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A decent score?

Discussion in 'Got gears?' started by Bygblok, Nov 22, 2021.

  1. Bygblok

    Bygblok Well-Known Member

    I’ve been looking to update the rearend in my 66 special and kept looking at $3k+ prices for anything I came across. Decided to hit the swap meet in Moultrie Saturday to look some more. A buddy of mine saw a post about us going and what I was looking for and it turns out that another friend had a built 10-bolt from a 65 cutlass that had an Auburn posi and a 3.90 gear in it with just a few miles on it since he installed it. He decided it was too much gear for him and went to another complete rearend with a 3.31. I’m using a 4L60e so the 3.90 is perfect for me! Best part about it…………..$350 for the whole thing. Another puzzle piece put together!
     
  2. BYoung

    BYoung Stage me

    Nice! Did you see anything “Buick” at Moultrie? I stopped going because as much fun as it was to look at everything, I never could find anything for a Buick.
     
  3. Bygblok

    Bygblok Well-Known Member

    Not really much for the Buick purist’s there. I’m in a little different spot because pretty much the only thing Buick on mine is the body and frame. Everything else has been changed from the motor/trans to the suspension and on to brakes. Restomod is fun but pretty challenging at times! We had wanted to go to Daytona this coming weekend for the Turkey Run but it appears that our grandsons first thanksgiving put that on hold for at least a year!
     
  4. BrianTrick

    BrianTrick Brian Trick

    Where are you looking at $3k+ rearends? Jim it myself can fill the bill for almost half.
    Take that $350.00 rearend and inspect and go through. It’s much easier when it’s out of the car. Check the pattern on the gears. Check to see if the bearings & seals have been replaced recently. Stuff like that.
     
    charlierogers and 69GS430/TKX like this.
  5. Bygblok

    Bygblok Well-Known Member

    It’s all fairly new internally Brian. I’ve been in the car it came out of also and it’s quiet and no vibration, put together with quality parts. I’ve been looking at 12-bolts and 9” rears which we’re going to be in the $3k range by the time I got it all done. I felt this was a pretty smoking’ deal for $350.
     
  6. Bens99gtp

    Bens99gtp Well-Known Member

    350 is a great deal for even just the housing, posi, and gears.......if you had to have all new bearing in its still a good deal
     
  7. Briz

    Briz Founders Club Member

    I went last yr for all 3 days. It takes that if you really dig through all the vendors. What helps me... I have a wagon to drag around on the search and a sign sticking up on a stick that reads "Got Buick" then in smaller writing the cars Im working on. Have had guys approach me and tell me they got what I want.
     
    Bygblok and BYoung like this.
  8. BrianTrick

    BrianTrick Brian Trick

    If you got to ride in the car to see/hear it work,that is good. Otherwise you are buying a chance as with any used mechanical part. How much power do you plan on throwing at it?
     
  9. Bygblok

    Bygblok Well-Known Member

    Initially it’ll just be the N/A 5.3/4L60e with around 350-375rwhp. Once the bugs are worked out of the car I’ll put the turbo on it and this motor made mid-500’s on 8psi with the small 66mm. I’m putting my billet wheeled 76mm on it at 13-14 at some point but hope to have a 9” with around a 3.00 gear in it then. This will be a few years and I might really enjoy the car with the N/A motor but it’s built for artificial air so why not! lol
     
    FLGS400 likes this.
  10. BrianTrick

    BrianTrick Brian Trick

    The rear should hold up fine unless you really hit it hard. It’s not so much the HP that kills them. It the blunt force that is thrown at it initially,like torque,Tran-brake,clutch,slicks,etc.
     
    Bygblok likes this.
  11. monzaz

    monzaz Jim

    I have a 5.7 True LS motor in a Extreme and it still has the 7.6 stock rear and a Yukon posi 3.73 gears. I run it with slicks at the track only 305 HP and 295 torque it is only a 212 duration comp cam but MAn it is FUN to drive! that 295 ft lbs is across the full range of RPM 2000 -6000
    12.80 in auto no manual shifting.
    A/C also
    700R4
    2000 stall B&M torque master cheapo converter
    JUST great for JD Race delivery truck....lol.
     

    Attached Files:

  12. Bygblok

    Bygblok Well-Known Member

    My buy just got better today! Turns out it’s a 65 Cutlass housing and I gained a full inch overall on my tire clearance. Now I can do my rear disc conversion and not worry with tire clearance issues! This could be the best three-fifty I’ve spent on the car in a while!!
     
  13. monzaz

    monzaz Jim

    Yep - 1964 and `65 are narrower. Now did you get the Buick or the Pontiac housing?
     
    Last edited: Dec 14, 2021
  14. Bygblok

    Bygblok Well-Known Member

    I’m not sure which it is Jim and honestly don’t know what to look for. It was originally under a cutlass f-85 and he put the posi and gears in it.
     
  15. monzaz

    monzaz Jim

    always pictures. ARE the casting numbers on the BOTTOM of the housing center section facing the ground? If so it is a PONTIAC 8.2
     
  16. monzaz

    monzaz Jim

    Being an F85 likely has a BUICK weaker 8.2 in it. Performance ones were the Pontiac rears Thicker caps Bigger cross shafts for the spider gear system.
     
    Bygblok likes this.

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