Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Better core block for sbc 383, 4-bolt flat or 2-bolt roller?
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Old 02-06-2008, 07:10 AM
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Quote:
Originally Posted by curtis73
Swapping a roller cam into an old block costs a lot. Machining a 2-bolt block for 4-bolt caps is cheap. Not to mention a 2-bolt block will take a good bit of abuse. I'm running a 2-bolt right around 430 hp and I don't worry a bit about it. 116k miles with no issues.

Roller cams are super nice, but retrofitting one is expensive and not worth it. Go with the roller block. If you need 4-bolt mains, have it machined.
Tell the guy in the link I posted its not worth it!!

And I wish I could base all my info on one block that has gone 116K miles with no issues.

Why the hell did GM even build a 4 bolt main block

Here is a another good link.
http://www.chevelles.com/forums/showthread.php?t=38173
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