2 or 4 bolt - The 1947 - Present Chevrolet & GMC Truck Message Board Network

derrickc · 10-29-2007, 10:39 PM

I have a 350, how do I know if its 2 or 4 bolt main

bigblock73 · 10-29-2007, 11:37 PM

Drop the oil pan and count, or run the casting numbers at mortec.com

**Captkaos** · 11-01-2007, 12:14 PM

Quote:

Originally Posted by bigblock73

...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.

87 STEPPER · 11-03-2007, 09:54 AM

Here ya go.

2 bolt bare block
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4 bolt bare block
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10-29-2007, 10:39 PM	#1
derrickc Registered User Join Date: Oct 2007 Location: Newfoundland, Canada Posts: 51	2 or 4 bolt I have a 350, how do I know if its 2 or 4 bolt main __________________ NOTA8FAN , still like to see him do good, well not this year

10-29-2007, 11:37 PM	#2
bigblock73 yeller Join Date: Oct 2001 Location: Twin Cities Posts: 13,824	Re: 2 or 4 bolt Drop the oil pan and count, or run the casting numbers at mortec.com __________________ Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale

11-03-2007, 09:54 AM	#4
87 STEPPER STILL PLAYS WITH TRUX Join Date: Nov 2002 Location: Melbourne, Fla. Posts: 2,764	Re: 2 or 4 bolt Here ya go. 2 bolt bare block 4 bolt bare block __________________ ~~Bruce~~ MY 87 STEPPER MY 99 2D/WD TAHOE



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