Comments on: Mopar Rear Axle Dimensions

By: Jim

Jim — Wed, 24 Feb 2021 18:58:03 +0000

Hey there….kind of a silliy question….I just had a guy restore my 1973 D100 and he put a new rear end (ford 9″) and disc brakes on the back…I measured the distance (outside of tire to outside of tire) and the front axle measures 78″ but the rear now measures only 74″….shouldn’t they be the same distance?

By: Sander Hoefling

Sander Hoefling — Tue, 24 Nov 2020 01:28:17 +0000

Hi I’m looking at ordering a dana 60 for my 1972 dodge D100 through moser this week. It had an 8 3/4 in it from factory that i removed and I haven’t modified anything in the suspension besides installing new oem leaf springs in the stock location. When ordering my dana 60 do I use the same dimensions as the 8 3/4 or hope their tech line can help? thank you

By: tj jj

tj jj — Wed, 08 May 2019 06:35:05 +0000

chad,

Find a service manual for your year vehicle. That is the best source of information besides someone with first hand experience.

If you decide to dig into the truck yourself, just keep track of exactly how you took everything apart. That will allow you to learn from your mistakes. Make mistakes in the garage so they won’t happen on the road.

If you aren’t getting above 45mph in any gear, that problem should be found before anything is replaced. It may be the axle ratio that is the cause. Whoever told you it needs taller gears definitely thinks that’s the solution, but you should understand the true cause of the issue before finding a solution. Your disc brake conversion will cost alot, i assume you also need new wheels if you’re to be using a new stud pattern. All i mean is, it’s expensive, so don’t expect new parts to fix what was already wrong with the truck.

Find a vintage car specialist near you, even a 100 mile drive is well worth it for first hand experience.

Once you can get it up to 95mph, you’ll probably take another good look underneath the truck.

Work smart, not hard.

By: Chad

Chad — Tue, 07 May 2019 16:23:29 +0000

There are a lot of Questions, and not a lot of Answers. But, WTH, I’ll ask anyway…

I have a ’59 Dodge D100, my 15yr old daughter’s chosen first vehicle. I don’t know much about it, but it seems to need a new rear axle for a disc conversion (studs on drums). I’m having a hard time finding any information that dates back that far. I guess it’s an 8.75, and I’ve been told that it has a 410 ratio. Also don’t know, but have been told it has a DANA 60, whatever that means. It won’t go over 45pmh, and I’ve been told that it needs “taller gears.” Not sure what to put in it, since I don’t know anything about the gearing. I just know that she needs to be able to get on the highway without getting run over. It’s a 4 on the floor, and I would like it to be able to cruise at 80mph, @2000-2500RPM without the truck screaming. Has a 318 V8 with a sticker on the valve cover touting 200HP, so matching the low HP to the proper gearing is going to be a priority.

I’m looking for sound advice, reliable resources, sites to purchase from, referrals, etc. ANYTHING would be appreciated.

By: Cody G

Cody G — Sat, 09 Mar 2019 17:00:11 +0000

Have a 1971 plymouth duster was wondering the biggest rear end that will bolt up with no modifications to the car

By: BigBlockMopar

BigBlockMopar — Fri, 01 Mar 2019 19:12:42 +0000

Juan,
Yes, it is very common to move the springs to gain space for a bigger tire.

Tony,
They most likely sent you the wrong box back.

By: Tony (Allen) Broyles

Tony (Allen) Broyles — Fri, 01 Mar 2019 03:01:34 +0000

I sent my steering gear box off with car quest to rebuild in my 72 roadrunner. When I get it back 2 months later and now it is one inch short.they called me wanted vin number year and model. I think they sent me the wrong one back. Why would it be one inch short and how can I fix the problem. Thank for helping

By: Juan

Juan — Sat, 19 Jan 2019 23:56:33 +0000

Can I move the leaf springs in to allow for wider tire space

By: Paul B

Paul B — Sat, 06 Oct 2018 17:31:49 +0000

I too am looking for a 71 B body dana any for sale

By: JoeCar

JoeCar — Tue, 03 Jul 2018 12:11:06 +0000

Hey hello, i have a question about rear axle for my plymouth satellite 73 400, here i have found a exploded view from the 9-1/4 rear axle. And now my question: what is the best way to separate one side of the housing from the differential. The shaft isn`t in center on the right side and i will disassemble. It would be great become an answer here by the mopar community.