Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

flywheel problem

Discussion in 'The Garage' started by wraenking, Jun 26, 2004.

  1. wraenking

    wraenking 1/2 ton status

    Joined:
    Apr 30, 2003
    Posts:
    1,493
    Likes Received:
    0
    Location:
    Toms River, NJ
    my newer 350 i got has a fly wheel that is about a half and inch smaller in diamter than my flywheel from my 305. they flywheel on the 350 was cracked so i wanted to swap them.

    1st problem was that the center hole from the 305 wheel was smaller. then i noticed the wheel from the 305 was smaller in total diameter.

    now how do i know what to get for a new flywheel? im worried that if i get the same flywheel that was on the 350, it wopnt match up to the 700r4. (the 350 was out of a car)

    so, what are my options before i make a hundred trips to napa so i get the righ tfly wheel for the engine and tranny?


    now can the piece that the flywheel mounts to be removed and switched over?


    thanks guys

    tom
     
  2. tarussell

    tarussell 1/2 ton status

    Joined:
    Dec 28, 2002
    Posts:
    1,354
    Likes Received:
    0
    Location:
    Bagdad , FL
    It might help at the parts house if you call what you are looking for a "flexplate" instead of a "flywheel" - flexplates are used on automatics and flywheels are used on manual tranny's . I am not trying to be picky but it might confuse your parts person .
    As far as I know the 1986 and up engines use a one piece rear main seal crank and there fore a smaller diameter crank bolt pattern where the flexplate/flywheel mates to it .
    There is also a 168 tooth count and a smaller 153 tooth count - make sure of which one you have . I would think your truck should have come with a one piece rear main ( newer style ) flexplate and a 168 tooth count .
    Flexplates are fairly cheap so don't get caught up with a delay when a new one is not that exspensive .
    Good luck , Tom

    EDIT: After re-reading your post it sounds like you need a 1985 and OLDER two piece flexplate that is 168 tooth count - just use a 1985 K-20 as your application and the parts store should be able to fix you right up .
     
  3. BlazerGuy

    BlazerGuy 3/4 ton status

    Joined:
    Apr 20, 2000
    Posts:
    9,206
    Likes Received:
    0
    Location:
    abcde
    [ QUOTE ]
    it wont match up to the 700r4.

    [/ QUOTE ]

    There isn't a flywheel on the face of the planet that would match up to a 700 seeing as how autos use flexplates and manuals use flywheels.... /forums/images/graemlins/wink.gif /forums/images/graemlins/wink.gif /forums/images/graemlins/grin.gif /forums/images/graemlins/doah.gif
     
  4. BlazerGuy

    BlazerGuy 3/4 ton status

    Joined:
    Apr 20, 2000
    Posts:
    9,206
    Likes Received:
    0
    Location:
    abcde
    Ya beat me to it! /forums/images/graemlins/thinking.gif /forums/images/graemlins/grin.gif
     
  5. wraenking

    wraenking 1/2 ton status

    Joined:
    Apr 30, 2003
    Posts:
    1,493
    Likes Received:
    0
    Location:
    Toms River, NJ
    so if i just tell them i need a flexplate for a 86 350, it should be the right one? im just hoping that the part where the flexplate mounts is the same. i know my 305 flexplate was to small to get over it.
     
  6. tarussell

    tarussell 1/2 ton status

    Joined:
    Dec 28, 2002
    Posts:
    1,354
    Likes Received:
    0
    Location:
    Bagdad , FL
    NO - You need a 1985 and OLDER fexplate . Tom
     

Share This Page