<< Also isn't there a better chance of blowing out head gaskets due to the
different expansion rates of the two metals....thus alot more "movement" of
the head gaskets?? >>
Well, in theory. But with the extra deck thickness of most modern aluminum
heads, proper torqing of the head bolts, and the use of a quality head
gasket, as long as the engine is not overheated, that usually isn't a factor.
Buy the time you would heat up an aluminum head enough to warp so much that
the gasket couldn't handle it, you'd probably crack an iron head anyway.
Whenever you rebuild a set of heads that have seen more than a few miles, a
small amount of milling of the deck is usually all that's required to smooth
out any minor warpage that may have occurred.
Scott
'94 Dakota 318 - 15.24 @ 89
'68 Camaro 355 - 12.02 @ 112
McKennaRacing.com
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 11:47:54 EDT