So your talking .125” wide and .125” deep?
The actual angle of that chamfer could change that CC volume greatly as that angle is what sets the depth and width of that chamfer.
By my math a chamfer of .125” by .125” on a 4.210” bore would add 1.638 CCs.
That would not change the compression ratio by much at all which would make me question why the factory would pay for a added machining step for what amounts to no effect at all.
With a 4.150” bore it takes a 4 Cc change to produce a 1/4 point change in compression.
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Last edited by 25stevem; 09-18-2022 at 09:33 AM.
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