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Old 09-23-2011, 08:13 PM
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mrplumber

OK here it is I have a 1937 pickup project 1970 nova front clip 350v8 th350 trans rear is original 1937. WHAT TO DO leave it and I have to change the yoke to fit modern drive shaft or change the complete rear to 10 or 12 bolt? can this old rear hold up? its big but I don't know how strong, can you get parts? (gears) maybe a posi for it?

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Old 09-23-2011, 11:05 PM
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1937 chev

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Originally Posted by mrplumber
OK here it is I have a 1937 pickup project 1970 nova front clip 350v8 th350 trans rear is original 1937. WHAT TO DO leave it and I have to change the yoke to fit modern drive shaft or change the complete rear to 10 or 12 bolt? can this old rear hold up? its big but I don't know how strong, can you get parts? (gears) maybe a posi for it?
I would put a newer rearend in it. You have to find one that is wide enough, then decide what kind of springs to use, but then you will have better brakes, better gearing, and if you change springs a better ride.

Bob
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Old 09-23-2011, 11:11 PM
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37 chevy

Hey mike, you can buy change over kits to make the original ford torque tube rear end an open drive. I don't know if you can find one for an old Chevy, but it isn't that hard to put a complete late model chevy unit in the early model chassis. lots of luck with it.
Peace and Blessings,
Donna
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Old 09-24-2011, 04:18 AM
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I think you are going to find that parts availability especially a ring and pinion set with a decent gear ratio for your build are going to be hard to impossible to find for the original rear end.

I happen to be building a 37 Dodge PU, and from what I’ve found the Ford, Chevy and Doge pickups of that era all have a pretty narrow trac width. A rear end with a 58” wide width (axel flange to axel flange) fit pretty well under these pickups. You could use one just a bit wider but will need wheels with correct back spacing to get it to fit right in the rear fenders.

Here are a few options for 58” rear ends that should work pretty well:

1970 Nova. These are a 10 bolt rear end that were set up for leaf springs. The location of the spring perches will probably need to be relocated, but it should even work with your original springs if desired. ( I currently have a 70 Nova rear end under my Dodge just to move it around and it does fit pretty well).


1957-9 Ford Station Wagon, first generation Ford Bronco. These are Ford 9” units which might be overkill for a reasonably stock 350. It will give you some bragging rights at the car shows however. As with the Nova Rear end the spring perches will likely need to be changed. Down side is the stock bolt pattern for the wheels is different than the Nova clip you are running in the front (axels and drums can be redrilled for the chevy pattern).

Ford Maverick ( 5 Lug). These are a 58” wide 8” rear end. They are usually quite a bit cheaper to find than the 9” units. As with the 9” the down side is the stock bolt pattern for the wheels is different than the Nova clip you are running in the front.

1978-1987 GM G Body. If you’re up for building a triangulated 4 link setup as opposed to the leaf spring rear you currently have the G Body (Monte Carlo, Malibu, Cutlass, Regal, Grand Prix, El Camino) 10 bolt rear end would be a good choice. The heavy duty 8.5 ring gear units are found under the Buicks with turbos, and the HO Oldsmobile models. The lighter duty 7.5 ring gear units are found under everything else. The 7.5s are good for street use with reasonably sized tires, but tend to go boom under hard use.
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