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| | | | Joined: Jun 2005 Posts: 1,002 'Bolter | | 'Bolter Joined: Jun 2005 Posts: 1,002 | So, I'm trying to put my 41 3/4 ton back together. I put a 350 with a 700R4 in it and now I'm looking at my driveshaft.
It had/has a split drive shaft. Should I have a one piece driveshaft made, or should I keep the split drive shaft? My overall length is 62".
I will be using it as a "truck". It will have an 8' bed.
Thanks for your opinion.
~ Victor 1941 3/4-Ton Pickup (in process). Read about it in the DITY Gallery1955 Grumman Kurbside "Doughboy" 235/3 on tree w/ OD 1957 3100 - moved on 1959 C4500 Short Bus "Magic Bus" - moved on 1959 G3800 1 Ton Dually "Chief" - moved on 1958 C4400 Viking "Thor" ~ moved on to fellow Bolter | | | | | Joined: Apr 2005 Posts: 2,832 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,832 | A 62" driveshaft with around a 3.5" tube diameter will work without problems. We have used a max of 72" with a 4" tube but one is tempting trouble. Absolutely a two piece for anything longer. Back in the big cars with long shafts era they used shafts with a bottle neck at one or both ends, a cardboard tube, and rubber bushings at the end to name a few ways to dampen vibrations or harmonics. A lesson learned on the 58-64 "X" frame Chevy's with the two piece shaft is to be sure and have the weight on the suspension before you tighten the hanger bearing bolts.
Evan
| | | | | Joined: May 2005 Posts: 8,878 . | | . Joined: May 2005 Posts: 8,878 | Here is some info from a similar thread/discussion. Driveline Set Up http://www.stovebolt.com/techtips/driveline/setup/index.htmlAllowable shaft length is a factor of tube size and RPM mostly, it's covered in the manual with lots more detail. The basic idea is keep it short and stiff enough to not turn into a banana at speed. ..if it had a two piece shaft before very likely you need one again. Your OD transmission increases driveshaft RPM over engine RPM, two piece shaft (shorter than one long) might again be ideal to cope with the increased speed. General rule of thumb (with single shaft) is the transmission and rear axle pinion are parallel. More details, situations (like two piece shaft), and reasoning in the manuals linked above. Then because the links to the manuals in the tech tip are temporarily broken search for the manual numbers to find the data, and or try these links. http://media.spicerparts.com/media/details/kH7StMRqGZ9kzxSZMhttp://media.spicerparts.com/cfs/files/media/R43pySn3ew5wA2BHs/tcfp0088.pdf | | | | | Joined: Jun 2005 Posts: 1,002 'Bolter | | 'Bolter Joined: Jun 2005 Posts: 1,002 | Thanks Evan and Grigg for the info.
I'm headed up to my driveshaft guy now!
Last edited by VEW; 09/12/2016 3:55 PM.
~ Victor 1941 3/4-Ton Pickup (in process). Read about it in the DITY Gallery1955 Grumman Kurbside "Doughboy" 235/3 on tree w/ OD 1957 3100 - moved on 1959 C4500 Short Bus "Magic Bus" - moved on 1959 G3800 1 Ton Dually "Chief" - moved on 1958 C4400 Viking "Thor" ~ moved on to fellow Bolter | | |
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