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Jul 21st, 2025 | | | | Joined: Jul 2022 Posts: 11 'Bolter | | 'Bolter Joined: Jul 2022 Posts: 11 | Will a 1957 8 lug Chevy truck rear end fit a 1950 Chevy 3600 Truck? Little or no modifications? This would solve a brake upgrade problem and get a taller gearset for this truck. Thanks in advance for anyone's advice! | | | | | Joined: Apr 2005 Posts: 2,066 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,066 | There would be no gain on the gear set as both the 50 and 57 are 3/4 ton vehicles and would have a 4.57:1 rear axle ratio.
Could be a brake upgrade but you would likely have to relocate the spring mount pads on the later rear end to match the 50.
Fred
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine
| | | | | Joined: Jul 2022 Posts: 11 'Bolter | | 'Bolter Joined: Jul 2022 Posts: 11 | Thanks for the info, Fred. The '57 rear turns just over 4 revolutions, assuming 4.11. My '50 is definitely 4.57. I could easily move the spring mount pads. Do you know if the '57 is the same width as the "50? Or super close? I can't get to the '57 to measure it as it's a distance away. Thanks! | | | | | Joined: Mar 2004 Posts: 6,189 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 6,189 | If you measure your 1950 tire tread centers and compare it to the 1957 62.25" center of tire tread to center of tire tread you'll have your answer...I don't have info on the AD trucks... Mike B  | | | | | Joined: Apr 2005 Posts: 2,066 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,066 | You may have found something everyone is looking for. A 4.10 was an option in 67-72 3/4 ton trucks but not in a 57.
The center section may have been changed out using a later assembly. If so, go with it.
Fred
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine
| | | | | Joined: Jan 2022 Posts: 1,987 'Bolter | | 'Bolter Joined: Jan 2022 Posts: 1,987 | That 4.10 will give you a 10% reduction in engine speed at any MPH and a 10% reduction in acceleration.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
| | | | | Joined: Jul 2022 Posts: 11 'Bolter | | 'Bolter Joined: Jul 2022 Posts: 11 | Thanks everyone for the info and input, I know where I'm headed now. I'll measure the "50 today. This Stovebolt community is the best. | | | | | Joined: Sep 2002 Posts: 24 'Bolter | | 'Bolter Joined: Sep 2002 Posts: 24 | It took Me 16-18 months,But I DID find a 4.10 Center Section for My "Eaton HO-72" Differential... They ARE out there, just gotta keep diggin around, and when I got [censored] or Aggravated NOT finding it, Just go back to the Garage, Crack Open an ICE COLD"Summer Shandy" and just Know that You'll find One, just didn't happen Today.... and Crank up the Radio in that Garage ,Too....
Jimmy Gatz
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