Good information to know. I'll have to peruse the webpage which showed the flowrates on the L92 heads to determine if ~500RWHP is capable if I keep the lift under 0.500

I'm surprised and dismayed that a cam would cost that much money... where'd the after market go on this?
So what your saying is that Morel makes the only lifters that function in an LS2 and everything else will fail under race/normal use in a 500 horse build?

As far as headers, stepped is overkill, there is a ton of room, cutting the flanges off of some manifolds and having a local muffler shop make me some 2" primary to 4" collector headers for $300 is something I've had them jump at before, especially in a truck where there's plenty of room on either side.



What I do want however is some questions answered.
A. I could probably do this on the cheap if I could find a wrecked silverado or whatever that has an LS2/L92, put in a different cam and headers and it would do the job.

B. is there a better option out there for the money?... I want longevity (engine must last 50k+) power (500+ RWHP), cost (less than $5,000 all said and done), (PCM needs to be capable of DoD/MDS ( I want to get the mpg out of this thing as well), boltup to an M6, and I'm going to have to retro-fit this into an '87 1/2-ton chevy shortbed pickup

C. what are the options out there for the computer? MDS/DoD is a must-have on this build.

To clafiry:
A. is it possible that a stock LS2 longblock with a cam change, headers, and a tune can put forth decent numbers 500+ at the flywheel and not grenade after 10k miles?

B. Obviously LSX is another $1k, it seems as thought he LS1 has aftermarket heads that can produce this kind of power, but they are a lot more costly than $2k for ready to bolt-on L92's and intake of the aforementioned abilities.

C. any options out there for a PCM other than just using a stock one out of one of the aforementioned vehicles and having it tuned?

 

Of course not. All you would have to do is put some Patriot Gold springs rated for .650 lift on them and then run a big cam.

They've always been expensive.
Here's a list of cams from Thunder Racing and Futral Motorsports to get an idea:

http://www.thunderracing.com/catalog...&vid=3&pcid=51
http://futralmotorsports.com/fms_par....asp?pf=1&pg=5

Morel makes the only quality lifters for these cars.
http://www.thunderracing.com/catalog...id=107&sid=608

Nobody said anything about stepped. I just said some good quality 1-7/8" primaries If you can find someone to fab some up, then more power to ya


Definetly.

500 horsepower at the flywheel and 500rwhp is two different animals. 500 at the rear wheel is around 600 horsepower at the crank.

A cam change / exhaust / headers /bolt-ons is really all you'll need to get around 500 flywheel horsepower on an LS2 (around 430-440rwhp).

The LS6s are as good as nearly anything else out there when ported correctly. (Futral went 9.9s @ 137 with stock cubes and a 6-speed)

There's always the $2000 aftermarket systems that I'm sure you won't want to deal with.

Seems as though you're on a serious budget. I'd just carb the thing and call it a day

 

I was really hoping to get away from the carbs, as much as I enjoy holley's, I grow weary of jet changing due to altitude for trips, and the wear and tear they get from engine compartment heat and just time and use.
Besides, tuning one "properly" requires about 10 hours worth of work by itself unless you have a dyno, and then probably 1-2. And by properly I mean dead-on for everything.
Getting someone to build a set of headers is a simple and cheap task where I am, definitely not-so for people who live in larger cities where muffler shops can get away with murder.

I think I'll price it out again based on stripping a block out of a wreck and see what it comes out too, and if the HP and drive ability is good enough you'll be hearing about this one later I suppose.