I had ET 2.055 heads that flowed about 309CFM @ .600 in my 01 Z06 with a 238/242 cam and it made 465rwhp/422rwtq with factory intake, TB, and fuel system as well as shortblock. You should hit 450rwhp i would think.

 

we'll see. Who are you?

I'll be happy with close to 450. What kind of dyno did you get those numbers with

 

Mustang Dyno 60 or so degrees at right around sea level.

 

i see no reason why not. that cam is a good size and those heads arent too shabby. on a dynojet with open cutout i think u should see that all day.

 

Sounds like the Mustang Dyno was calibrated to give a Dynojet number, or is otherwise "friendly". Even on a dynojet, those numbers are rather high for an LS6 manifold.

For the OP, I agree with what others have said about the Fast 90/92 being your path to 450rwhp.

 

Guess i'll just have to wait and see until I get it built and then put on the dyno when I get my tune

 

I got a dyno tune at Antivenom and put down 442/404 after getting the AFR right. I'm happy I came close to my goal of 450rwhp. I'll post a dyno sheet soon. Btw, Greg at AntiVenom is a great guy to deal with and knows his ****!!

 

nice man!

 

Here is the dyno graph:


click the thumbnail a larger image