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-   -   12 Bolt Differential Cover (https://67-72chevytrucks.com/vboard/showthread.php?t=849849)

truckster 01-12-2024 09:29 PM

12 Bolt Differential Cover
 
I just installed my TrueTrac differential and I noticed the cover is pretty banged up. I've been trying to find a plain black cover, but it seems the stamped steel ones are all chromed and everything else is $100 and more.

Anyone know who sells stock-type 12 bolt covers?

Getter-Done 01-12-2024 09:47 PM

Re: 12 Bolt Differential Cover
 
There was a thread just recently about this.

Here is a old one below.

The links in it may be helpful for new bolts and a gasket.

Because they were great Pics and comments.

I will keep hunting for the other link.

Link: https://67-72chevytrucks.com/vboard/...rear+end+cover

dmjlambert 01-12-2024 10:10 PM

Re: 12 Bolt Differential Cover
 
The best plain cover is an original stock cover. There's probably tons of them in people's junk piles because people replaced rusted ones with chrome ones. You know how many people love chrome. Post a want-to-buy ad in the parts section and see if that uncovers some stock ones.

truckster 01-12-2024 10:18 PM

Re: 12 Bolt Differential Cover
 
Thanks. I've searched pretty exhaustively. I think no one makes them anymore. I might have to buy a chrome one and strip it.

Jason Banks 01-12-2024 10:25 PM

Re: 12 Bolt Differential Cover
 
https://www.ebay.com/itm/335160280114

HO455 01-12-2024 10:54 PM

Re: 12 Bolt Differential Cover
 
I've got a used one in the garage that I don't remember being damaged. Your welcome to it for the ride.

Getter-Done 01-12-2024 11:00 PM

Re: 12 Bolt Differential Cover
 
Another Old Thread.;)

Link: https://67-72chevytrucks.com/vboard/...352&highlight=

Just mentioned some of the same things.

truckster 01-12-2024 11:20 PM

Re: 12 Bolt Differential Cover
 
Quote:

Originally Posted by HO455 (Post 9276025)
I've got a used one in the garage that I don't remember being damaged. Your welcome to it for the ride.

Thanks. PM sent.

MikeB 01-13-2024 04:31 PM

Re: 12 Bolt Differential Cover
 
I hate that so many aftermarket stamped steel parts are chrome plated.http://67-72chevytrucks.com/vboard/i...ons/icon13.gif Brackets, master cylinder caps, breathers, and many more.

70STOVEBOLT 01-14-2024 12:48 AM

Re: 12 Bolt Differential Cover
 
Quote:

Originally Posted by MikeB (Post 9276215)
I hate that so many aftermarket stamped steel parts are chrome plated.http://67-72chevytrucks.com/vboard/i...ons/icon13.gif Brackets, master cylinder caps, breathers, and many more.

If there was a high quality chrome plated master cylinder cover, I would buy it. I hate that the zinc plated ones rust as soon as they are installed. Otherwise I agree with you.

special-K 01-14-2024 11:38 AM

Re: 12 Bolt Differential Cover
 
Aftermarket chrome ones aren't as heavy, but if I couldn't find an OEM I would sandblast a chrome one and paint it black

MikeB 01-14-2024 12:00 PM

Re: 12 Bolt Differential Cover
 
2 Attachment(s)
Quote:

Originally Posted by 70STOVEBOLT (Post 9276433)
If there was a high quality chrome plated master cylinder cover, I would buy it. I hate that the zinc plated ones rust as soon as they are installed. Otherwise I agree with you.

Yes, the gold-colored ones start corroding right away. Same with brake boosters. Someone once told me it has to do with the process and materials used, compared to how the manufacturers did it.

I used a Wilwood aluminum M/C on a car I used to have. Looked nice for years and worked very well.

The booster and cap on the right are around 2 years old, if that.

Wilwood aluminum on the left. Screw-on cap is nice too.

70STOVEBOLT 01-14-2024 01:22 PM

Re: 12 Bolt Differential Cover
 
Quote:

Originally Posted by MikeB (Post 9276502)
Yes, the gold-colored ones start corroding right away. Same with brake boosters. Someone once told me it has to do with the process and materials used, compared to how the manufacturers did it.

I used a Wilwood aluminum M/C on a car I used to have. Looked nice for years and worked very well.

The booster and cap on the right are around 2 years old, if that.

Wilwood aluminum on the left. Screw-on cap is nice too.

I clear coated my m/c and the cover. It looks decent, but the truck has not been driven since, so I don’t know how it will hold up.

truckster 01-14-2024 04:14 PM

Re: 12 Bolt Differential Cover
 
Quote:

Originally Posted by 70STOVEBOLT (Post 9276527)
I clear coated my m/c and the cover. It looks decent, but the truck has not been driven since, so I don’t know how it will hold up.

I clear coated the gold-colored cover on my MC when I installed it three years ago. It still looks like new.

MikeB 01-15-2024 12:38 PM

Re: 12 Bolt Differential Cover
 
Quote:

Originally Posted by truckster (Post 9276572)
I clear coated the gold-colored cover on my MC when I installed it three years ago. It still looks like new.

That's good to hear. I've used cast iron-colored paint on an M/C before and it held up fairly well. Problem is almost no paint likes brake fluid!

68Gold/white 01-17-2024 12:08 PM

Re: 12 Bolt Differential Cover
 
I think the 12 rear ends last production was in 1982?

Still some in salvage yards........some

HO455 01-28-2024 09:42 PM

Re: 12 Bolt Differential Cover
 
3 Attachment(s)
Quote:

Originally Posted by truckster (Post 9276032)
Thanks. PM sent.

I found the cover. It's pretty good but not pristine. A bit of time with a hammer and a oak round would clean it up pretty well. Let me know.

truckster 01-28-2024 10:02 PM

Re: 12 Bolt Differential Cover
 
Looks good to me.


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