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454 4 bolt a mag motor

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Old 10-05-2006 | 11:12 PM
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Default 454 4 bolt a mag motor

is the only difference between a mag and a non mag motor a 4 bolt main set up? I just brought the new boat home and the stock motor was just put in for the summer. i ran the 3's of the block and it came back a 4 bolt main. does this mean it is a mag or are there other things that could determine it too?
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Old 10-06-2006 | 07:39 AM
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Default Re: 454 4 bolt a mag motor

The Mag has better crank, rods pistons and heads than the non mag.

What does "I ran the 3's of the block" mean?
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Old 10-06-2006 | 08:42 AM
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Default Re: 454 4 bolt a mag motor

Originally Posted by Payton
The Mag has better crank, rods pistons and heads than the non mag.

What does "I ran the 3's of the block" mean?
I think he meant the "#'s" and didn't hit the shift key......
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Old 10-06-2006 | 09:33 AM
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Default Re: 454 4 bolt a mag motor

I believe that all Gen V and Gen VI (1990 and newer) 454s have 4 blot mains.
The Mag/HO has forged internals vs. casts in the low out put engine.
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Old 10-06-2006 | 04:35 PM
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Default Re: 454 4 bolt a mag motor

The 365hp 454 mag are like a 70 Chevelle LS6 motor minus the cam and compression.I ran a 365 mag blown at 760hp for 3 seasons.no probs
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Old 10-06-2006 | 06:27 PM
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Default Re: 454 4 bolt a mag motor

what drive are u running? what else is in your combo?
thanks
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