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Unread 03-01-2009, 08:56 PM   #1
Grape Ape
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1975 j20 need some info.

I have come across a decent deal on a j20. I have a few questions. I have looked in my books and have found some good info. I know the J20 has a full floating rear and disc front brakes. Motor could be either a 360 or a 401. The axles are 8 lugs. It is an automatic. Didn't pay much attention to floor just assumed after looking at front axle it was 4x4 so didn't notice if it had a floor shifter or it is a quadratrac.

Questions.

What are the axles, are they d44 or are they d60's? or maybe 44 front and 60 rear?

Is there any way to tell what the motor is by just looking at it? I have read the 360 with 2 barrel carb is standard and they come with a 360 and a 401 with a 4 barrel as options. I didn't think to pull the aircleaner while looking at it. There are a few stickers on the air cleaner but nothing that has any info on the motor actually the stickers are pretty worthless for anything not evne a number that I could get off of them to cross reference.

Any info is appreciated.

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Unread 03-02-2009, 11:40 AM   #2
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Axles:

Dana 44 Front
Dana 60 Rear

Engine:

VIN code would tell you but the best way to find out is looking at the block by the engine mount, this picture is from under the rig:

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Unread 03-02-2009, 01:35 PM   #3
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How much work to swap the axles to a YJ. Is this along the lines of the 79 f-250 or will it be different?
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EVERYBODY is pro-gun, some just don't know it. When an anti-gun person is in trouble, the first thing they do is call 911 and demand that they send somebody with a gun!

We've idiot proofed the world... now its full of idiots. - Spiritof76

You will truly be the same today as you will be five years from now, except for two things, the people you meet and the books you read. Charles E. Jones

I think I'll add some memorable quotes. blah blah blah..... FPKites

Trying to understand some people, is like trying to pick up a turd by the clean side.
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Unread 03-02-2009, 04:31 PM   #4
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The axles are going to be superwide for a YJ but if this is what you are trying to accomplish, the front should be easy and you would have to weld new perches on the rear.
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