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Common Pontiac Displacements and Overbore Displacements.


inches metric
bore 3.8762"
stroke 3.75"
overbore 0 0
disp/cyl 44.25 cid 725.16 cc's
displacement 354.02 5.8 litres
new bore size N/A

350 bored .030 over

inches metric
bore 3.8762"
stroke 3.75"
overbore 0.030
disp/cyl 44.94 cid 729.59 cc's
displacement 359.62 5.837 litres
new bore size 3.9"

301 bored .060" over

inches metric
bore 3.8762
stroke 3.75
overbore 0.060
disp/cyl 45.63 cid 734.02 cc's
displacement 365.06 5.872 litres
new bore size 3.962

Comments and Suggestions

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Feel free to drop me a note. * I am looking for some good articles for the third and fourth gen birds. If you have any that you would like to see on this site send them to me and I will post them on my site.     

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