Currently finishing up a 2005 lq9 with prc ported 243 heads, ms3 cam, vengeance ported 102, nick William's 92mm throttle body, ftp102mm air lid, 20% UD pulley, and cometic gaskets to bump compression to 11.5.

my question is what exhaust would you run with, and is it attainable to try and shoot for 470 wheel? If not, what's the max I'm looking at as far as rwhp goes?


I'm very interested in the speed engineering long tubes and true duals.. but open to real world tested ideas. Thanks

 

Long tubes and true duals, by far.

If everything is perfect and it's a 6 speed it should get close to 500, or over if it's really optimized.. I think 470 is a reasonable expectation.

Edit: I hate to shoot high and build up expectations. To be honest. If your car is setup well I don't see why it wont do 500.

Also read through this. This car has speed engineering long tubes and duals. Did 450 with less than you got and through a stalled auto.
https://ls1tech.com/forums/generatio...f-trailer.html

 

I sure hope you're right. Itll temporarily be through a 60e, stalled.

 

Autos don't help and stalls don't either. If you make **** dyno numbers you should still put up nice 1/4 numbers. Should be a high 10 sec or very low 11 sec car but depends on a lot of things.