1970 GS455 Stage 1 "Bimbo"

Discussion in 'Members Rides' started by JesiM, May 16, 2018.

  1. buick64203

    buick64203 Just plum crazy Staff Member

    As a comparison, here's the sheet from my Stage 1 4 speed. I got lucky and the sheet is actually from my car. Says 4637 which is GS-455. And M20 which is for the 4 speed

    JesiM and Stage 2 iron like this.
  2. JesiM

    JesiM Well-Known Member

    Wow!! That is awesome!!

    So why would the wrong sheet for the car be in the seat? Just thrown in there from another build?
  3. Brett Slater

    Brett Slater Super Moderator Staff Member

    It's very common to find the wrong build sheet/broadcast sheets in these cars.

    Auto workers liked to drink and the assembly line never stopped. Haha!
    JesiM likes this.
  4. Dano

    Dano Platinum Level Contributor

    That's pretty awesome if it was originally equipped with disk brakes and a Rallye Steering wheel on a base interior 4-sp car. I guess we'll know once Mike sends you the Wayne Roberts.
    PGSS and JesiM like this.
  5. hugger

    hugger Well-Known Member

    I wouldn't hold my breath on waiting on a Roberts report
  6. JesiM

    JesiM Well-Known Member

    I was looking at the rear diff cover on this and mine has a 10-bolt on it. I can't find the article I was reading that talked about the rear end options. Can anyone help me with what rear end I have in the car?
  7. Dano

    Dano Platinum Level Contributor

    You just have to be able to hold it like a Navy Seal:). Fortunately, Mike Sobotka already has one on Jessi's car that he's sending to her.
    JesiM likes this.
  8. Dano

    Dano Platinum Level Contributor

    You should have an 8.2" 3.64 posi. There are pics on doing a quick ID (try http://www.buickperformanceclub.com/axles.htm), but once you determine it's an 8.2, on the botttom of the housing on the axle tube there will be some stampings. Could be on pass. or driver's side, despite that it's "supposed" to be on pass side. The two letter code (Should be QO for '70 3.64). If you look closely and being that your car is low. mi. & has been parked for so long, on the bottom of the differential housing, you may see remnants of yellow paint, which is where the "QO" was stenciled on for assy. Plant ID.
    gsgnnut and JesiM like this.
  9. Brett Slater

    Brett Slater Super Moderator Staff Member

    10 volt 3:64 posi. The code will be "ON" and should be located on the bottom of the (I think) passenger's side axle tube.

    Wire brush the hell out of it.
    JesiM likes this.
  10. JesiM

    JesiM Well-Known Member

    OK, so i'll have to do some cleaning before I can identify the rear diff. I thought I had read somewhere that there was either a 10bolt option, or there was a Chevy 12 bolt and an Olds 12 bolt.
  11. Brett Slater

    Brett Slater Super Moderator Staff Member

    Isn't the code "ON"?
  12. Brett Slater

    Brett Slater Super Moderator Staff Member

  13. JesiM

    JesiM Well-Known Member

    I think I need to invest in wire brushes :p
    GS464 and Brett Slater like this.
  14. Dano

    Dano Platinum Level Contributor

    Yes, sucks getting old. I knew I should've looked it up. QO is the code on Square D circuit breakers I'm using wiring up the shop.
    Doug Hoyle likes this.
  15. Brett Slater

    Brett Slater Super Moderator Staff Member

  16. PGSS

    PGSS Well-Known Member

    I believe the Canadian built GS's had the Chevy 12 bolt and this could be a rare thing but if the the US plants were out of the stock 10 bolts they might of gotten the 12 bolt Chevy?? The Olds 12 bolt weren't a true 12 bolt, only the cover had the 12 bolts.
    Last edited: May 19, 2018
    JesiM likes this.
  17. 70skylark350

    70skylark350 Well-Known Member

    very cool car. My 70 was my grandmothers car since December 1969. I grew up riding to the mall with Nan in my Buick. Its part of the family for sure, although I wish pap had bought her a big block, four speed, Stage 1......
    turbotimmer, Dano and JesiM like this.
  18. rkammer

    rkammer '71 GS455 Arctic White

    Easily rectified. Just remove and store the 350 motor and drop in a 455 in front of the Turbo 350. Voila. :D
    70skylark350 likes this.
  19. Mike Sobotka

    Mike Sobotka Founders Club Member

    I have the report. Just need to get home so I can send it to Jesi.
    JesiM likes this.

    STAGE III Lost Experimental Block

    I didn't think I would ever say this to a chick but Jesi? "We have the same rearend" o_Olol

    1970 8.2 3:64 posi that is!

    Lying under the car the code is stamped on the *Edit* DRIVERS side axle tube facing down towards the ground.
    Then if you get lucky too on the bottom of the center section of your rear ,again facing the ground you MIGHT find in large yellow letters "ON". Here are mine.
    Good luck kiddo:)

    IMG_4981.jpg IMG_4980.jpg

    Attached Files:

    Last edited: May 19, 2018

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