Thanks Dave!
I'll measure the diameter - I did know that the CMP 216 motors had dome top pistons, and I think our '46 truck had flat top aluminium pistons.
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					Originally Posted by motto  You should have no trouble in identifying that piston Keith, 216 Chev.If your eyeball is not calibrated and the diameter is in fact 3-9/16" it is 235 Chev.
 
 Dave
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