ZL1 3946052 spotted today at Pomona Swap Meet

Home: Goto Homepage.
Subscribed: See all threads you’ve posted in or started.
Today's Posts: Posts made today. Bold = unread.
New Posts: Shows all unread posts since last visit.
New Thread: Newest threads by creation time.

**SuperNovaSS** · #1 02-04-2004, 05:39 AM

That is just what the machine shop told me. If it were me I'd run it this way anyway.

Jason

**rpoz11** · #2 02-04-2004, 05:33 PM

This will be my last post on this. Here is where Ill ask the who's who of this BOARD as well as any others in the know: Sleeve size : does the 4.250 sleeve have a different OD than any larger displacement sleeve to be used here, 4.440 or 4.500 & larger? I am guessing now, but if a larger sleeve is installed, would the aluminum core have to be machined to accept that larger OD if this is the case?

[the last time I saw this engine setup at Pomona, it was assembled as such in your attatchment above. I never saw the sleeves being different with the heads bolted on.]

RPZ28 · #3 02-05-2004, 04:34 AM

rpoz11
You are correct, sleeve od's are different. The blocks were the same when they were casted, but as you mentioned the aluminum cores were bored out alot bigger for the 4.440 application. The 4.250 ZL-1 could only be bored saftly to 4.300. Chevrolet made these blocks from 1969 to 1972. Hope this helps.
Ron

Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars.