I agree with Clint. LS6 and L78 heads have 2.19in/1.88ex There was no hi perf head for LS6 and L78 that had 2.25 intakes. There are however some square port heads early (65-67) that had 2.19in/1.72ex. and the L89 aluminum had 2.19in/1.84ex.
Trooper ----- Original Message ----- From: "Clint Hooper" <[EMAIL PROTECTED]> To: "The Chevelle Mailing List" <[EMAIL PROTECTED]> Sent: Friday, March 19, 2004 4:08 PM Subject: Re: [Chevelle-list] I.D. chevelle heads > No stock oval port BBC head came with anything other than the 2.06/1.72 > valve combo. Almost all rectangular port BBC heads came with the 2.19/1.88 > combo. I would have to see some documentation of any production BBC > rect.port head with 2.25 intakes. > I had a pair of Bowtie alum. oval port heads w/2.25 intakes on my 68 Elky's > 468" but they were an over-the-counter part. > Clint Hooper > H&H Custom,owner > LT5 Registry Director > http://www.LT5Registry.net/ > ACES #1650 > http://dalesplace.com/misc/friends/clint_hooper.htm > ----- Original Message ----- > From: <[EMAIL PROTECTED]> > > > Low performance BBC heads have 2.065/1.725 valves, moderate ones have > 2.19/1.88 valves, and high performance ones (LS6, L78) used 2.25/1.88 I do > believe. > > Tom > >
