The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Package deal: BB, th400, 12 bolt posi...or ???

71sierragrande · 10-28-2011, 12:35 PM

But I also have to upgrade trans and rear. I have a th350 and a non posi currently.

10-28-2011, 12:35 PM	#5
71sierragrande Petroleum User Join Date: Dec 2010 Location: San Diego, California Posts: 928	Re: Package deal: BB, th400, 12 bolt posi...or ??? But I also have to upgrade trans and rear. I have a th350 and a non posi currently. __________________ 1971 GMC Sierra Grande 2WD 1/2 ton, 350/400 auto 2008 Chevy Silverado 2WD 1/2 ton LT1 5.3L auto