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Old 03-30-2024, 12:22 AM
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performerrpm performerrpm is offline
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Join Date: Jul 2007
Location: oklahoma
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Default blown 434 with e85

for the guys running e85, ive read you need around 10..1 cr to make use of it with a blower. what would you guys thinks better, i ask because this would be a deciding factor of which heads to use. the bottom end is a forged 4 inch crank/studded 400 block, bme rods and icon 10cc dish pistons. i plan to have .060 piston to head clearence, so with speedmaster 78cc head i would be at 9.75cr, or i could use the 96cc eheads which would put me around 8.5ish which is better higher cr and lower boost or more boost and lower cr? i was either gonna throw an xr288 cam in it because i own it already but i might get a lil wider lsa cam. i dont know that i should spin this thing much passed the 6500 mark, in which case i think a hr cam would be fine?


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