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Old 10-29-2007, 10:39 PM   #1
derrickc
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2 or 4 bolt

I have a 350, how do I know if its 2 or 4 bolt main
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Old 10-29-2007, 11:37 PM   #2
bigblock73
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Re: 2 or 4 bolt

Drop the oil pan and count, or run the casting numbers at mortec.com
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Old 11-01-2007, 12:14 PM   #3
Captkaos
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Re: 2 or 4 bolt

Quote:
Originally Posted by bigblock73 View Post
...or run the casting numbers at mortec.com
This won't help if the casting number could be either, which means back to option 1, pull the pan. For stock vehicles or street/strip vehicles 2 bolts are all you need.
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Old 11-03-2007, 09:54 AM   #4
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Thumbs up Re: 2 or 4 bolt

Here ya go.

2 bolt bare block
Name:  10051181b2[1].jpg
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4 bolt bare block
Name:  block_main_caps[1].jpg
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