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#1 |
Registered User
Join Date: Jan 2005
Location: Brier Washington
Posts: 119
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Driveshafts
Can anyone tell me if there's a difference in driveshafts from a 1/2 coil spring truck and a 1/2 ton leaf spring truck. Also wondering about the heavy duty carrier bearing and the regular bearing. I'm think about switching a driveshaft with the heavy duty bearing.
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#2 |
Senior Member
![]() Join Date: Mar 2012
Location: Chesapeake, Va
Posts: 1,275
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Re: Driveshafts
subscribing
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Mike 72 C-10 Cheyenne off frame resto and Upgraded to 4 wheel disk, Tilt, Dakota Digital Dash / Rear slider. 421 SBC / TH350 3000RPM Stall Progression Ignition /Holley 750 DP/3:73 gear Eaton Limited Slip unit / 2 1/2 exhaust glasspacks ![]() |
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#3 |
Registered User
![]() Join Date: Sep 2012
Location: Spring, Tx.
Posts: 479
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Re: Driveshafts
I went from LB leaf spring to coil spring setup and used the same driveshaft!
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#4 |
Registered User
Join Date: Jun 2014
Location: Lavonia, Ga
Posts: 19
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Re: Driveshafts
There is a difference in the way the center yoke works on a leaf sprung versus a coil sprung truck. The leaf spring is a slip yoke while the coil spring is a fixed position thru-bolted yoke. The reason for this is that the control arms on the coil sprung truck are attached at a point where as the suspension travels, the arc remains roughly the same as the drive shaft arc. On a leaf sprung truck, the travel is much more straight up and down, requiring the slip yoke in the middle.
I know of people who have used one in the other. I guess a slip yoke would work fine in a leaf spring truck. Problems could arise using a fixed yoke on a leaf spring truck...particularly if the truck will see a lot of suspension travel. You can likely get by that way because the center bearing is rubber mounted and will allow a certain amount of give, but it's not the optimum situation. |
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#5 |
the boat guy
Join Date: Jul 2007
Location: springfield mo
Posts: 2,339
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Re: Driveshafts
What 72 said, while the light duty carrier does allow for sme movement fore and aft of the driveshaft it doesn't allow for the movement it would see on a leaf spring rear end. This is why all modern leaf spring trucks have a slip in the rear shaft.
You can get solid light duty carrier bearings, but you would have to add a slip and stub to the rear shaft.
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67, swb, fleet, tach, throttle, 5.3, 4l60e, 3.73's, fuel cell, 5 lug, p.d.b., 4-6 drop. great little truck 66, stevens drag/ski 18' silouette, 350, 2.02 doublehump heads. comp extreme marine 278 cam, vette 7 fin valve covers, old polished edelbrock intake, velvetdrive, casale v-drive, adj cavitation plate. 28, model a rpu project, |
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