Why the overbore from 396 to 402 - The Supercar Registry

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Why the overbore from 396 to 402

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10-23-2003, 12:37 AM

70-SS/RS-L78 70-SS/RS-L78 is offline

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Why the overbore from 396 to 402

Can anyone explain GMís decision to overbore the 396 032 in 1970 to make
it a 402? And did they use the same casting or did they thicken/widen the cylinder
walls to compensate for the larger bore? [img]/ubbthreads/images/graemlins/dunno.gif[/img]

Thanks
Mark

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