Summit Racing offers a LS1 to LS6 conversion kit for about $2200.
It includes heads, cam, intake manifold (pre-2001? ), gaskets, bolts, etc... The part# they use is NAL-GMP699.

My question is, do other vendors offer a complete kit like this?
I looked at gmpartsdirect, but couldn't find anything other than the individual components.

 

Pace Performance. http://www.paceparts.com/index.asp?P...D&ProdID=13913
Why do all that work for stock Z06 hp? Go with a good h/c setup and you'll be making much better hp. If you find a good set '02 Z06 heads, you can get close to 400rwhp. FWIW, think about a good set of LT's also.

 

For every aftermarket set of heads, there seems to be a long list of threads about problems associated with them. An upgrade from 345 to 405 hp with stock drivability and reliability is very attractive to me. The price seems reasonable for +60hp on factory parts, I was just curious if one of the forum vendors offered a similar package.

It's not just about the HP. ( did I say that ) I could get a 100 shot NOS system for a lot less.

 

Yes, although I don't think it's worth the time/money. If your going to do it do it right -- get a decent aftermarket cam and worked over heads.

Mark

 

Excellent point centaurian! However a set of used Z06 heads are not aftermarket. If you want new, buy new LS6 heads. I was just suggesting that for the same money and work, you could add a bigger cam, get more hp, and still have it as drivable as stock. A 224R 114lsa is pretty stealthy, emissions compliant, and will put around 30 more hp than the stock LS6 cam under the hood. And you know NOS breaks stuff... FWIW, I am at 420 crank hp, with a 99 LS1 with Vararam, ported tb, LS6 intake manifold, LT headers, and exhaust. It's just as streetable as stock and I didn't have to go into the motor...yet...

 

I think I see your point ( you too ArKay99 ).

You both think I could shop around and get more HP with better components ( a FAST intake for example ) for the same $$$$.

Thanks

Dave

 

If you shop around you could probably do it cheaper if you don't mind used parts. My heads, cam, and headers only cost me 2k and it put me over the 400 rwhp mark and I drive it everyday. I have not had any issues with my set up. It even gave me better gas mileage. Kaley

 

If you want GM components, they have their own "aftermarket" Z06 heads CNC ported and polished by LPE (GM part 88958622). These will cost you around $2000 plus installation. The GM Hot Cam (part 12480033) goes for around $400. That GM H/C package gets you beyond Z06 performance and you're all GM at just slightly more that the LS6 upgrade poackage.

I'm planning to go AFR with a small cam to get my 400+ RWHP Best,

mtv

 

This really just comes down to what you want out of the car and how much money you are willing to spend. If I were doing a H/C type swap I would probably just do a mild cam and headers and skip the heads. Heads really aren't very good, generally speaking, in the bang for the buck department. After researching H/C packages for quite a while I decided on a blower instead.

Good luck,

Mark

 

Ok, here comes the stupid question: Has anyone in this forum ever installed the GM Hot Cam setup on a Corvette LS1 with factory LS1 heads? Updated: It seems like a decent duration and has a 112 LSA plus it includes 16 Z06 springs.
Duration:219° 228°
Lift:525" .525"
LSA: 112°

 

Anyone?

 

Anyone...Anyone...Anyone?

 

I am thinking of selling the heads you are talking about. They are designed to run a smaller cam for some type of racing class. I want to run a set of AFR's and a big cam. These heads and that cam LS1 hot came, would make a great street package due to the small duration (219 @ 50) and the compression (11.2 to 1)
IM me if your interested.
thanks
J
cyclerage23@yahoo.com

 

The GM LS1 HOT cam profile with its wimpy 0.525" lift is a little goofy in my opinion. Since the stock LS6 cam has around 0.550" lift; there's no reason to change to a cam with any less lift than that. . . Again, just my opinion. . .

 

After reading what you stated as what you want to do with your car, I have this suggestion. Go to Thunder Racing. Purchase a TR224R cam on a 114lsa, Comp 918 springs JWIS timing chain, ported oil pump, and ASP UD pulley, and Moly pushrods. Don't change your heads. Just the cam. Buy a good set of LT headers and a good intake, VaraRam, Haltech, etc. If you don't have a good aftermarket exhaust, look for a set of Zo6 titaniums. Put all that stuff in and on, get your car tuned by a good tuner, and enjoy about 370 rwhp. You will then probably have to start considering a new Stage 2 clutch/Flywheel. You will need that if you upgrade to the LS6 stuff too. The stock clutch isn't really worth more than about 380-390 crank hp. Just my $.02

 

I am also interested in staying all GM. The hot cam and ported 06 heads they offer sound like a good package but I cannot find anyone with any experience with it. I want torque at low RPM not just high HP at some RPM that I will hardly ever get to on the street. I like the pin your back into the seat feel and keeping the R’s under 4K

 

Thanks for the info. The first thing I did before considering cam/head/header changes was install T1 exhaust and a Granatelli Super Ram Cold Air kit (not that wimpy tri-y filter crap). I had Vararam on my 2003 Coupe and was a great seat of the pants modification but I didn't like the low-cost look (my opinion). It also raised a big red flag at the dealership when I was having problems covered under warranty. I have been leaning toward the TR224/114LSA cam and I have seen a few threads stating that it passes smog. I would really like to hear one of the cams mentioned in this thread so I can make a decision. I have built at least 30 engines over the past 30 years and I am not interested in bent pushrods, broken valves, temperamental fuel distribution (or starvation) problems, noisy/leaky exhaust headers/collectors or high maintenance tuning requirements. I know there is a happy medium somewhere but I don't know enough about these LS1 engines to feel comfortable enough on a cam/head/header combination that will still provide a dependable driver. If it was a smallblock chevy engine, I would know exactly what to build. But with smog requirements and the unique needs of this LS1, I don't want to make an expensive mistake. I only do things once - the right way - based on experience and as much information possible.

 

I running a set of the GMPP LS6 heads and LPE GT2-3 cam. You will need comp 918's or better with this setup.Other mods are Blackwing, LS6 MAF, ported throttle body, LS6 intake, LPE longtube headers, stock CAT's, Bassani X pipe and Zo6 Ti. mufflers. 403RWHP/381 TQ on a Vette Drs. install and tune. Very stealthy and a stock idle. It's all what your looking for. Some guys are getting that on cam only, and stock LS6 heads. Granted it's a BIG cam. BTW you can't use springs that require the heads to be machined to accept them. There's not enough material left after porting them.

 

What kind of power are you getting with the GM heads and Hot Cam? Does the power come on strong down low RPM?? I am interested in this set up if I can get some solid information

 

I have to disagree, somewhat. I had the GMPP LS1 Hot Cam in my Z28 with TPIS Long Tube headers and it put down 390RWHP with stock heads and LS6 intake. That's making 440+ crank HP with LS1, not LS6 heads.


So, while the Hot Cam does sound choppy at idle, and runs a little rich (which is mostly because of the Long Tubes) it's a great cam, it's 0.525" lift notwithstanding. Not to mention it passed emissions without catalysts.