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Type: Posts; User: acepatt
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04-24-2007 02:41 PM
Thread: Building a 289
by acepatt- Replies
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heads options
Heads wise you limited to some research.
63-65 260/289 were the same cc chamber heads 54.5
allowing about 9 to 9.5 compression. ( for todays gas )
65-69 were also 54.5 heads but they started to... -
04-24-2007 02:29 PM
Thread: Building a 289
by acepatt- Replies
- 12
- Views
- 6,916
289 5 bolt build ok
Dont let people fool ya the 289 was a powerfull rock solid motor when built right.
First the five bolt block is a possible problem but if you have the c4 for it then no need to worry or change...
Could it be a 10114182? If so, it is a Gen V 454, 4 bolt 1991 (or later). Hope that helps..
GM Engine de-coding