[tc]

Wow. How do you and other's car's run so good. I know someone with a 455, xe284, unported d-ports, ran a 7.48 in the 1/8 mile. My car has run 7.63, and that is with a 1.73 60 ft. Guess I need to do more work. Some of your of parts are certainly not recommended on this board. Great job, hope it goes quicker. Looking forward to the video.

[65nss4spdGTO]

Originally Posted by tc

Wow. How do you and other's car's run so good. I know someone with a 455, xe284, unported d-ports, ran a 7.48 in the 1/8 mile. My car has run 7.63, and that is with a 1.73 60 ft. Guess I need to do more work. Some of your of parts are certainly not recommended on this board. Great job, hope it goes quicker. Looking forward to the video.

I set of unported 225CFM D-Ports can make 1 horsepower to cubic inch on a 455ci. That can push a 3600lb car into the 11's.

Calvin Hill
Hill Performance
708-250-7420

[Tom Vaught]

Originally Posted by 65nss4spdGTO

I set of unported 225CFM D-Ports can make 1 horsepower to cubic inch on a 455ci. That can push a 3600lb car into the 11's.

Calvin Hill
Hill Performance
708-250-7420

No factory D-Ports flow 225 cfm Stock. A set of "slightly warmed over" D-Ports can flow in the 240 cfm range (Jim Butler sold the things for years advertising that the heads would flow better than a stock RA-IV head, which they would). Butler's cast iron head porter was a master at doing those head ports exactly the same, over and over, year after year.

I agree totally that a 225 cfm head can make one hp to cubic inch on a 455 engine.

Congrats.

Tom Vaught