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Old 12/12/11, 03:49 PM
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5.4
Quick question do all 5.4 engines have a 4 bolt main?
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Old 12/12/11, 04:27 PM
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Not sure but it really doesn't matter that much either. The mains on these modular motors are not what is gonna fail first. Rods, crank, and pistons would be what I'm concerned with.
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Old 12/12/11, 04:45 PM
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Eh its a motor I'm building from scratch and I would like a 4 bolt
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Old 12/12/11, 05:23 PM
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Try 6bolt mains . All of them
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Old 12/12/11, 06:35 PM
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There all 6 bolt? Like 4 main cap screws then jack screws?
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Old 12/12/11, 06:40 PM
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Four bolts through the bottom of the caps then two through the side of the bottom of the block all modular motors are 6 bolt. V8-v10- and even the new 4 and 6 cylinders.
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Old 12/12/11, 06:46 PM
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Same thing GM does with their LS motors.
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Old 12/12/11, 06:49 PM
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Originally Posted by AlsCobra
Same thing GM does with their LS motors.
Yup!
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Old 12/12/11, 07:46 PM
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The 4.6 is only a 2 main cap with 2 jackscrews though
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