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BigBlocksRule · 12-12-2011, 09:20 AM

^ correct, unless somebody bought an aftermarket with the extra weight on the inside...rare, but it's happened. If you see the offset/cutout, it's either a 400 or a 383.
Good luck, hope it's a 400, they can be beasts!

12-12-2011, 09:20 AM	#5
BigBlocksRule Registered User Join Date: Jun 2008 Location: Lubbock, TX Posts: 2,047	Re: 86 chevy 4x4 400 engine ^ correct, unless somebody bought an aftermarket with the extra weight on the inside...rare, but it's happened. If you see the offset/cutout, it's either a 400 or a 383. Good luck, hope it's a 400, they can be beasts!