ok not just a ls1 that they got from a regular f-body or vette or gto but im talking about one of the high peformance ls1 engines in one of the GMMG cars. im not experienced with them but im assuming to make an good 100+ extra hp theres gonna be something done to the engine. so please post if you have one of these in your thirdgen thanks!

 

The GMMG cars were good performers for their time but now they aren't much. Stage 1 cars are just bolt on cars. Stage 2 are heads and cam cars. Stage 3 was a built 427 C5R block setup. New casting heads and such that are available now can make a MUCH better performing car. Plus everyone thinks that parts made by GMMG are worth gold. They really aren't. Your money is better spent elsewhere.

 

I've got a pretty healthy LS block in mine. It should put down around 440-450rwhp on a DynoJet (put down 365rwhp on a Mustang dyno). You don't have to spend a fortune on a brand new crate motor to get a lot of power out of these blocks.

 

What they said. My cam only LQ9 should be about 390rwhp give or take with the XER281HR cam and all the bolt-ons.

 

Thunder Racing just did a stroked LS1 that put down about 537 rwhp. Spend some time in the dyno subsection of www.ls1tech.com