In article .com,
wrote:
The small block Chevy is still in production (as the GM corporate Gen
III V8) but there's nothing inherently better about the core engine
being produced today. Anyone who builds hot rod or racing engines
prefers the Gen I blocks, heads, cranks and rods over the new ones.
They do last longer in the stock application because EFI engines don't
dribble raw gas over the cylinder walls during shutdown, and because
oils and filters have improved. But with modern closed loop EFI and a
catalyst just about any old engine would meet today's emissions
standards.

Why is dribbling raw gas on the cylinder wall such a bad thing? Other
than that it might wind up past the rings and diluting the oil. It's
not like gasoline is that corrosive.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."