green1
Well-Known Member
I have a 70 340, with domed pistons up .17, and j heads, 2.02 uncut. What is the actual compression? Everything factory. Unknown cam, seems .484 lift on both, [email protected]. Cranking 155 psi.
old 340
- Thread starter green1
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OMG!
OK, check it out, the compresion ratio is determined by alot more info given.
bore size, gasket bore and thickness size
Cylinder head cc amount.
Being you have popped up pistons, your going to have to figure out ethier swept volume or actual cc amount it'll take up in the head.
OK, check it out, the compresion ratio is determined by alot more info given.
bore size, gasket bore and thickness size
Cylinder head cc amount.
Being you have popped up pistons, your going to have to figure out ethier swept volume or actual cc amount it'll take up in the head.
green1
Well-Known Member
Standard bore, I think .039 (permatex blue) Heads never touched. Stock '70 pistons.
green1
Well-Known Member
It's a stock from the factory 1970 engine. Still can see cross-hatching, no ridge.
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