CLASS RACER FORUM - GT 454 --- 781 or 236?

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Chipper Chapman

01-29-2012 11:32 PM

GT 454 --- 781 or 236?

What would be better combo in a heavy ride (37-3800#) 781 oval port combo @ 370hp or 236 'peanut' port @ 341hp?

Adger Smith

01-30-2012 09:56 AM

Re: GT 454 --- 781 or 236?

From the NHRA allowed SS cylinder head port vol chart (CC's)
236 head 225 in 116 ex
781 head 256 in 114 ex
Ok, will 31 more CC in the port increase the flow and make up for the 29 HP and the extra weight you will carry? You make the call!

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