from 4 speed to auto - The 1947 - Present Chevrolet & GMC Truck Message Board Network

hjalbert · 05-02-2002, 08:02 PM

ok guys, i have a th350 and the cab that it came with, i plan on using that cab in my truck, the truck the th350 came in is not a 4x4, how ever mine is, other then cutting a spot for the transfer case shifter, will it bolt up to the th350? i currently have a 4 speed with granny low, i am a moron when it comes to tranny/ transfer case stuff, dont even know what transfer case i have. what i mean to ask is will the transfer case bolt up to the transmission? ui know the tranny will bolt to tthe engine, also will i need a special crossmember for that? thanks Harry

*Fast68Chevy* · 05-02-2002, 08:31 PM

2wd tranny wil not bolt to a transfer case, way different tailshafts, 4x4 auto trannies donthave a tailhousing, and have a very short tail shaft, 2wd trannies have a houding bolted on to the tail end of the main case

you can convert a 4x2 tranny to a 4x4 tranny, but you have to completely tear tranny all apart to pull the putput shaft out and swap ina 4x4 one and completely reassemble tranny guts

i dont know if you wanna tackle this or not, but you wil need alot of parts to go from 4 speed to auto on a 4x4, alot ! pretty big job if you dont know all about this stuff, only way to learn is to do it though, so if you have a good wallet then go for it, you wil need the following to swap from manual to auto in 4x4, these are off the top of my head:
flexplate, shorter flywheel bolts to go into crank flange, autro trans xmemeber, auto linkage, auto drivesahft, auto columnm, possible frotn driveshaft length change if auto t/case adaptor doesnt make up for difference by being shorter in length,
wuto radiator, auto cooling lines pair, more i cant think of right now, you basically need a donor 4x4 auto truck or alot of luck

good luck
good luck

------------------
Randy- Lincoln, IL
randy@ccaonline.com 2177353230
*many GM parts bought, traded, or sold -am parting out: '81 Cutlass Supreme Brougham

current fleet: -71 C-10 350/CH465/3.07- basketcase
-84 Z28 5.0L/700R4/3.73 daily driver
-84 Firebird/SE 2.8L/T-5/3.73/engine bad
-82 purple Trans Am, project #2
*Paint is overrated*
© RSS Enterprises 2000

[This message has been edited by Fast68Chevy (edited May 02, 2002).]

05-02-2002, 08:02 PM	#1
hjalbert cracker Join Date: Sep 2001 Location: Wilmington, NC Posts: 1,021	from 4 speed to auto ok guys, i have a th350 and the cab that it came with, i plan on using that cab in my truck, the truck the th350 came in is not a 4x4, how ever mine is, other then cutting a spot for the transfer case shifter, will it bolt up to the th350? i currently have a 4 speed with granny low, i am a moron when it comes to tranny/ transfer case stuff, dont even know what transfer case i have. what i mean to ask is will the transfer case bolt up to the transmission? ui know the tranny will bolt to tthe engine, also will i need a special crossmember for that? thanks Harry __________________ FOUNDING MEMBER OF THE DRUM BRAKE CLUB Harry John Albert III located in Phoenix, AZ 1972 GMC JIMMY, 1969 lwb Chevy Frame, 1999 bmw k1200 ltc 1992 Kawasaki concours 1991 bmw k75 1973 cortez motorhome

05-02-2002, 08:31 PM	#2
Fast68Chevy Account Suspended Join Date: May 2000 Location: IL Posts: 0	2wd tranny wil not bolt to a transfer case, way different tailshafts, 4x4 auto trannies donthave a tailhousing, and have a very short tail shaft, 2wd trannies have a houding bolted on to the tail end of the main case you can convert a 4x2 tranny to a 4x4 tranny, but you have to completely tear tranny all apart to pull the putput shaft out and swap ina 4x4 one and completely reassemble tranny guts i dont know if you wanna tackle this or not, but you wil need alot of parts to go from 4 speed to auto on a 4x4, alot ! pretty big job if you dont know all about this stuff, only way to learn is to do it though, so if you have a good wallet then go for it, you wil need the following to swap from manual to auto in 4x4, these are off the top of my head: flexplate, shorter flywheel bolts to go into crank flange, autro trans xmemeber, auto linkage, auto drivesahft, auto columnm, possible frotn driveshaft length change if auto t/case adaptor doesnt make up for difference by being shorter in length, wuto radiator, auto cooling lines pair, more i cant think of right now, you basically need a donor 4x4 auto truck or alot of luck good luck good luck ------------------ Randy- Lincoln, IL randy@ccaonline.com 2177353230 many GM parts bought, traded, or sold -am parting out: '81 Cutlass Supreme Brougham current fleet: -71 C-10 350/CH465/3.07- basketcase -84 Z28 5.0L/700R4/3.73 daily driver -84 Firebird/SE 2.8L/T-5/3.73/engine bad -82 purple Trans Am, project #2 Paint is overrated* © RSS Enterprises 2000 [This message has been edited by Fast68Chevy (edited May 02, 2002).]



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