Inliners International Forums General Discussion Engines boring out a 250

CNC-Dude,

Thanks for the information.

So to summarize the nominal minimum wall thickness range found for a stock Chevrolet 250 bore, would you state?:

US 250 Block: 0.170" to 0.190"

Mexican 250 Block: 0.200" to 0.230"


Leo Santucci states in his 'Power Manual', page 13:
"There seems to be no particular year or series that is structurally superior, although many racers favor the early years (1963-71), and others favor the Mexican-made block."