Rear Differential housing - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**425HP409** · 04-23-2013, 06:35 PM

Is it true that the 70-72 1/2 ton rear differential housings are the same, wider than the previous years. I have a 68 that I converted to 5 lug with 72 axles and have the problem that they are too long for the drums. I installed 3" van drums so that the shoes would engage the drum, but now I want to make it correct. I need a correct length housing.

**nightmare** · 04-23-2013, 06:59 PM

yes, mid year 70 to end of 72 were wider than the 67 to mid year 70. A good axle shop should be able to cut yours to the proper length and cut the correct depth splines on it. otherwise, you'll need to either get new axles, or a new rear end housing.

**too much stuff** · 04-23-2013, 07:06 PM

Quote:

Originally Posted by nightmare

yes, mid year 70 to end of 72 were wider than the 67 to mid year 70. A good axle shop should be able to cut yours to the proper length and cut the correct depth splines on it. otherwise, you'll need to either get new axles, or a new rear end housing.

I agree with this...

**425HP409** · 04-25-2013, 02:32 PM

My local differential parts house in Dallas is getting me the 30.5" 5 lug axles for under $150 each as opposed to the ones Moser sells for $260 each, probably the same axle.
Posted via Mobile Device

CC69Rat · 04-25-2013, 03:27 PM

I paid a little shy of $300 for Mosers, seals, bearings, and shipping .. the best I can recall. I know they weren't $260 per axle. Buck got the later axles, shipped for $157 for the pair. The earlier ones are just a bit harder to find.

I'd make sure your guy is not charging you $150ea for them.. just sayin.

http://www.moserengineering.com/axle...spline-31.html

Notice at the lower section of the screen it shows (1-pair)

**425HP409** · 04-25-2013, 04:00 PM

Oh, I didn't read the Moser listing very well, I didn't see that the $260 was for a pair. Thanks.....
Posted via Mobile Device

04-23-2013, 06:35 PM	#1
425HP409 425hp409 Join Date: Oct 2008 Location: Prosper Texas Posts: 841	Rear Differential housing Is it true that the 70-72 1/2 ton rear differential housings are the same, wider than the previous years. I have a 68 that I converted to 5 lug with 72 axles and have the problem that they are too long for the drums. I installed 3" van drums so that the shoes would engage the drum, but now I want to make it correct. I need a correct length housing. __________________ Charles 68 SWB, Dad bought new, now 396 & factory ac 64 Impala SS, 409 425HP, 4 speed AC 64 Bel Air Wagon, 400 Small Block 57 Bel Air all original 283 w/Factory Air 77 GMC Sprint, 454/425HP 67 Olds 442, all original 90 ZR1 Corvette

04-25-2013, 02:32 PM	#4
425HP409 425hp409 Join Date: Oct 2008 Location: Prosper Texas Posts: 841	Re: Rear Differential housing My local differential parts house in Dallas is getting me the 30.5" 5 lug axles for under $150 each as opposed to the ones Moser sells for $260 each, probably the same axle. Posted via Mobile Device __________________ Charles 68 SWB, Dad bought new, now 396 & factory ac 64 Impala SS, 409 425HP, 4 speed AC 64 Bel Air Wagon, 400 Small Block 57 Bel Air all original 283 w/Factory Air 77 GMC Sprint, 454/425HP 67 Olds 442, all original 90 ZR1 Corvette

04-25-2013, 03:27 PM	#5
CC69Rat Registered User Join Date: Jan 2011 Location: Chattanooga TN Posts: 6,212	Re: Rear Differential housing I paid a little shy of $300 for Mosers, seals, bearings, and shipping .. the best I can recall. I know they weren't $260 per axle. Buck got the later axles, shipped for $157 for the pair. The earlier ones are just a bit harder to find. I'd make sure your guy is not charging you $150ea for them.. just sayin. http://www.moserengineering.com/axle...spline-31.html Notice at the lower section of the screen it shows (1-pair) __________________ Chad 1967 C10 SWB - Project Savannah - 6.0/4L80 Currently underway 1968 C10 SWB - TOTY 2018, 50th Anniversary Tribute Project * Sold * Pride and Joy 1986 Silverado Short Fleet - Scarlet Sold 1985 Silverado Short Fleet Sold 2022 Jeep Gladiator Mojave 2001 Jeep Cherokee XJ 4x4 - Lifted, Built 1992 Jeep Cherokee XJ 4x4 - Lifted 2013 Honda Accord EX-L v6 Coupe 6spd (wife's ride)

04-25-2013, 04:00 PM	#6
425HP409 425hp409 Join Date: Oct 2008 Location: Prosper Texas Posts: 841	Re: Rear Differential housing Oh, I didn't read the Moser listing very well, I didn't see that the $260 was for a pair. Thanks..... Posted via Mobile Device __________________ Charles 68 SWB, Dad bought new, now 396 & factory ac 64 Impala SS, 409 425HP, 4 speed AC 64 Bel Air Wagon, 400 Small Block 57 Bel Air all original 283 w/Factory Air 77 GMC Sprint, 454/425HP 67 Olds 442, all original 90 ZR1 Corvette



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