Compression question?
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iTrader: (1)
Joined: Jul 2004
Posts: 10,763
Likes: 4
From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
here's a calculator
United Engine and Machine Co.
I think your stock deck height is .025"
I don't know what volume the stock pistons are. Usually aftermarket flat tops with 4 eyebrows are 5cc, but I think the stockers would have to be larger.
3.48" stroke
and whatever gasket you've used.
I was trying to do it for you, but I couldn't get the right CR to begin with, since I couldn't get the right piston volume in.... Anyway, you're looking at
~.7 of a CR point. Pretty big jump
United Engine and Machine Co.
I think your stock deck height is .025"
I don't know what volume the stock pistons are. Usually aftermarket flat tops with 4 eyebrows are 5cc, but I think the stockers would have to be larger.
3.48" stroke
and whatever gasket you've used.
I was trying to do it for you, but I couldn't get the right CR to begin with, since I couldn't get the right piston volume in.... Anyway, you're looking at
~.7 of a CR point. Pretty big jump
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