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Forum: General Q & A

02-08-2016, 10:15 PM

Replies: 253

Iron VS Aluminum heads

Views: 56,672

Posted By BenPerfected

The AFR website says 315cc, we are slightly above...

The AFR website says 315cc, we are slightly above the AFR advertised port size. Things may have changed, but 10 yrs ago it was pretty easy to improve on the AFR exhaust port.

Forum: General Q & A

02-08-2016, 08:29 PM

Replies: 253

Iron VS Aluminum heads

Views: 56,672

Posted By BenPerfected

We make 780 HP with 500 CI NA on the dyno at 6800...

We make 780 HP with 500 CI NA on the dyno at 6800 HP with 15.5" exhaust. Same geometry as the old APBA Super Cat engine spec's but with about 9 to 1 CR to run on pump gas. The heads are the Dart Iron...

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