:

http://www.popularhotrodding.com/enginemasters/articles/hardcore/0606em_camshaft_specs/index.html

[MyBigToy]

MBT - regarding your question on how high you can shift our engines, I'm shifting at 6100 rpm now.  Was shifting at 6200, but started getting some lifter tick.  Backed it off to 6100 and the tick went away.  As you probably know, people on performancetrucks.net speak of going as high as 7000.  (They don't seem to mind the lifter tick - I find it quite annoying.)  Besides the engine though, the 4l60e is only rated to 6000 rpm, although I know you've made some improvements to yours.  Ignoring the tranny issues though, you could do as FlaBouy did and put in lifters that can take the higher rpms.

I agree with you - I hate lifter ticking. So where does it ever end? Camshaft, pushrods, springs, now I need to do lifters too.    The next thing will be heads!  I don't think so.

[Main One]

I agree with you - I hate lifter ticking. So where does it ever end? Camshaft, pushrods, springs, now I need to do lifters too.    The next thing will be heads!  I don't think so.

If you're like Bob, it ends when you get another hobby or two to spend money and time on!

I'm not going to pull my heads in order to install lifters to get only another 100 or so rpm without lifter tick.  However, I am contemplating heads, and if I do pull the trigger on them, I'll probably do the lifters too.

[MyBigToy]

If you're like Bob, it ends when you get another hobby or two to spend money and time on!

I've already got too many hobbies (lake house & farm in addition to my house) to spend money on. It's really tough to keep up with 3 places, especially when one of them is 150+ acres. I need to spend a lot more time at the farm to get it the way I want it but somehow a woman always gets in the way - you know how wives are! 

[Main One]

but somehow a woman always gets in the way - you know how wives are! 

You are sounding more and more like Bob!

[MyBigToy]

OK, next question. I've continued to do a ton of reading/research and have seen indications that the 4.8/5.3 LS-based truck intakes don't benefit a whole lot from a cam lift of more than 0.550". Higher lift is harder on the valve springs so is it really worth it to go higher? I've not been able to find any comparisons on hp/torque with different lifts in the same engine. I don't think that an additional 10 hp (which is the general number I saw thrown around) is worth putting a lot more stress on the springs. So let's hear some thoughts/experience on this.

[Main One]

the 4.8/5.3 LS-based truck intakes don't benefit a whole lot from a cam lift of more than 0.050".

Are you sure you meant 0.050"???

[MyBigToy]

Are you sure you meant 0.050"???

0.050" - what 0.050"? 
















How about .550"?  

[Main One]

Well, your buddy FlaBouy has noted that it isn't so much an issue with the engines or intakes, as it is with the stock heads.  He's posted data, which I've seen elsewhere as well, that indeed shows there is nothing to be gained flow bench-wise with more lift than about 0.55".  He doesn't think in my case anyway that using higher-ratio rocker arms would add much if anything to my setup which has 0.551" max lift with the stock rocker arms and heads.

If you are going to stick with stock heads, I would agree that lift beyond 0.55" isn't buying you much, and as you note, does put additional stresses on parts.

Edit - you may want to consider however that you aren't just concerned with peak flow, but total flow "under the curve".  While peaking above 0.55" itself isn't going to get you anything, you will be seeing more off-peak lift at areas where a 0.55" peak lift is under 0.55", but the higher peaking lift is at or above 0.55".  One of us should "test" FlaBouy's position on this.   

[MyBigToy]

DanV on CAFCNA just sold his Av and has posted quite a bit of stuff over there. I got lucky enough to be in the right place at the right time and currently have first dibs on the setup. It's the same cam that Main One is running, plus PRC dual springs, titanium retainers, hardened spring seats, and hardened pushrods. I'm waiting to hear back from Dan but I'm pretty sure I'm going to buy the setup. It's going to get interesting with this setup and a 3.25" pulley, once I get the tuning right!

[bluedevil]

DanV on CAFCNA just sold his Av and has posted quite a bit of stuff over there. I got lucky enough to be in the right place at the right time and currently have first dibs on the setup. It's the same cam that Main One is running, plus PRC dual springs, titanium retainers, hardened spring seats, and hardened pushrods. I'm waiting to hear back from Dan but I'm pretty sure I'm going to buy the setup. It's going to get interesting with this setup and a 3.25" pulley, once I get the tuning right!

Lets get all setup for some test runs at Gateway this spring

[oHIobellboy]

I saw that post about 10 mins after he put it up.  Checkbook is way too light at the moment for all those goodies.

[MyBigToy]

DanV on CAFCNA just sold his Av and has posted quite a bit of stuff over there. I got lucky enough to be in the right place at the right time and currently have first dibs on the setup. It's the same cam that Main One is running, plus PRC dual springs, titanium retainers, hardened spring seats, and hardened pushrods. I'm waiting to hear back from Dan but I'm pretty sure I'm going to buy the setup. It's going to get interesting with this setup and a 3.25" pulley, once I get the tuning right!

We agreed on a price and I put the check in the mail this morning.     Hopefully I can get this installed before the end of the year.

[bluedevil]

Are you messing with this yourself?

[MyBigToy]

Are you messing with this yourself?

  I'm going to do a little calling around. I don't think I'm going to tackle it by myself but I may see if I can provide assistance while it's being done. Here's a good link that shows some basic cam info and instructions for a cam install on an F-body:

http://www.ls1howto.com/index.php?article=23

[Main One]

I'm going to do a little calling around. I don't think I'm going to tackle it by myself but I may see if I can provide assistance while it's being done. Here's a good link that shows some basic cam info and instructions for a cam install on an F-body:

http://www.ls1howto.com/index.php?article=23

Those are good instructions.  Was able to do mine with the help of those, and had never done anything like this before.

In our trucks, unlike the cars, you don't need to mess with the AC compressor.

I later changed my cam timing set - put in an adjustable one.  Getting the pickup tube screwed back into the oil pump was a MAJOR B!TCH for my fat fingers.  It took me hours.  One of my fingers had a numb spot on it for weeks due to how I had to manipulate it to get the screws started on that thing.

The GM book says if you are going to change the oil pump, to pull the oil pan completely off, not just loosen as those instructions say.  If I were doing this again on my 4x2 truck, that is what I would do.  Pulling the pan is a lot harder on the 4x4 trucks though as the front diff is in the way - you've got to remove that first.

If you don't pull off the oil pump, and have a good valve spring compressor, this isn't too bad of a job.  Definitely need to get a pipe to go with a breaker bar to get the crank bolt off, and later back on.  While you are doing this, you may want to pin your pulley - a popular thing to do for the SC crowd.

[MyBigToy]

While you are doing this, you may want to pin your pulley - a popular thing to do for the SC crowd.

That's a definite for me - I know I've heard the crank pulley spinning a few times and I don't have the 3.25" pulley on yet.

[OLD NO.7 Avalanche]

Hey guys, I put in the GT2-3 cam and lifters kit along with yellow springs . It wasn't too difficult (I'll try to post up some pics if I can).I dumped it in to an LQ9 6.0 and I've got the Maggie with the 2.80 pully (she sounds like a 747 going down the street). I havent had any complaints, any questions and I'll be happy to help #7

[MyBigToy]

Hey guys, I put in the GT2-3 cam and lifters kit along with yellow springs . It wasn't too difficult (I'll try to post up some pics if I can).I dumped it in to an LQ9 6.0 and I've got the Maggie with the 2.80 pully (she sounds like a 747 going down the street). I havent had any complaints, any questions and I'll be happy to help #7

I assume you've got the pulley size maxed out because you're running the MP112 on a 6.0 and are trying to get as much out of it as you can? What do your IATs look like with the 2.8" pulley? I'd think they would be really hot at the end of a run.

[KY_BOB]

I'd think they would be really hot at the end of a run.

ME TOO! 

[OLD NO.7 Avalanche]

I assume you've got the pulley size maxed out because you're running the MP112 on a 6.0 and are trying to get as much out of it as you can? What do your IATs look like with the 2.8" pulley? I'd think they would be really hot at the end of a run.

My IAT's are a little high (98deg to 115degs) but I have a solutition for that (sno stage 2 kit) I'm also on PT.net and the Silverado boys with the 6.0's are running it and it cools them down by like 20degs. The added bonus is that up here in New York the only time I gotta worry about the high heat is in the dead of summer,other than that she's good #7

I can actually get more outta my 6.0, but then I'm crossing the line from daily driver to track toy and lord knows that I've got enough of those