383 vs 440

Chipper Chapman · 07-22-2014, 03:18 AM

We follow the standard nhra/ihra rules. Using nhra hp factors and ihra indexes. The car has to be natural GT/EA (10.95) with 440 or SS/KA (11.55) with 383. And again I'm talking basically a stocker 3 ring bottom end with a solid cam and ported heads old school. This guy is chomping at the bit to get into s/ss but no way tossing 20k plus into an engine for his first real race car.

Larry we're looking at the 375 67 440 with the 9755 afb (750). Seems like the best balance of compression/induction for 440. Just that being a chevy guy those heads seem awful small for a 440+ cube engine

07-22-2014, 03:18 AM	#6
Chipper Chapman Member Join Date: Jan 2004 Location: Belmont N.S. Canada Posts: 473 Likes: 246 Liked 166 Times in 71 Posts	Re: 383 vs 440 We follow the standard nhra/ihra rules. Using nhra hp factors and ihra indexes. The car has to be natural GT/EA (10.95) with 440 or SS/KA (11.55) with 383. And again I'm talking basically a stocker 3 ring bottom end with a solid cam and ported heads old school. This guy is chomping at the bit to get into s/ss but no way tossing 20k plus into an engine for his first real race car. Larry we're looking at the 375 67 440 with the 9755 afb (750). Seems like the best balance of compression/induction for 440. Just that being a chevy guy those heads seem awful small for a 440+ cube engine __________________ Chris Chapman 1969 Chevelle NHRA F-G/SA 1090

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