AFR 205cc LS1 results

[firestone]

AFR 205cc CNC ported LS1 heads
1 3/4" long tube headers, 3" flowmaster exhaust
FAST intake
224/228 @.050 duration .581 lift cam
78mm ported TB
stock 346 short block and compression

530 hp @6500 RPM
475 TQ @ 4900 RPM

Thats 1.55 hp/cubic inch on stock compression, only being rapped to 6500 RPM with a streetable hydraulic roller cam.

Adam

[fastTa]

Who did your head porting? Pretty good numbers!

[firestone]

The porting is done at AFR. You buy the heads assembeled with the porting from them. I dont have that motor that I talked about, I got that info off the AFR website. The heads are not available to the public right now, they are still in a testing phase. you can find more info at www.airflowresearch.com. Those heads flow 301cfm @ .600 lift out of the box CNC ported from AFR, that is a 70cfm improvement over stock.

Adam