Bore Notching
#6
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The GM factory did it on their 454 blocks...although it appeared to be kind of a crude machining type of fly-cut process, they must have still thought they had a good enough of a reason to make it worth doing.
#7
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Also consider whether the block was decked. If somebody shaved 020 to zero deck the pistons the rings are up that much higher. I would assemble and check where rings actually top out before notching...
#8
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Join Date: Jul 2012
Location: GPW Michigan
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The block has been decked .020 making the piston to deck zero. I will be using layout dye and making templates to keep each notch the same. I plan to stay .100/.125 from the top ring. The compression ratio calculators say I should be right around 10 / 1 so lowering it a bit will be just fine with me.
Thank you for the advice.
Thank you for the advice.
#9
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The block has been decked .020 making the piston to deck zero. I will be using layout dye and making templates to keep each notch the same. I plan to stay .100/.125 from the top ring. The compression ratio calculators say I should be right around 10 / 1 so lowering it a bit will be just fine with me.
Thank you for the advice.
Thank you for the advice.