350 internal sfi flexplate

Discussion in 'Small Block Tech' started by Mart, Jul 1, 2021.

  1. Mart

    Mart Gold level member

    Attached Files:

    Last edited: Jul 1, 2021
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  2. Dano

    Dano Platinum Level Contributor

    I'll be surprised if it wouldn't work. If not, maybe one of these Co's would make one if you requested it.
     
  3. sean Buick 76

    sean Buick 76 Buick Nut

    I would take a chance and buy it.
     
  4. gsjohnny1

    gsjohnny1 Well-Known Member

    checked my v6, 3.8/4.1, and 350 f/w's. they are the same dia, tooth count and bolt pattern. i checked jw trans and they show v6 @160 and 350 @ 166.
    figure that out. would be a great deal if they match. jw's are 300.00.
    who wants to be the first guinea pig......
     
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  5. Fox's Den

    Fox's Den 355Xrs

    well dr. Mart
     
  6. Mart

    Mart Gold level member

    That's the question. My stock & JW "the wheel" plates are all 160 tooth.
    I.D. should be same as 350. Bolt pattern? Who knows. Yep, it's thicker, s.f.i. rated to 12k, so a great deal if .....
     
  7. Fox's Den

    Fox's Den 355Xrs

    Guess who had one of the first JW "the wheel" for a 350 it is very nice
     
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  8. gsjohnny1

    gsjohnny1 Well-Known Member

    my jw is about 15yrs old. :D had it recerted 2yrs ago. :eek:
     
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  9. gsjohnny1

    gsjohnny1 Well-Known Member

    emailed them, see reply
    The teeth pitch slight different but will fit on starter without any problem
    Sincerely
    CrankShaft Depot eStore


    not a real good answer. but i'm game
     
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  10. gsjohnny1

    gsjohnny1 Well-Known Member

  11. Mart

    Mart Gold level member

    I just want to know if it bolts up to crank. Starter can be shimmed.
    When are you going to have it in your hands John?
    :)
     
  12. gsjohnny1

    gsjohnny1 Well-Known Member

    bolt pattern is the same. probably all the engines the same pattern
     
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  13. Mart

    Mart Gold level member

    Now, if they only made an internal balancer for less than 600.
    When I bought my bhj they said it was only the 4th one sold since 1990.:rolleyes:
     
  14. Dano

    Dano Platinum Level Contributor

    How many 350 torque plates besides mine do you think are out there? I suspect not very many:).
     
  15. sean Buick 76

    sean Buick 76 Buick Nut

  16. Mart

    Mart Gold level member

    Sean, I believe gsJohnny mentioned too much of a pita. Alignment modding needed.
    Dano, bore gaged 350 bores with and without head torqued down from bottom side. No change in size so torque plate seems not necessary.
    I'm with john on this sfi flexplate. I'm game...
     
  17. Fox's Den

    Fox's Den 355Xrs

    Anyone that has a shift kit in their trans should have one unless you want the stock one to crack from those hard shifts just sayin.
     
  18. Dano

    Dano Platinum Level Contributor

    I read an article that basically said the same thing. Bought the torque plate back in the '90's before we knew. I'll use it on future builds since I have it but... On those fragile 455's. it supposedly makes a difference if you bolt a head to the opposite bank.
     
  19. Mart

    Mart Gold level member

    If you use studs, and possibly a few threads deeper than factory bolts, you might find a difference. I did not check using aftermarket studs....factory probably never used a plate on the eng line.
     
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  20. gsjohnny1

    gsjohnny1 Well-Known Member

    i have a 350 torque plate. never used it. just holding the floor down.
    i bought my ati balancer direct. its a ford redone for a buick.
    too much stuff. scrap man will be happy when i die. lol
    i had to buy the sfi f/w for the twin engine altered project. don't think needed for front engine. just diapers($$$)
     
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