Few Questions? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mcmlxix · 11-10-2003, 04:16 PM

What is the wheel base of a short bed truck from 73-87?
Did they have one-piece drive shafts?
What is the length of the driveshaft from center to center of the U-joint?
If it has a TH350, what length tailshaft do you have? 6" or 9"?

**Captkaos** · 11-10-2003, 04:38 PM

Wheelbase for a Short Bed is 117.5"
All Short beds use a 1 piece driveshaft.
Lenght of the shaft is dependent of the type and style of transmission. (TH350/Th400, and short or long tail) I can tell you that a short tail TH350 will need about a 56" center to center drive shaft. Easiest way to tell is measure. The input shaft should be 6" as far as I know.

mcmlxix · 11-11-2003, 12:55 PM

What I am trying to figure out is what donor truck I can use a drive shaft from to convert my 71 to a one piece. I'm installaing a 700r4 so I have overdrive. Some one said he used one from a 82 c/10 SWB. . . direct fit .. but a little longer is ok... Its easier to shorten it then make it longer ...
Can everyone with a 73-87 SWB list what they have:
Example:
85 GMC SWB / Small Block 305 / th350 6" tail / 56" drive shaft

MylilBowTie · 11-11-2003, 01:16 PM

My 84 long bed stock had a th350c with one piece driveshaft. The th350c had the 9in tailshaft, and the driveshaft is 70in center u-joint to center u-joint. Not sure off hand what the spline count for the 700r4s are and I think there was two different ones also? I think the th350 splines are 28 and the 700r4s had 26 and 28.

11-10-2003, 04:16 PM	#1
mcmlxix Collector of Projects Join Date: Apr 2003 Location: Las Vegas Posts: 3,106	Few Questions? What is the wheel base of a short bed truck from 73-87? Did they have one-piece drive shafts? What is the length of the driveshaft from center to center of the U-joint? If it has a TH350, what length tailshaft do you have? 6" or 9"? __________________ Rich 1972 K5 Blazer CST Click HERE D60 BIG BRAKE UPGRADE Click HERE

11-10-2003, 04:38 PM	#2
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,935	Wheelbase for a Short Bed is 117.5" All Short beds use a 1 piece driveshaft. Lenght of the shaft is dependent of the type and style of transmission. (TH350/Th400, and short or long tail) I can tell you that a short tail TH350 will need about a 56" center to center drive shaft. Easiest way to tell is measure. The input shaft should be 6" as far as I know. __________________ Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com

11-11-2003, 12:55 PM	#3
mcmlxix Collector of Projects Join Date: Apr 2003 Location: Las Vegas Posts: 3,106	What I am trying to figure out is what donor truck I can use a drive shaft from to convert my 71 to a one piece. I'm installaing a 700r4 so I have overdrive. Some one said he used one from a 82 c/10 SWB. . . direct fit .. but a little longer is ok... Its easier to shorten it then make it longer ... Can everyone with a 73-87 SWB list what they have: Example: 85 GMC SWB / Small Block 305 / th350 6" tail / 56" drive shaft __________________ Rich 1972 K5 Blazer CST Click HERE D60 BIG BRAKE UPGRADE Click HERE

11-11-2003, 01:16 PM	#4
MylilBowTie Right turn Clyde Join Date: Nov 2002 Location: Cincinnati, Ohio Posts: 2,911	My 84 long bed stock had a th350c with one piece driveshaft. The th350c had the 9in tailshaft, and the driveshaft is 70in center u-joint to center u-joint. Not sure off hand what the spline count for the 700r4s are and I think there was two different ones also? I think the th350 splines are 28 and the 700r4s had 26 and 28. __________________ 1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI



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