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    Freddie- Do you sell Eaton posies, gears, and installation kits? Looking for a setup for an 8.5 10 bolt. If you do, let me know how to contact you. Tks.

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    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?

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    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

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    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

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    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.

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    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

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    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

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    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

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    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.

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    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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    8 Posts
    I am debating to put Posi and 3.73 gears on the rear end. Is 3.73 gears the correct ones to use? And should i put 3.73 gears and not make it Posi? Any information would help.
    350 motor, 300 HP. 700R trans, 17 or 18 inch wheels. Not looking to race, just cruising and once in a while step on the gas at red lights, etc. Thanks for any help.

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    Hi Freddie,
    Looking to rebuild my 12 bolt rear end this fall. How much do you sell the deluxe rebuild kit with everything including the wheel bearings and seals for? I want everything made in USA and comparable to JEGS Performance Products #555-61229. My rear is a 12 bolt 3.31 posi original to my car. Never been touched before. My gears look good but I have a whine on deceleration that I think is coming from the pinion.

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    hi freddie you seem to be the rear end expert on this forum i bout a eaton true trax carrier for a 10 bolt and trying to reuse my gears. the guy that was in the rear end before me did not do anything right pinion depth was incorrect there was excessive backlash due to no preload or even tightness on the carrier bearings so needless to say im having trubles setting up these gears i got a few questions for you 1. how much backlash do you put into used gears? i have .0085 right now... 2 . at .036 pinion shim the coast side looks great couldent get a better patern but my drive side just has a little triangle at the toe of the gear with the longest side of th trangle being at the root of the tooth at a .027 pinion shim my drive side has a good patern on it but the coast side has a little triangle on it with the longest side of the triangle being at the top of the tooth i wish i took pictues of all the things iv done to it but dint any help would be greatfull thank you

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    Freddie, Your name keeps popping up on the web for someone to order parts from to rebuild my Eaton series 3 posi. Can you help. How do I get in touch with you, #? I need clutches, Spider gear washers, springs and plates. Thanks, David 205-540-1371

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    freddie after installing my new gear i am getting a small vibration only when i kick it up in neutral around 55 or so not a growling sound but i can see it in mirror and feel it ever so slight ,,its a 12 bolt 373 rich i showed a pic of the pattern,,bl is 009,,any ideas,,jeff wanting to drive it to cb10

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    66 Posts
    Freddie,
    To complement the parts i've alreay purchased from you, i'd like to run the moser housing ends that accept the big for bearing. This will again be for my 12 bolt on my 71 chevelle. Can you price out those ends for me? I've been told there are a couple of different ends i can get and i'm not sure which one is best for my needs. I assumed you'd know since you are the YODA of the chevelle community.
    also;
    I was thinking about narrowing the rearend 1 inch on each side because i'll be mini tubbing this car now. i was told this would make the rearend the same width as the earlier chevelles. With that being said, are the axles for this application something that moser stocks i.e: early chevelle axle intended for for bearing? If so, can you price that for me too. Thanks again freddie.

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    Hello Dave P told me to get with you for a 12 bolt master install kit and wheel bearings. Do you accept paypal or money order?
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