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Technical Who makes quality rear end gears?

Discussion in 'The Hokey Ass Message Board' started by Budget36, Jul 21, 2021.

  1. Budget36
    Joined: Nov 29, 2014
    Posts: 6,778

    Budget36
    Member

    Changing some stuff on my kids car and looking to go to 4.11’s for her.
    It’s a GM 10 bolt. I’ve heard tale of “xxx” gears are always noisy, etc. after a weekend of setting them up (yes I’m that slow doing it) I don’t want it to sound like a gear drive filling her;)

    I don’t mind spending $500 on a good set if that’s what it takes.

    Thanks
     
    Last edited: Jul 21, 2021
  2. What are,,,xxx gears ?

    Tommy
     
  3. Budget36
    Joined: Nov 29, 2014
    Posts: 6,778

    Budget36
    Member

    Lol. I didn’t want to mis name a manufacturer and cause a stir. As an example “Zoom gears are always noisy”. I’ve just heard references in that regard-note just using Zoom as an example.
     
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  4. 57JoeFoMoPar
    Joined: Sep 14, 2004
    Posts: 5,023

    57JoeFoMoPar
    Member

    No gear set should make noise if they are set up properly. I have not heard any brand is necessarily inferior to another, though I've never heard of "Zoom" gears at all. That kind of generic brand is likely not on par with a top brand like Richmond or even GM. Even those name brands are nowhere near $500 for a ring and pinion set. If they were, I would take the weak 10 bolt out and put a Ford 9" in instead.
     
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  5. Budget36
    Joined: Nov 29, 2014
    Posts: 6,778

    Budget36
    Member

    Any idea where GM sources gear sets from?
     
  6. 51504bat
    Joined: May 22, 2010
    Posts: 2,889

    51504bat
    ALLIANCE MEMBER

    Don't know brand names but the well versed guy who set up an 8 inch 3rd member for me used gears made in Italy. Said they were very high quality. IIRC he got them from Summit but not 100% positive on Summit.
     
    Budget36 likes this.
  7. At one time Zoom sold a lot of gear sets,,,,,,that was back in the day though .
    Some gears can be noisy,,,,,but they shouldn’t be ,,,,not if made correctly .
    I’ve usually used Richmond myself,,,,,quality gears at a good price,,,,at least back then,,,,things do change sometimes though.

    The bulk of the time,,,it is just improper setup .
    Some guys get carried away with the settings,,,,,and can never quite get it right after that .
    I have seen a few patterns shown here on the Hamb I disagreed with,,,,but others liked and thought they were perfect .
    Oh well,,,,,some guys have gear issues,,,,some have bearing issues,,,,,some just have issues,,,,,LoL .

    The same goes for valve lash as well,,,,LoL.

    For the Chevy 10 bolt I used a few old gear sets,,,,,,I believe they were Zoom .
    A 4.56 was a happening ratio back in the day ,,,,,,a 10 bolt with a pos .,,,,,,like Archie Bunker said,,,,,those were the days !

    Tommy
     
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  8. Budget36
    Joined: Nov 29, 2014
    Posts: 6,778

    Budget36
    Member

    I agree, I’ve set up 5 rearend s in my life, all with used OEM gears, never had a noise. But being older and lasier, I just want to order them and not have to go out hunting for them;).
     
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  9. trvguy
    Joined: Apr 12, 2010
    Posts: 94

    trvguy
    Member

    I put 3 gear sets in my Chrysler 8&3/4 and they were all noisy. Good pattern and backlash.
    all new bearings and shims came from different companies.
     
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  10. trvguy
    Joined: Apr 12, 2010
    Posts: 94

    trvguy
    Member

    mabee OEMs would have been better.
     
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  11. hemihotrod66
    Joined: May 5, 2019
    Posts: 401

    hemihotrod66
    Member

    Got 3,73 Yukon gears in my car and they are quiet and work fine...
     
  12. Dreddybear
    Joined: Mar 31, 2007
    Posts: 6,027

    Dreddybear
    Member

    My coupe has Yukon in the 9". My truck had Pro-Gear and Richmond. I would recommend all of them.
     
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  13. Budget36
    Joined: Nov 29, 2014
    Posts: 6,778

    Budget36
    Member

    Never heard of Pro-gear.
    Thanks
     
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  14. Dreddybear
    Joined: Mar 31, 2007
    Posts: 6,027

    Dreddybear
    Member

    I think they are defunct. They came in a yellow box... it's been 25 years though... For the money I would go Richmond. I put 100k miles on my truck after throwing those in.
     
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  15. Chicster
    Joined: Aug 5, 2018
    Posts: 260

    Chicster
    ALLIANCE MEMBER
    1. Missouri H.A.M.B.ers

    Put a set of Auburngear 3.25 in my 9 in. and for the money have no complaints. Quiet and didn't break the bank.
     
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  16. SEAAIRE354
    Joined: Sep 7, 2015
    Posts: 313

    SEAAIRE354
    Member

    Bought a set of 9”gears in a kit from a well known supplier and were super noisy. I checked everything again made a few changes to no avail. Replaced with a set of US gear. Quite as a mouse. You can see the lapping pattern on the teeth plus they have marking compound on about 10 teeth to reference when you do your setup. I don’t plan on using any other gears unless they go out of business.
     
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  17. 51504bat
    Joined: May 22, 2010
    Posts: 2,889

    51504bat
    ALLIANCE MEMBER

    Just got back from dropping off a rear end housing to the guy who set up my third member. Had to have the perches welded after relocating them. He showed me the paper work from a gear set manufacturer that had printed in red that the gear set was not built to OEM standards but to higher "racing" standards. And they could/would be noisier than stock gears. His take was for normal street OEM type gears where the way to go. For high performance/racing applications the appropriate gear sets may be noisier. Can't confirm any of this but the guy has been doing rear ends for well over 20 years so make your own conclusions.
     
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  18. WB69
    Joined: Dec 7, 2008
    Posts: 1,630

    WB69
    Member

    I've had excellent luck with Yukons also. Absolutely no noise.
     
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  19. Fogger
    Joined: Aug 18, 2007
    Posts: 1,559

    Fogger
    Member

    For my '55 Delray, I installed a 3.08 gear set from Yukon in my original Chevy third member. Quite and appeared high quality. New bearings, proper pinion depth, pattern on ring gear and backlash. Happy with the results and will buy Yukon again.
     
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  20. big john d
    Joined: Nov 24, 2011
    Posts: 238

    big john d
    Member
    from ma

    have been running zoom gears in an off topic drag car ( 10.80 123 )for 23 years with no problem will pull it out to reseal it this winter
     
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  21. Never heard of higher racing standards,,,,LoL,,,,,being noisier .
    Sounds like a load of crap .
    The racing gears I have had were 9310 nickel alloy .
    Different steel,,,,but same quality standards,,,,,no more noise either .
    The 9310 is essentially a softer steel and will take a greater shock before breaking.
    They also wear out quicker on the street ,,,,,because they are soft .

    The gear sets are run in on a lapping machine,,,,,it mates the teeth to one another .
    That’s where the pinion depth measurement comes from .
    Factory gears or aftermarket,,,,they all get run in,,,,,unless someone cuts an operation to save money .

    Tommy
     
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  22. Elcohaulic
    Joined: Dec 27, 2017
    Posts: 2,219

    Elcohaulic
    Member

    The only rear end that never blew up on me was the 58 to 64 Olds Pontiac rear end.. Damn those things are strong! A 500 horse Pontiac 462 couldn't hurt it..
     
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  23. First place I ever got a new gear set installed in a 9" decades ago was a place called Diff Lapping Co. in the city here. They were quiet.

    Just checked, they are still going.
     
  24. The tolerance difference between an AGMA 6 and an AGMA 15 is .0025" with a diametral pitch of 8".
    I would start by asking the gear manufacture to what standard are these gears built to.
     
  25. And yes there is a variation in tooth tolerance, it is possible to sound different
     
  26. Hey 5150 ,
    What gear manufacturer was that on the paperwork,,,,I would like to know .
    Almost all manufacturers will sell crap,,,if you let them .
    Again,,,,I have never heard of any street gear being built to higher racing standards and it be worse quality .
    It just doesn’t compute,,,,LoL !

    Tommy
     
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  27. Sporty45
    Joined: Jun 1, 2015
    Posts: 989

    Sporty45
    Member
    from NH Boonies

  28. Driver50x
    Joined: May 5, 2014
    Posts: 150

    Driver50x
    Member

    I talked to a guy at a rear end shop a while back, and he claimed Mopar 8 3/4” rear ends always tend to be noisy no matter what. I’m not sure why.
     
  29. I bought Strange gears last time, but that was nearly 25 years ago. they were USA made at the time. They guys told me back then that a lot of other name brand gear sets were being made in India. Don't know if that's still the case.
    (BTW a set of Speed Pro pistons I bought last year had 'Made in India' in the not too fine print.)
     
  30. 51504bat
    Joined: May 22, 2010
    Posts: 2,889

    51504bat
    ALLIANCE MEMBER

    When I pick up the housing in a couple of days I'll try to get a picture of the paperwork I was shown.
     
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