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  1. 64tempestwagon
    Aug 15th, 19 3:14 PM - permalink
    64tempestwagon
    Hi I see in the Chevelle Forum you have rear end rebuild knowledge. I have a 2.56 10 bolt in a 64 Tempest and want to put in 3.36 gears. What is the best way to do this? Meaning I have a stock 1967 Lemans 3.36 posi axle complete I bought for $700. I could throw that in there but the rear end is 1 inch wider. So my 255/60/15 Radial TAs might rub. If I was to "build" the stock 1964 rear end in the car what is the best way to do that? Stock gears? Stock posi? or after market stuff on Ebay?
  2. SupraStore
    Jul 22nd, 18 3:13 AM - permalink
    SupraStore
    Freddie,

    You don't know me from Adam, but I'm starting with you as someone said talk to Freddie at the Chevelle forum. I have a 71' El Camino that were doing a motor/trans swap on. Test fitting now. I need to think about the rear-end solution. It's a 10 bolt rear now and and the car will make about 750hp at the wheels from a Toyota 2JZ motor single turbo and a 6 speed manual box. It's just a fast street car, no hard launches, but it needs to hold the power. Torque around 550 ft.lb.

    I'm looking for a turnkey rear-end (posi) solution with axles, mounts for the 71, and set-up for Wilwood brakes. I can buy direct from Wilwood with a deep discount, but if it makes sense to do everything I will through one person. I'm naturally thinking Ford 9" but not married to it.

    Serious buyer and doing the legwork now, so our guys don't have to re-invent the wheel when it's time to address the rear end. I'd like your opinion and cost ideas.

    Mark
    Gilbert, AZ
  3. TimP
    Jul 15th, 17 7:08 AM - permalink
    TimP
    Thanks!
    I was lucky enough to find a very clean, complete 12 bolt locally for $800 The only problem was it had a set of 4.88 gears in it with a spacer for the 3 series carrier. I'm building a cruiser so I picked up a set of 3.42 gears and have a local guy setting up the gear set. Hopefully it will be done today.

    I'll save the old 12 bolt housing for a spare or trading material.

    Tim
  4. TimP
    Jun 9th, 17 11:46 AM - permalink
    TimP
    Part 2
    Is the housing worth saving? Do I need to get in there with a cutting torch to remove shaft to access the C clips to pull the axles in order to remove the carrier? If I do that can you give me an idea on cost to buy a new carrier, bearings and ring & pinion. I don't really want to set up the gears myself, having never done that. I'm in the Chicago area and suppose I could find a shop to do the work locally. You are 405 miles from me so it would be possible to toss the whole thing in my other car and drive it down to you if needed.

    The El Co is just a street cruiser, small block & automatic, so no super HD rear end in needed.

    So..... Try to save it or scrap it and hope for a good used one?

    HELP!!

    Thanks, Tim
    708-927-5223 if you wish to call......thanks again.
  5. TimP
    Jun 9th, 17 11:43 AM - permalink
    TimP
    Tom, I've been reading a lot of 12 bolt threads and you seem to be the man with the answers. I need some advise.

    I've got a 71/72 Eaton 2.73 rear end in my 68 El Camino. The only reason I opened it up was to replace a bad axle seal. I was a FE/ brake mechanic for 30+ years starting in 1970, so I'm familiar with the problem I've run into, but never quite this bad.

    The pin holding in the spider gear shaft was broken. With much effort I was able to retrieve the piece and the hole for the bolt is clear to the other side of the carrier, but the shaft seems to be galled inside one of the spider gears. I can move it in and out about 1/4 inch but that's it. An air chisel refuses to push the pin out further. When the pin is centered I can move it with finger pressure, but just that 1/4 inch or so. I can see one of the spider gears move up & down with the pin near the end of the play. A assume the pin dug some grooves inside the gear, stopping the removal of the pin.

    Part 1
  6. charbilly2001
    Jan 18th, 16 9:21 PM - permalink
    charbilly2001
    I put the postal money order in the mail today. No pickup till tomorrow however.

    Bill
  7. charbilly2001
    Feb 6th, 15 12:16 PM - permalink
    charbilly2001
    Freddie,

    Friend of mine has a beautiful 1967 442 convertible with a 3.08 gearset. He wants me to install a brand new 3.55 GM factory gearset. Any conflict there with the housing or carrier or is it a straight forward change? The kit he has, which is still in the original GM box has everything except the crush spacer.

    Thanks,

    Bill
  8. 70CHEVELLE396
    Jun 29th, 14 8:28 PM - permalink
    70CHEVELLE396
    Hi, I have seen you mentioned often on the site whenever rear differential questions are asked. If you don't mind I'd like to let you what I have and see if you have any suggestions. I bought a new moser 12 bolt housing (before I heard you were a dealer) with bolt in 33 spline axles. My next purchase is a diff. I am pretty much decided on an eaton clutch posi. I see that moser offers a 33 spline eaton, and I have also seen what Tom's differentials has to offer. As much as I like his tuned and polished units they aren't cheap. The moser setup is about half the cost. I'm wondering what you may have to offer and or any suggestions. I tend to be drawn to the higher end quality products, even though my application doesn't always demand it. Also anytime I can get something that's made in the USA it goes a long way with me. I have 70 chevelle 396 street car, that may see a few trips down the strip. Thanks for any info and suggestions.

    Dave
  9. Dble07
    Jun 4th, 13 12:30 PM - permalink
    Dble07
    So if my Yukon had green springs does that mean they are 200#? Is there a specific reading that an individual spring would show at installed height(like you would do to check valve springs)? I called Yukon and they said they don't normally install green springs in their units but they verified(from casting marks) that this unit was one of theirs. Would the 400s be better in a street/strip big block chevelle or can I get by with the 200s?
    My #(618)530-1686 if that would be easier. Thank you for your assistance sir.
  10. Dble07
    May 30th, 13 10:39 PM - permalink
    Dble07
    Hi Freddie. From what I've been reading you're the man on rear ends. I'm in the process of rebuilding the 12 bolt. The posi carrier was pretty tore up so I found one that a buddy had but had never used. The unit i believe is a yukon and has green springs(#200) but my old eaton weren't painted so I'm not sure what pressure they are. I want to make sure the unit has #400 springs in it before in gets put back together. Is there a way to test the old springs to verify what pressure they are?
    Thanks, Nick

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Sep 4th, 19
7:05 PM - -SS454- quoted big gear head in post Re: New 12 bolt and 3.91 gear... seems noisy
The noise is from the gears. The d...
Sep 2nd, 19
5:40 PM - eagleguy quoted big gear head in post Re: 3.31 peg leg rear swap
You are already at the limit for w...
Sep 1st, 19
11:03 AM - -SS454- quoted big gear head in post Re: New 12 bolt and 3.91 gear... seems noisy
Photobucket got their tag right in...
Aug 27th, 19
5:05 PM - -SS454- quoted big gear head in post Re: New 12 bolt and 3.91 gear... seems noisy
That looks pretty good. Is this th...
11:40 AM - -SS454- quoted big gear head in post Re: New 12 bolt and 3.91 gear... seems noisy
Probably not set up correctly. ...
Aug 25th, 19
12:31 PM - Bradco quoted big gear head in post Gear and Pinion Change
No, that wasn't it. I'll try to fi...
11:14 AM - Bradco quoted big gear head in post Gear and Pinion Change
I bought a tool off of ebay that w...
5:17 AM - kanij0 quoted big gear head in post Bad sounds left rear wheel
The spring plates inside the Dura ...
Aug 24th, 19
4:35 PM - LaVelle quoted big gear head in post Re: Posi units.
For which rear end? Assuming you a...
1:43 PM - kanij0 quoted big gear head in post Bad sounds left rear wheel
You have a Chevy car 12 bolt 8.875...
12:55 PM - kanij0 quoted big gear head in post Bad sounds left rear wheel
Your axle is junk and must be repl...
Aug 21st, 19
7:13 AM - hydro462 quoted big gear head in post Re: Differential and Transmission upgrade
You need a '64 to '67 A body rear ...
Aug 19th, 19
6:45 PM - DwadeCham quoted big gear head in post Re: Rear Axle Code
That is the 8.2 10 bolt. Someone g...
9:40 AM - DwadeCham quoted big gear head in post Re: Rear Axle Code
If the rear end hasn't been change...
Aug 18th, 19
10:48 PM - 71350SS quoted big gear head in post Re: Gear and Pinion Change
This WILL NOT WORK when changing t...
5:37 PM - big gear head quoted 71350SS in post Re: Gear and Pinion Change
You can mark the nut and the...
Aug 15th, 19
4:33 PM - fr8dog quoted big gear head in post Picked up a 12 bolt today
Looks like mono leaf spring perche...
Aug 12th, 19
10:34 PM - ChevJerico quoted big gear head in post Proform 12 bolt diff cover have good oiling?
Moser cover is made by TA Performa...
11:50 AM - ChevJerico quoted big gear head in post Re: Proform 12 bolt diff cover have good oiling?
Yeah, those Ford bearings don't re...
Aug 11th, 19
5:39 PM - joes69 quoted big gear head in post Re: going from narrowed rear to stock rear
The suspension isn't a problem. My...
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