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post #1 of 3 (permalink) Old 04-09-13, 11:56 AM Thread Starter
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1977 f150 custom, couple mechanical issues

Hey, first post, probably not the last! I just bought a 1977 f150 ford with a 460 big block in it. the rear main seal is completely shot, and almost ended up driving it home with no oil by the time I got on my street. gonna take it down to a shop to see about fixing it asap. But the problem I'm not too sure about is its got a loud clicking noise coming from the REAR end when I turn. Its a slow sound, it sounds exactly like I have a piece of metal hanging and every time the wheel turns that metal hits another piece of metal. that's just a description of what it sounds like. I got a buddy to check it out behind me while I went in a circle, and he says it sounds like its coming equally from both sides of the truck. Just wondering what it could be. Thanks!

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post #2 of 3 (permalink) Old 04-09-13, 02:31 PM
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Re: 1977 f150 custom, couple mechanical issues

Is the rear end posi? Also, check fluid level.

Ever notice that there's so many high performance parts available for GM products?

Did you ever think that maybe they NEED them?
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post #3 of 3 (permalink) Old 05-15-13, 10:44 AM
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Re: 1977 f150 custom, couple mechanical issues

Sounds like a Detroit Locker, kind of a ratcheting noise when turning (while light throttle or coasting). "click click click". If you give a little gas while turning it will lock and on drive pavement will chirp the tires a little as they are now spinning the same speed. Or you can jack up the rear, put the truck in neutral and try the locker test, look on youtube for this.


Many times a Detroit Locker will be put in a nodular third member. If there's a big N on the third member housing, it's a nodular. These are beefier units.

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