Questions on stock 56 rear end - The 1947 - Present Chevrolet & GMC Truck Message Board Network

craig32 · 08-27-2016, 08:50 PM

Greetings! I'm finally taking care of the body work and putting a bed floor in my 56. The hack job 'build' it had done to it is being corrected, and I'm looking to replace the rear end and/or wheels and tires. It had a 4WD set up under it, and the fenders will sit on the rear tires if I take the blocks out. It supposedly has a 70's blazer diff. in it - are they wider than stock? If not, I can probably get away with different wheels and tires to let it down. I replaced the 4X4 front with a stock axle, but the tires are still a little wide as compared to fitting under the fenders. I don't think the diff. is at the right angle, it should be pointing up a bit, correct? The engine also seems to be pointing down in the front as well, and the fan only covers half of the radiator, can be fixed with an electric fan.

In summary - what years of 6 lug rear will be the right width? Is the blazer rear in it the same?

Thanks!
Craig

**mr48chev** · 08-27-2016, 11:08 PM

70 axles are somewhat wider than the TF and up though 68.

I'd imagine that the wheels are probably at least 8 inches wide if not ten that the 4x4 brigade seems to favor.
Stock offset rims might get you inside the fenders but it will still be close.

OrrieG · 08-28-2016, 12:16 AM

Here is a chart that I have found helpful.
http://www.jalopyjournal.com/forum/a...0-jpg.3052551/

08-27-2016, 08:50 PM	#1
craig32 Registered User Join Date: Apr 2011 Location: PA Posts: 56	Questions on stock 56 rear end Greetings! I'm finally taking care of the body work and putting a bed floor in my 56. The hack job 'build' it had done to it is being corrected, and I'm looking to replace the rear end and/or wheels and tires. It had a 4WD set up under it, and the fenders will sit on the rear tires if I take the blocks out. It supposedly has a 70's blazer diff. in it - are they wider than stock? If not, I can probably get away with different wheels and tires to let it down. I replaced the 4X4 front with a stock axle, but the tires are still a little wide as compared to fitting under the fenders. I don't think the diff. is at the right angle, it should be pointing up a bit, correct? The engine also seems to be pointing down in the front as well, and the fan only covers half of the radiator, can be fixed with an electric fan. In summary - what years of 6 lug rear will be the right width? Is the blazer rear in it the same? Thanks! Craig

08-27-2016, 11:08 PM	#2
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,711	Re: Questions on stock 56 rear end 70 axles are somewhat wider than the TF and up though 68. I'd imagine that the wheels are probably at least 8 inches wide if not ten that the 4x4 brigade seems to favor. Stock offset rims might get you inside the fenders but it will still be close. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

08-28-2016, 12:16 AM	#3
OrrieG Registered User Join Date: Jun 2006 Location: Idaho Posts: 8,800	Re: Questions on stock 56 rear end Here is a chart that I have found helpful. http://www.jalopyjournal.com/forum/a...0-jpg.3052551/ __________________ 1959 Chevy Short Fleetside w/ 74 4WD drive train (current project) OrrieG Build Thread 1964 Chevelle Malibu w/ 355-350TH (daily driver) Helpful AD and TF Manual Site Old Car Manual Project



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