new to 4x4's...advice needed - The 1947 - Present Chevrolet & GMC Truck Message Board Network

GreenMystChevy · 12-02-2002, 08:52 PM

I am looking around for a cheap ol 4x4 that I can throw an engine and tranny in that I have sitting around. I know nothing about 4x4s for these years and am wondering how the 4x4 gearbox hooks up. What would I be looking for as far as running gear problems? If I had a good tranny and engine, can I put that in a 4x4 as long as the truck has a transfer case that comes with it. Are they connected by bolts or how does that work?

Sorry if I am a little vague I am just not sure what I am looking for and what I can do. Thanks guys.

GreenMystChevy · 12-03-2002, 02:13 AM

TTT

mrein3 · 12-03-2002, 08:36 AM

The transmission between a 4x4's engine and its transfer case is different than a 2wd's. They are shorter. They don't have the 2wd cone on the back. I'm not sure on the manuals but for sure on the autos the output shaft is different on 2wd verses 4wd. There is also an adapter between the tranny and transfer. This piece is different on 67-72 trucks for each tranny/transfer combination.

GreenMystChevy · 12-04-2002, 12:52 PM

So, 4 wheel drive trannies are different than 2 wheel drive ones, right? I would have to get a tranny specific for a 4x4 to go in it.

HeavyK20 · 12-04-2002, 01:01 PM

Yes, the trannys are different. On 4x4's the transfer case bolts to the back of the transmission with an adapter. There is a splined coupling that connects the tranny output shaft to the T-case input shaft.

yellowgmc · 12-04-2002, 01:10 PM

you'd probably be better off pulling a tranny and xsfr case from a donor truck, then you've got all the adaptors and input output shafts. you'll still need a front driveshaft as well. pick a couple of 4x4 magazines. the'll give you a base of info on what to look far and what to avoid.

12-02-2002, 08:52 PM	#1
GreenMystChevy Registered User Join Date: Jan 2002 Location: Woodinville, WA Posts: 513	new to 4x4's...advice needed I am looking around for a cheap ol 4x4 that I can throw an engine and tranny in that I have sitting around. I know nothing about 4x4s for these years and am wondering how the 4x4 gearbox hooks up. What would I be looking for as far as running gear problems? If I had a good tranny and engine, can I put that in a 4x4 as long as the truck has a transfer case that comes with it. Are they connected by bolts or how does that work? Sorry if I am a little vague I am just not sure what I am looking for and what I can do. Thanks guys. __________________ Jeremy '71 C-10 '72 GMC K2500 '72 Nova (Dad's) '70 Chevelle SS '55 Sedan Delivery Attempting to build up this here 4x4...make her real tall and purty...well, maybe just tall

12-03-2002, 02:13 AM	#2
GreenMystChevy Registered User Join Date: Jan 2002 Location: Woodinville, WA Posts: 513	TTT __________________ Jeremy '71 C-10 '72 GMC K2500 '72 Nova (Dad's) '70 Chevelle SS '55 Sedan Delivery Attempting to build up this here 4x4...make her real tall and purty...well, maybe just tall

12-03-2002, 08:36 AM	#3
mrein3 Registered User Join Date: Feb 2000 Location: Center City, MN, USA Posts: 3,254	The transmission between a 4x4's engine and its transfer case is different than a 2wd's. They are shorter. They don't have the 2wd cone on the back. I'm not sure on the manuals but for sure on the autos the output shaft is different on 2wd verses 4wd. There is also an adapter between the tranny and transfer. This piece is different on 67-72 trucks for each tranny/transfer combination. __________________ '70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN

12-04-2002, 12:52 PM	#4
GreenMystChevy Registered User Join Date: Jan 2002 Location: Woodinville, WA Posts: 513	So, 4 wheel drive trannies are different than 2 wheel drive ones, right? I would have to get a tranny specific for a 4x4 to go in it. __________________ Jeremy '71 C-10 '72 GMC K2500 '72 Nova (Dad's) '70 Chevelle SS '55 Sedan Delivery Attempting to build up this here 4x4...make her real tall and purty...well, maybe just tall

12-04-2002, 01:01 PM	#5
HeavyK20 Registered User Join Date: Dec 2001 Location: New Richmond, WI Posts: 547	Yes, the trannys are different. On 4x4's the transfer case bolts to the back of the transmission with an adapter. There is a splined coupling that connects the tranny output shaft to the T-case input shaft. __________________ Eric 1969 K20, 465/205 package

12-04-2002, 01:10 PM	#6
yellowgmc Getting cabin fever?!?!?! Join Date: Oct 2002 Location: chisholm, mn Posts: 1,679	you'd probably be better off pulling a tranny and xsfr case from a donor truck, then you've got all the adaptors and input output shafts. you'll still need a front driveshaft as well. pick a couple of 4x4 magazines. the'll give you a base of info on what to look far and what to avoid. __________________ Member of the Discs Up Front Club 1972 GMC 1500 1994 F-150 XL 4x4 Tact is for people not whitty enough to be sarcastic

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