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| | | | Joined: Feb 2007 Posts: 513 Shop Shark | | Shop Shark Joined: Feb 2007 Posts: 513 | i stared a post questioning if you can swap the pumkins on the 3/4 ton 47-53's, i was doing some reading on it, and my question is if you can swap these pumkins out with a 67-72 3/4 ton, can you find a 4x4 3/4 with a locker and just puit a locker in the rear end of the 47-53 using stock pumkin, or are these totally different?
1949 Chevy 3600 Flatbed all orginal 1964 gmc 4000 1973 gmc 6000 2005 chevy duramax 4x4 1994 chevy 1500 Trucks are GM and Tractors are Orange "I don't measure a man's success by how high he climbs but how high he bounces when he hits bottom." - General George S. Patton | | | | | Joined: Feb 2003 Posts: 452 Shop Shark | | Shop Shark Joined: Feb 2003 Posts: 452 | I think you need the later frame. To install a 4.10 (or rarer, a 3.90) in a pre-62, you need the later carrier. Different internal measurements, I'd guess, so a later locker would need the later carrier.
Current fleet (subject to change w/o notice) \'49 GMC 3/4-Ton , 60 Austin Healey Frog-eye Sprite (some assembly required), 2011 Dodge Avenger, 2015 Jeep Cherokee. No, they don't all run. My other ride is a (B737)no, (B767)no, A320.... Update... was Embraer E190, now Boeing B787. Knowledge is a wonderful thing, but ignorance means you don't know you can't do something.
| | | | | Joined: May 2006 Posts: 237 Shop Shark | | Shop Shark Joined: May 2006 Posts: 237 | First regarding carrier. I've heard (never tried myself) that the 4.10 gear can fit any carrier. However, nobody sells the gears alone, so why not buy the whole pumpkin and put it in, then no worry.
They used to sell the 3.90 gears, but I don't think they've had them available for years. You did need the later carrier for these gears.
They did make a 17 spline "locker" for these pumpkins. They are NOT common. However, you can buy a detroit locker built for the 14 bolt GM axle, and buy some correct length 14 bolt axle shafts (from Patricks for instance) and install both of them in this axle.
The above is a REALLY STRONG setup. More like a 1 1/2 ton axle. The 4x4 guys been doing this for a while, cause it's strong, it's a full floater, it's light, and it's got pretty decent ground clearance. Only thing they really need is the 5.13 gear from the 1 ton axle. Fairly rare. | | |
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