1973 340 detuned?

jongdoe said

So if I was to put 1971 340 pistons in my 73 engine that would raise the compression to about 10.3 to 1 with my J heads with the 1.88 valves

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you would raise your compression...Yes..but it all depends on what the head cc are...head gasket thickness...and again...where the piston is in the bore....

best thing is fine a good set of pistons that are lighter then the stock thugs....

but it certainly be a step in the right direction....