Please help with switching out tranny! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

RainDog · 06-09-2002, 08:41 PM

Hey guys--the 700R4 on my truck is shot, and I'm looking to find a used replacement until I can afford to have this one rebuilt. Anyways, a friend of mine told me I would need to measure the tailshaft of my tranny to see if the one he had would fit. Just wondering if someone could explain to me why this is important (drive shaft length??), and also what I would need to look at and measure on my truck and on the potential replacement tranny to make sure of a fit. It's 4x4, I don't know if that makes a difference or not. Thanks!

RainDog

**68SWB4x4** · 06-09-2002, 09:40 PM

4x4 trannys have diffrent tail shafts i think

BLACK AND BLUE 67-72 · 06-09-2002, 10:51 PM

Yes, the tail shafts on 4x4's are shorter than on 2 wheel drives.

06-09-2002, 08:41 PM	#1
RainDog Registered User Join Date: Mar 2001 Location: Burien, WA, USA Posts: 391	Please help with switching out tranny! Hey guys--the 700R4 on my truck is shot, and I'm looking to find a used replacement until I can afford to have this one rebuilt. Anyways, a friend of mine told me I would need to measure the tailshaft of my tranny to see if the one he had would fit. Just wondering if someone could explain to me why this is important (drive shaft length??), and also what I would need to look at and measure on my truck and on the potential replacement tranny to make sure of a fit. It's 4x4, I don't know if that makes a difference or not. Thanks! RainDog __________________ "Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin slitting throats."

06-09-2002, 09:40 PM	#2
68SWB4x4 Strongman Garage Join Date: Apr 2000 Location: Salinas, CA Posts: 10,241	4x4 trannys have diffrent tail shafts i think __________________ Kalle 68 GMC Suburban 1500 4x4 SOLD 69 Pontiac Lemans 99 Silverado 4.8 5 speed ECSB [ Facebook Instagram Subscribe on YOUTUBE

06-09-2002, 10:51 PM	#3
BLACK AND BLUE 67-72 Firefighter Join Date: Feb 2001 Location: Yellville, Ar, USA Posts: 1,943	Yes, the tail shafts on 4x4's are shorter than on 2 wheel drives. __________________ '72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA



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