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John Stone · 05-06-2019, 08:58 AM

Just came up with a B engine. I rebuilt it about 5 years ago and ended buying it from the estate auction.

Now the question: Is it possible to use smaller nuts (5/8 rather than 21/32 or 11/16) on the rods to clear the sides of an A pan. The relief on the B pan isn't much. I have been measuring the gain in clearance and believe using the smaller nuts I get about .1" versus the 11/16.

I know there is mods required where the pan meets the rear main cap.

05-06-2019, 08:58 AM	#1
John Stone Senior Member Join Date: May 2010 Location: Wichita, Kansas Posts: 710	A pan on a B engine Just came up with a B engine. I rebuilt it about 5 years ago and ended buying it from the estate auction. Now the question: Is it possible to use smaller nuts (5/8 rather than 21/32 or 11/16) on the rods to clear the sides of an A pan. The relief on the B pan isn't much. I have been measuring the gain in clearance and believe using the smaller nuts I get about .1" versus the 11/16. I know there is mods required where the pan meets the rear main cap.