HT4100 4.1, 4.5, 4.9 Discussion, 1989 4.5L overboring in Cadillac Engine Discussion; I've read about these 4.5L single point engines having modular cylinder sleeves. I can't imagine what they're talking about. Maybe ...
- 12-15-12 09:06 PM #1Cadillac Owners Member
- Automobile(s): 89 Seville
- Join Date
- Dec 2012
1989 4.5L overboring
I've read about these 4.5L single point engines having modular cylinder sleeves. I can't imagine what they're talking about. Maybe it's something like the wet sleeve insert. I was wondering how far I could overbore and what type of displacement I could realistically shoot for.
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