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#1 |
Collector of Projects
Join Date: Apr 2003
Location: Las Vegas
Posts: 3,106
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need measurements of drive shafts
I am looking for the length and diameter of some one piece drive shafts. Also if they step down at the ends?
1. On a SWB with TH350/v8: ...a. Length from center of U-joint to center of U-joint ...b. Length from weld at front of shaft to where it gets wider 2. On a LWB with TH350/v8? ...a. Length from center of U-joint to center of U-joint ...b. Length from weld at front of shaft to where it gets wider |
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#2 |
Right turn Clyde
Join Date: Nov 2002
Location: Cincinnati, Ohio
Posts: 2,911
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What are you trying to do? I have a stock LWB driveshaft that I can measure but its kinda hard with only one person trying to measure it. I have done a th350 to th400 swap.
__________________
1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI |
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#3 |
Collector of Projects
Join Date: Apr 2003
Location: Las Vegas
Posts: 3,106
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I have a 71 SWB stepside w/ 307/th350. I want a one pices drive shaft. I need to know what will fit as a cheap swap. I was hoping an 80's SWB shaft will work without modification or at worst to shorten it a couple inches. I have a 96 LT1 w/ 4L60e and I know I will need a different shaft when I install it but that may not be till the end of summer or into fall. I will probably have a new one built at that point but I need to get rid of the 2 piece i have now. I dont even drive the truck that far partially because the drive shaft I have is going to fall apart. I already changed the carrier bearing and the center U-joint and I obviously screwed it up. Besides, if I have one cut to fit I can pass it along to another boeard member when I swap the new motor and trans and have then new one built ....
![]() In any case, i wanted to know the length of a SWB drive shaft to see if it was too long, too short, or would fit right in ... I asked about the LWB because if the SWB is too short, I could cut the LWB shaft down .... as long as the step down part of the shaft was long enough .... ![]() I know this was discussed before but I could never find any measurements .. just saying "it worked" but that was with the 700r4 conversion .... so .. I'm just not sure .... |
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#4 |
Account Suspended
Join Date: Dec 2003
Location: Texas
Posts: 2,686
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The newer model shaft wont work as the wheelbase is different and they use longtails .
I have a 72 & 68 the 72 runs a long tail 350 and the 68 runs a t-5 both same length trans and there also same length as a 700-r4 Ill get the measurements off of one i wanna say there like 57 inches but the way i measure them is outside of the u joint surface to the other side outside u joint surface wich would be the fartherst u joint location point so i guess if your wanting centerline take of an inch or so . Ill get ya an exact measurement tommorow. The shaft thats in my 72 came out of a 2 door chevvelle so if you happen to run across one of them that should work ,, As long as your runnin your motor in the V8 mount location. |
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#5 |
Account Suspended
Join Date: Dec 2003
Location: Texas
Posts: 2,686
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Oh and if your wanting a shaft to run with that 307/th350 ive got a shorttail one i can measure if your runnin a shortail trans
I didnt fully understand what you were lookin for till i read it twice ![]() ![]() ![]() |
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#6 |
Collector of Projects
Join Date: Apr 2003
Location: Las Vegas
Posts: 3,106
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the more i explain, the more i confuse myself and the people around me ....
I'm not sure if I have the short tail TH350 or not .. I would think so but I would have to dig the snow out and crawl under the truck to check ... brrrr.... |
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#7 |
Collector of Projects
Join Date: Apr 2003
Location: Las Vegas
Posts: 3,106
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So can anyone measure their 73-87 SWB driveshaft from center of U-joint to center of U-joint? I want to find a donor ASAP. Thanks.
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#8 |
Account Suspended
Join Date: Dec 2003
Location: Texas
Posts: 2,686
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I dont think the 73-87 is gonna work for you ill measure the driveshaft in my shop right now ill have the measurements posted withing 5 minutes sorry for forgetting about it lol@
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#9 |
Account Suspended
Join Date: Dec 2003
Location: Texas
Posts: 2,686
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Here is the measurement of a drivehshaft that came out of a project truck of mine it was running a 350/Th350 in the v8 location with a short tail Th350
From end To End 60 3/4 From Center Of u Joint To Center 59 1/2 Hope this helps What year LWB driveshaft measurement did you need ive got one for a 73-87 with 350 and one for a 72 two piece i can get the measure ment if you still need it. |
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#10 |
Registered User
Join Date: May 2003
Location: Shreveport LA
Posts: 3,170
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10-bolt rear end or 12-bolt? 10-bolt uses a shorter shaft (3/4" or so).
The T-350 normally used in trucks has a 9" tailshaft housing. Most cars used a 6" housing, although some full-sized cars used one that was 12" or 13". Last edited by jimfulco; 01-23-2004 at 07:43 AM. |
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#11 |
Collector of Projects
Join Date: Apr 2003
Location: Las Vegas
Posts: 3,106
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damn...
![]() and a LWB is too long with the stepdown to shorten .... I guess i need to keep looking for a donor .... |
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#12 |
Registered User
Join Date: May 2003
Location: Shreveport LA
Posts: 3,170
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A Suburban shaft is shorter than a LWB. My '79 Sub with T-350 & 10-bolt is 67.5" center-to-center. (shaft is '82-'93 length due to rear-end change)
Might hit the yards & check out big GM passenger car shafts. www.car-part.com lists '72 Pontiac Station Wagons as having 58.5 or 59" weld-to-weld, & other big cars should be similar, with small variances due to trans length, etc. Last edited by jimfulco; 01-24-2004 at 01:41 AM. |
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#13 |
Collector of Projects
Join Date: Apr 2003
Location: Las Vegas
Posts: 3,106
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ok.. maybe I can shorten the Burb drive shaft ... does it step down near the ends? Whats the diameter? I would have to have them hack 3" off each end ...
My other option is that the motor is mounted in the two forward holes on the frame rails. Maybe I can move it back. that would give me the extra couple inches I need .... I will do a search on motor position but if anyone has moved the moor back, feel free to share your experience .... |
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#14 |
Registered User
Join Date: May 2003
Location: Shreveport LA
Posts: 3,170
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It steps down around 6" or so at each end. I had a '72 Pontiac wagon & I remember that shaft being stepped, but I don't remember how far. I think I still have it somewhere, so if I can dig it up, I'll let you know.
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#15 |
Registered User
Join Date: May 2003
Location: Shreveport LA
Posts: 3,170
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Driveshaft from '72 Pontiac Catalina Safari Station Wagon with 455 engine & long-tail Turbo 400 trans. Big GM wagons from 71-76 use the same basic frame, so shafts should be similar.
Length weld-to-weld 59" Length center-to-center 62-3/8" Diameter at ends ~2-3/4" (14" step-down at front, 3" at rear) Diameter of central portion ~3-1/2" Diameter is eyeballed with a measuring tape, no calipers available Suburban shaft looks to be similar diameters (same eyeballs) |
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