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| | | | Joined: Mar 2005 Posts: 144 Wrench Fetcher | | Wrench Fetcher Joined: Mar 2005 Posts: 144 | I have a big block Chevy drivetrain installed in my 46 Chev 1/2 ton with a Chev Nova rear end. Problem is the universal joint bearings on the big block driveshaft is too large by about an eighth of an inch and therefore won't fit onto the Nova rear end. My question is can you take the universal joint ends apart and install smaller diameter bearings to fit the rear end or do I have to weld onto the driveshaft a complete rear yoke and universal joint. The driveshaft has to be cut and balanced so I was thinking the latter. Any info would be greatly appreciated. Bob T | | | | | Joined: Jan 2006 Posts: 586 Shop Shark | | Shop Shark Joined: Jan 2006 Posts: 586 | I would look into changing the companion flange on the rear with one from a 1/2 ton pick up.Remove yours and check the junk yards for size.
Wanted Good Woman:
Must be able to cook , clean , sew , tune engines and polish trucks. Must have old Stovebolt and garage. Please send picture of old Stovebolt and garage.
| | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | You could also get a dual size U-joint. Spicer makes them. One pair of trunnions are the large size, the other are the smaller. You'll need to have the sizes of the shaft trunnions and the differential trunnions to match it up.
Bill Burmeister
| | | | | Joined: Mar 2005 Posts: 144 Wrench Fetcher | | Wrench Fetcher Joined: Mar 2005 Posts: 144 | Thanks guys, both ideas are great, obviously the big block came out of a truck and the rear end is out of a Nova (car). It's nice to find you can get answers on the Stovebolt from people who know. I installed the cab (painted and finished ) on the frame today but I knew that eventually I was going to have to tackle the drive train problem. Thanks again.
Bob T | | | | | Joined: Nov 2006 Posts: 677 Shop Shark | | Shop Shark Joined: Nov 2006 Posts: 677 | A good drive line shop should be able to help you with this also I took my 51 driveshaft in to have it shortened and balanced and took them the differential trunnions measurements from the Trans am rear end Im running in mine and they fitted my driveshaft with the Dual size ujoint like longbox55 is talking about.
Fit great without any problems
Good luck Bob
Todd
Some people are like Slinkies, Their not really good for nothing... But they still bring a smile to your face when you push them down the stairs. 1951 3100 350 TBI Gallery Toddzilla... "$old" | | | | | Joined: Mar 2005 Posts: 144 Wrench Fetcher | | Wrench Fetcher Joined: Mar 2005 Posts: 144 | Thanks tabdoo 16, I think that's the route I'll go, closest shop that cuts and balances driveshafts out here is about 50 miles away so I'll give them a call.The bolt on the trunion looks like it was put there to stay but I imagine a good impact driver and socket might loosen it. Thanks for the info
Bob T | | | | | Joined: Mar 2005 Posts: 144 Wrench Fetcher | | Wrench Fetcher Joined: Mar 2005 Posts: 144 | Sorry, meant to say nut on the trunion.
Bob T | | |
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