Common Pontiac Displacements and Overbore Displacements Pontiac 400

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Common Pontiac Displacements and Overbore Displacements.

400

	inches	metric
bore	4.1212"
stroke	3.75"
overbore	0	0
disp/cyl	50.023 cid	819.72 cc's
displacement	400.18	6.557 litres
new bore size	N/A

400 bored .030 over

	inches	metric
bore	4.1212"
stroke	3.75"
overbore	0.030
disp/cyl	50.75 cid	824.43 cc's
displacement	406.03	6.595 litres
new bore size	4.1512"

400 bored .060" over

	inches	metric
bore	4.1212"
stroke	3.75
overbore	0.060
disp/cyl	51.49 cid	829.15 cc's
displacement	411.92 cid	6.633 litres
new bore size	4.1812"

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