Proper way to measure driveshaft
February 9th, 2018, 10:39 AM
#1
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Join Date: Mar 2007
Location: eastern MA
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Proper way to measure driveshaft
Car is in pieces and I have a source to look for a driveshaft. 1970 442 w-30 4spd When I pick thru the pile what is the length driveshaft I am looking for and what is the proper way to measure? Would the length be from center of U-joint to center of U-joint. Anything special about the yoke? (how many teeth etc...)
Thank You
Thank You
February 9th, 2018, 11:58 AM
#2
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Join Date: Oct 2012
Posts: 140
Here is one example, if you were to buy a driveshaft from Denny's Driveshaft.
How to Measure for a Driveshaft
How to Measure for a Driveshaft
February 9th, 2018, 01:48 PM
#4
Old(s) Fart
Join Date: Mar 2007
Location: Northern VA
Posts: 47,258
Wow, that Denny's process seems complex.
It's hard to "measure" without the car assembled. If this is an otherwise stock 4spd A-body 2dr with a Type O, others can likely provide a dimension. The easy way to measure once the car is assembled is as follows:
1) Have car at ride height.
2) Insert front yoke into trans. Push it all the way in. Pull out 3/4" to 1".
3) Measure center-to-center from the front yoke u-joint trunnion to the pinion flange u-joint trunnion.
That's the dimension.
It's hard to "measure" without the car assembled. If this is an otherwise stock 4spd A-body 2dr with a Type O, others can likely provide a dimension. The easy way to measure once the car is assembled is as follows:
1) Have car at ride height.
2) Insert front yoke into trans. Push it all the way in. Pull out 3/4" to 1".
3) Measure center-to-center from the front yoke u-joint trunnion to the pinion flange u-joint trunnion.
That's the dimension.
February 9th, 2018, 02:25 PM
#6
Old School Olds
Join Date: Nov 2008
Location: Marble Falls TX
Posts: 8,939
I don't know if this will help or hurt Scrappy. I pulled this unit along with a 455
and Muncie 4 speed out of a 72 442 that had burned down. The overall drive shaft length is 57". Center to Center on the UJ's is 56 1/4". Also a shot of the yoke. The splines on the yoke are the same as the TH 350's.
and Muncie 4 speed out of a 72 442 that had burned down. The overall drive shaft length is 57". Center to Center on the UJ's is 56 1/4". Also a shot of the yoke. The splines on the yoke are the same as the TH 350's.
February 9th, 2018, 06:27 PM
#7
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Join Date: Mar 2007
Location: eastern MA
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Thanks that helps a lot, I would think that is what Im looking for then for a 70 442 4spd. ....Unless 70 is different from 71-72 ? I know the rear diff is a little different. What do you guys think?
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