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Old 01-14-2013, 10:48 PM
prostcelica prostcelica is offline
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383 on pump gas

Hey guys

Me and my brother are building a 66 acadian. We just picked up a sbc 383 from a freind of a friend. The guy we bought it from didnt know alot about it so i pulled the heads of to check piston to deck height and do a little clean up on the heads. Im wondering if we are going to be able to run this thing on 91 octane. Im getting 10.95:1 with a dynamic of 8.43:1

SBC 350 40 over
Scat 3.75 crank
speed pro flat tops (5cc)
Felpro head gasket 4.166 bore/.041 comp thick
Piston 5 thou in the hole
Colt custom ground cam 234@50(didnt come with a cam card and I haven't degreed it yet so I used Intake colsing point from this camhttp://www.compcams.com/Company/CC/cam-specs/Details.aspx?csid=190&sb=2
Edelbrock performer RPM heads (64cc)
Air Gap intake
750 double pumper
hooker long tube
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