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Old Apr 24, 2002 | 09:24 PM
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From: Porterfield
4 bolt main

 
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Old May 6, 2002 | 05:36 PM
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4 bolt main

would a 351 M in a 1979 F-150 have a 4 bolt main.
 
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Old May 6, 2002 | 06:05 PM
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From: Porterfield
4 bolt main

No the Only 351 that came stock with a 4 bolt Main was the 351C I think in 1970 and 1971.

All thought you can get the 4 bolt main caps and have them fitted to any 351C/M 400. But if I was going to go through all the trouble to have 4 bolt mains put in my motor I'd Adapt for the Splayed type.


 
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Old May 7, 2002 | 09:49 AM
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4 bolt main

I think only the BOSS blocks came with 4 bolt mains. But don't forget the Aussie cast blocks, of which at least SOME came with 4 bolt mains.
 
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Old May 7, 2002 | 10:22 AM
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4 bolt main

These motors don't really need 4 bolt mains unless your reving them really high. They are very strong with just 2 bolt mains.
 
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