Two clearance questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Yukon Jack** · 04-15-2003, 09:18 AM

How much clearance should I have between my oil pan and the engine crossmember? It looked like the small block's crossmember would be fine with the big block but I see that the crossmember is awfully close to the bottom of the oil pan - probably between 1/16 and 1/8" of clearance.

Secondly, the passenger side (edited) header tube closest to the front of the engine has a possible clearance issue. The clearance from the bottom of that tube to the top of the engine crossmember is pretty tight. I've done some grinding removing some material from the crossmember and have about 1/16" of clearance. Do I need more than that?

04-15-2003, 09:18 AM	#1
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,684	Two clearance questions How much clearance should I have between my oil pan and the engine crossmember? It looked like the small block's crossmember would be fine with the big block but I see that the crossmember is awfully close to the bottom of the oil pan - probably between 1/16 and 1/8" of clearance. Secondly, the passenger side (edited) header tube closest to the front of the engine has a possible clearance issue. The clearance from the bottom of that tube to the top of the engine crossmember is pretty tight. I've done some grinding removing some material from the crossmember and have about 1/16" of clearance. Do I need more than that? __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 Last edited by Yukon Jack; 04-15-2003 at 11:30 AM.



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