I dynoed the car today at a shop in FLorida. about as sea level as your gona get. Car made 403.3 HP on the Second pull. 403.2 on the 3rd pull.

Im wondering if I could gain any HP buy changing the exhaust around a little. I have Hooker LT's with Mufflex Y reduced to 3 inch. I have a bent I pipe to connect to the Hooker Cat back. Maybe I need to change the muffler to a offset in center out, or center in center in muffler to get a better flow. Or maybe the same muffler in a 4 inch pipe instead.

Injectors are SVO # 42. I may change them to 36's or so and increase the fuel 3-5% with programming. Air Fuel ratio showed car running on the lean side.

Im happy to be in the 400 HP CLUB! I want 430 or so though.

 

What kind of cam/heads?

 

I'd try a cutout before getting a whole new exhaust.

 

Comp 236 242 112LSA
AFR 210 Comp Ported

 

Yea with those heads Id expect alot more than that..Im dynoing that w/o tuning and 30# injectors..

Cody

 

That cam doesn't seem to make much power in any engine, I have no idea why, it has great mid range but just dones't give you those peak numbers. get a custom cam or a GM847

 

Get a custom cam.

 

Headders are comming out for repair work and re coating.
The I pipe that connect to the Y-pipe suck so I want to replace it with something better. I also want a stright threw muffler. Im just not sure if I should run 4 inch or 3inch pipe over the axel.

 

would a 4 inch I pipe and muffler be over kill?

 

just do true duals...problem solved...

 

Nice numbers.

 

Yea I must say every post I see with dyno #'s that involve that cam have terrible #'s. I bet going to a GM847 or custom cam would bring you up to 430+rwhp atleast with heads like those in a 383. JMO

 

Some how i expected more from a Stroker

 

What does the torque look like?

 

Do true duals!