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Thread: 4L60E Rebuild - recommendations?

  1. #1
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    Default 4L60E Rebuild - recommendations?

    Looks like the trans that came with my LS1 for my Firebird needs a rebuild. At a minimum it needs the pump replaced as one of the drive dogs broke off. Since the sponsor list hasn't been updated in 5 years or so and I have been out of the car game for a good 10 years or so, anybody have any shop recommendations? Might as well get it rebuilt while it is out of the car anyway.
    Scott

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    Club Member capone's Avatar
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    Detroit GearBox, LLC dba Bewick Transmission
    5.0
    17 Google reviews
    Transmission shop in Warren, Michigan
    Address: 21279 Groesbeck Hwy, Warren, MI 48089
    Hours:
    Closed ⋅ Opens 9AM Mon
    Phone: (586) 777-4444

    Screen name Detroit Gearbox on here

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    Quote Originally Posted by capone View Post
    Detroit GearBox, LLC dba Bewick Transmission
    5.0
    17 Google reviews
    Transmission shop in Warren, Michigan
    Address: 21279 Groesbeck Hwy, Warren, MI 48089
    Hours:
    Closed ⋅ Opens 9AM Mon
    Phone: (586) 777-4444

    Screen name Detroit Gearbox on here
    X84

  4. #4
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    Quote Originally Posted by capone View Post
    Detroit GearBox, LLC dba Bewick Transmission
    5.0
    17 Google reviews
    Transmission shop in Warren, Michigan
    Address: 21279 Groesbeck Hwy, Warren, MI 48089
    Hours:
    Closed ⋅ Opens 9AM Mon
    Phone: (586) 777-4444

    Screen name Detroit Gearbox on here
    +1. Should be your first call.

  5. #5
    Club Member AutoRoc's Avatar
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    Rich did mine quickly and it's held more power than it should. He did a sonnax performance kit which included a large list of upgrades. Nothing crazy really. No billet parts. He can probably set you up with a converter if your not dead set on a specific brand.
    Denny Villemure
    PSSSSSSST!
    Vortec 4200 Turbo IROC-Z on 15psi
    10.85 @ 126mph

  6. #6
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    Thanks for the info guys! I'll give Rich a call.

    Quote Originally Posted by AutoRoc View Post
    Rich did mine quickly and it's held more power than it should. He did a sonnax performance kit which included a large list of upgrades. Nothing crazy really. No billet parts. He can probably set you up with a converter if your not dead set on a specific brand.
    Hey Denny. I already have a new converter. Went with a PTC 3000 stall 10" converter. Little higher stall than I wanted but since I am cam only I am assuming it will stall a bit lower. I guess we'll see! What rear do you have in your car? I am debating if the stock 26 spline axle will hold up and I can just get away with a gear swap (currently 2.73 gear). I also have a line on a 3.27 geared 9 bolt but it seems like parts are not readily available for this rear. I know the 4th gen 28 spline rears will fit but I want to run the stock wheels so it might look odd since it is wider and i have not been able to track down a 90-92 28 spline 10 bolt yet. My budget was already blown so this trans rebuild is going to add to that so not looking to do an 8.8, 12 bolt or 9 inch.
    Last edited by 2QuickZ's; 08-10-2020 at 01:10 PM.
    Scott

  7. #7
    Club Member AutoRoc's Avatar
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    Take your axle to Rich also. I did a used 3.73 12 bolt from a Motown member. Eaton posi. Paid like $1400?.
    Last edited by AutoRoc; 08-10-2020 at 01:41 PM.
    Denny Villemure
    PSSSSSSST!
    Vortec 4200 Turbo IROC-Z on 15psi
    10.85 @ 126mph

  8. #8
    Club Member AutoRoc's Avatar
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    I'll look and see if I have a 10 bolt laying around. I know I never broke one
    Denny Villemure
    PSSSSSSST!
    Vortec 4200 Turbo IROC-Z on 15psi
    10.85 @ 126mph

  9. #9
    Club Member twotwoturbo's Avatar
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    Quote Originally Posted by capone View Post
    Detroit GearBox, LLC dba Bewick Transmission
    5.0
    17 Google reviews
    Transmission shop in Warren, Michigan
    Address: 21279 Groesbeck Hwy, Warren, MI 48089
    Hours:
    Closed ⋅ Opens 9AM Mon
    Phone: (586) 777-4444

    Screen name Detroit Gearbox on here
    yes hands down! go to him !
    1990 mustang GT 5.0 sold 3-11-04 MISSED

  10. #10
    Club Member 1BADAIR's Avatar
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    What cam did you install? 3000 won’t be bad. A lot of people do 3600 or so cam only
    A gun is like a parachute. If you need one, and don't have one, you'll probably never need one again.

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