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post #1 of 23 (permalink) Old 08-27-2009, 02:28 AM Thread Starter
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Score!!!

I scored a 12 bolt rear for my 66 Caprice today for $175. Drum to Drum. It even has the dual upper control arm mounts on it which my car has a dual UCA 10 bolt right now, so that worked out great.

1966 Caprice project
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post #2 of 23 (permalink) Old 08-27-2009, 07:24 AM
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U lucky dog!


....you always up at 2:30 in the morning???

HOW A NOVICE REBUILDS A 66 IMPALA CONVERTIBLE:
http://www.impalas.net/forums/blog.php?u=1432
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post #3 of 23 (permalink) Old 08-27-2009, 01:27 PM Thread Starter
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Yep, I have a 2nd/3rd shift mentality. Plus I didnt really have the money to buy the rear but I couldn't pass it up, so I was up posting "for sale" adds to parts I dont need, to recoupe my money. Know anyone that needs 66 Caprice AC stuff?

1966 Caprice project
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post #4 of 23 (permalink) Old 08-27-2009, 01:43 PM
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Great find at a phenomenal price. (just the empty housing is worth $500 bucks where I live) So post the code numbers and give me a clew as to year it was installed in to find out what gears it left the factory with.

Big Dave
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post #5 of 23 (permalink) Old 08-27-2009, 03:10 PM Thread Starter
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Casting- 3894860NF
axle- FM 0310G2
Date-b269
Other codes- GM57 and CON 1

The guy I bought it from said it was a 3.08 open but I did find the "FM" code in different years meant 3.73? He had another 12 bolt in his car so I guess its possible he swapped the internals to the other housing?

1966 Caprice project
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post #6 of 23 (permalink) Old 08-27-2009, 03:54 PM
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There was no FM in 1969 (your date code of Feb 1969) it must be an EM. It is a good score because it is a Heavy Duty BBC open rear end with 3.07:1 gears. It was made by Detroit Gear. What is inside the case I have no idea now.

Big Dave
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post #7 of 23 (permalink) Old 08-27-2009, 06:43 PM Thread Starter
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Thanks Dave.

Yep, it is a 4 arm housing. Which is great because my car is a 4 arm car, OE 300hp 327 car. Too bad I dont have the original motor though. I popped the back cover off real quick and its definitely an open and I counted 44 teeth on the ring gear.

1966 Caprice project
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post #8 of 23 (permalink) Old 08-27-2009, 11:48 PM Thread Starter
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Dave, Ok I rechecked my stuff, you are correct, it was an "E" and I recounted my gear teeth and they are 43 and 14 which is a 3.07. So I guess its safe to assume that it may be the stock internals also.

Thanks for the info

1966 Caprice project
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post #9 of 23 (permalink) Old 08-31-2009, 06:43 PM
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If you find another one like that let me know!!!! I want to get one for my 67'. I found some Chevelle 12-bolts for $150 around here

Dallas
1970 Camaro:

1988 Ford F350 Dually: It HAULS! Literally

1987 Iroc- LS1/T56 swap- sold

1967 Chevrolet K10- lifted, locked, 33's, OD Green- sold
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post #10 of 23 (permalink) Old 08-31-2009, 08:19 PM Thread Starter
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Crazy part is, it was on Craigslist fro about 10 days. I called for the hell of it figuring at that price it was long gone. I was shocked he still had it.

I degreased and painted it today. I'll post some pics later tonight.

1966 Caprice project
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post #11 of 23 (permalink) Old 08-31-2009, 10:08 PM
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Dave, you can put those Chevelle rears on the chevelle site and make a good profit.
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post #12 of 23 (permalink) Old 09-01-2009, 02:42 AM Thread Starter
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Here's some before, during, and aftre pics. The paint I used ia called Rustoleum Hammered Black. Its the brush on style. IMO the rattle can hammered paint sucks. I've done a few housings with this stuff and everybody swears it powdercoated.








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post #13 of 23 (permalink) Old 09-01-2009, 02:45 AM Thread Starter
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This is after a thorough wire brushing scraping and degreasing. It's amazing how fast the cast center flash rusts!!! I mean, it's matter of just a minute or 2.






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post #14 of 23 (permalink) Old 09-01-2009, 02:49 AM Thread Starter
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This is all painted up with the previously mentioned Rustoleum Hammered.

I'll do the brakes another day. I'm just gonna rattle can them though.

The cover i'll do a different color, probably a silver/gray/aluminum of some sort. I dont like covers that match the housing. Eventually it will get a girdle.












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post #15 of 23 (permalink) Old 09-01-2009, 03:44 PM
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Looking good!

Dallas
1970 Camaro:

1988 Ford F350 Dually: It HAULS! Literally

1987 Iroc- LS1/T56 swap- sold

1967 Chevrolet K10- lifted, locked, 33's, OD Green- sold
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post #16 of 23 (permalink) Old 09-01-2009, 05:42 PM
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looks great man, good job! I learned me something today!

HOW A NOVICE REBUILDS A 66 IMPALA CONVERTIBLE:
http://www.impalas.net/forums/blog.php?u=1432
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post #17 of 23 (permalink) Old 09-10-2009, 01:36 PM Thread Starter
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SCORE #2

I got another 12 bolt for $225 for a friend of mine. Can you decode the axle #s for me.

This is also I believe to be a HD rear because it also has the dual UCA mounts.

Axle- GA0107G

Center- 3852980n

date- L305, which I believe means December 30, 1965. I was told the rear was out of a 66 SS Impala. With the late 65 date code I would think the rear did end up in a 66 model.

It has a open diff with a 3.07

1966 Caprice project
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post #18 of 23 (permalink) Old 09-10-2009, 02:54 PM
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I'm jealous!
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post #19 of 23 (permalink) Old 09-10-2009, 04:00 PM
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Quote:
Originally Posted by BrianJ View Post
SCORE #2

I got another 12 bolt for $225 for a friend of mine. Can you decode the axle #s for me.

This is also I believe to be a HD rear because it also has the dual UCA mounts.

Axle- GA0107G

Center- 3852980n

date- L305, which I believe means December 30, 1965. I was told the rear was out of a 66 SS Impala. With the late 65 date code I would think the rear did end up in a 66 model.

It has a open diff with a 3.07
I've got some bad news, and some good news.

First the bad news: it is a 1965 Chevelle rear end. Now the good news: it is a HD Z-16 12 bolt rear end out of a 1965 Chevelle. The Z-16 is the rarest car option on the planet. That rear end is probably worth it's weight in gold. To get an idea how much it is worth ask this same question over on Team Chevelle.

Big Dave
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post #20 of 23 (permalink) Old 09-10-2009, 04:15 PM Thread Starter
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So the 65 Chevelle rear end has mounts like a Impala. This has the parallel UCA mounts like a Impala, no ears on the center like a typical Chevelle. I'll go take a pic and post it. Give me a second

1966 Caprice project
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post #21 of 23 (permalink) Old 09-10-2009, 04:35 PM Thread Starter
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1966 Caprice project
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post #22 of 23 (permalink) Old 09-10-2009, 04:49 PM Thread Starter
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1966 Caprice project
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post #23 of 23 (permalink) Old 09-10-2009, 06:43 PM Thread Starter
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I dont think its a Z16 rear. I think it must be an Impala rear that just coincidently got the "GA" code. From the research i've been doing, the Z16 rear used cut down Impala axle tubes because they were heavier duty than the standard Chevelle tubes. I would assume a bigger wall thickness.

1966 Caprice project
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