454 2bolt 289 block or 4bolt 454 1 piece seal to build a 496 - Hot Rod Forum : Hotrodders Bulletin Board
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Old 12-21-2008, 07:25 AM
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454 2bolt 289 block or 4bolt 454 1 piece seal to build a 496

I have a 454 289 block 2bolt I know where there is a 454 4 bolt 1 piece seal long block I can get for $250. Which block would be better for a 496 build 10:1 compression 850 Barry Grant ported 049 heads 6500 rpm max going in a g body olds.

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Old 12-21-2008, 10:15 AM
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Either one will work. The early block is plenty strong for a street motor. Sheet metal is easier to get for the early block. If you are worried about the two bolt mains.Don't.. If you must. Just install aftermkt studs and built that thing..

My shop builds plenty of the 4.25stroke street/drag motors and most are two bolt.
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Old 12-21-2008, 10:22 AM
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I'll second Bob. Our race truck has a 496 that makes enough steam to run 6.0 in the 1/8th and it's a two bolt main block.


Larry
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