Difference between 350 and 400 trans bolt location - The 1947 - Present Chevrolet & GMC Truck Message Board Network

basshawk · 05-15-2010, 02:45 AM

Im doing a swap to a auto trans in my 64. I am going to use my 350 trans as a template to set my crossmember. Will the distance to the trans mount be the same when i get my 400?
Dan

nxtruck · 05-15-2010, 01:56 PM

No. The TH400 is a little longer than the 6" tail TH350. Nothing that a new set of holes in the frame won't fix, though. BTW, the input yoke will be different and the driveshaft will have to be shortened when going to the 400.

basshawk · 05-15-2010, 03:15 PM

Quote:

Originally Posted by nxtruck

No. The TH400 is a little longer than the 6" tail TH350. Nothing that a new set of holes in the frame won't fix, though. BTW, the input yoke will be different and the driveshaft will have to be shortened when going to the 400.

Thanks for the info

05-15-2010, 02:45 AM	#1
basshawk Registered User Join Date: Nov 2009 Location: anaheim, ca Posts: 24	Difference between 350 and 400 trans bolt location Im doing a swap to a auto trans in my 64. I am going to use my 350 trans as a template to set my crossmember. Will the distance to the trans mount be the same when i get my 400? Dan

05-15-2010, 01:56 PM	#2
nxtruck Registered User Join Date: Jun 2006 Location: Jackson, Mo. Posts: 607	Re: Difference between 350 and 400 trans bolt location No. The TH400 is a little longer than the 6" tail TH350. Nothing that a new set of holes in the frame won't fix, though. BTW, the input yoke will be different and the driveshaft will have to be shortened when going to the 400. __________________ Chris 1966 Chevy C10 LWB, 434 sbc, TH350, 12-bolt, factory suspension, pump gas 7.02 @ 95.8, 1.45 60' 1965 Chevy C10 LWB, 355 sbc, TH350, daily driver



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