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Mod | | | Forums66 Topics128,023 Posts1,055,367 Members48,420 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Feb 2001 Posts: 1,094 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 1,094 | Will a rearend from a 57 GMC i/2tn truck swap with a 1959 Chevy 1/2tn? Looking at possibly having different gear ratio.
Tommy
59 apache 1/2t
261 short stepside
| | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | Get out your tape and measure. Then check the gear ratio and U-joint measurements. GMC might have Spicer rear, who cares if dimensions are OK!
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
| | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | I put a Spicer from a '59 GMC in my '56 Chevy. The only thing I had to do was move the brake hose bracket from one side to the other. I got a 3.07 ratio. | | | | | Joined: Feb 2001 Posts: 1,094 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 1,094 | Ok, thanks for the info. Some one locally selling parts and I was hoping maybe could get a better than I have ratio (3.90) and swap the carrier.
Tommy
59 apache 1/2t
261 short stepside
| | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | If it's a Spicer, and it probably is, you'll need to swap the entire assembly. | | | | | Joined: Feb 2001 Posts: 1,094 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 1,094 | Thanks Cletis, I'm waiting to hear back from the seller,then will go see what it really is.
Tommy
59 apache 1/2t
261 short stepside
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