help with comprssion
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Joined: Jul 2005
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From: ct
Car: trans am
Engine: sbc350, afr 180cc head, comp full roller, xtrem 276,comp 1.6 roller rockers,weiand142
Transmission: tremec tko
Axle/Gears: 8.5 3.73 gear, moser 30 spline axles,eaton posi
help with comprssion
i have a 350 sbc with 9.1-1 compression with 64cc heads. if i changed to 74cc heads, can anyone out there tell me where my new compression might fall? i am using a regulars head gaskets and nothing is getting done to the block itself.(decked,whatnot) i know there might be more info needed so fire away
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From: Brighton, CO
Car: '72 Chevy Nova
Engine: Solid roller 355
Transmission: TH350
Axle/Gears: 8.5" 10-bolt 3.73 Posi
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Car: 1988 Firebird S/E
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If your compression ratio is 9:1 now with 64cc heads.
Changing the heads to 74cc will drop the cr to 8.2:1
Changing the heads to 74cc will drop the cr to 8.2:1
Thread Starter
Junior Member
Joined: Jul 2005
Posts: 75
Likes: 0
From: ct
Car: trans am
Engine: sbc350, afr 180cc head, comp full roller, xtrem 276,comp 1.6 roller rockers,weiand142
Transmission: tremec tko
Axle/Gears: 8.5 3.73 gear, moser 30 spline axles,eaton posi
thank you for the quick reply.. you guys are the best
Thread Starter
Junior Member
Joined: Jul 2005
Posts: 75
Likes: 0
From: ct
Car: trans am
Engine: sbc350, afr 180cc head, comp full roller, xtrem 276,comp 1.6 roller rockers,weiand142
Transmission: tremec tko
Axle/Gears: 8.5 3.73 gear, moser 30 spline axles,eaton posi
that is exactly what i am putting on. i decieded to go with the afr's and it only took 11 weeks to get them. it was a long wait, but by the looks of them i should be happy.
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