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.

Bellhousing bolt size

Discussion in '1982-Present GM Diesel' started by jarheadk5, Mar 11, 2006.

  1. jarheadk5

    jarheadk5 1/2 ton status

    Joined:
    Mar 6, 2000
    Posts:
    4,389
    Likes Received:
    0
    Location:
    PA
    Gotta start cleaning up my engine stand for when the 6.2 comes out of the C10, and I need new bolts to hold the engine onto the stand. What size are they?
    i.e. 1/2"-20, 3/8"-24, etc...
     
  2. afroman006

    afroman006 1/2 ton status

    Joined:
    Aug 21, 2002
    Posts:
    2,876
    Likes Received:
    0
    Location:
    College Station & Kingsville, Texas
    I believe they are 7/16 and you have to figure out what length you need based on your particular stand. The bolts thread about 3/4 to 1 inch into the block.
     
  3. jarheadk5

    jarheadk5 1/2 ton status

    Joined:
    Mar 6, 2000
    Posts:
    4,389
    Likes Received:
    0
    Location:
    PA
    Any idea on the threadcount?
     
  4. afroman006

    afroman006 1/2 ton status

    Joined:
    Aug 21, 2002
    Posts:
    2,876
    Likes Received:
    0
    Location:
    College Station & Kingsville, Texas
    Standard course thread.
     
  5. colbystephens

    colbystephens 1 ton status GMOTM Winner

    Joined:
    Feb 24, 2005
    Posts:
    10,924
    Likes Received:
    20
    Location:
    Oregon
    they are 3/8 course, man. i just bought them yesterday. make sure to get grade 8.
     
  6. afroman006

    afroman006 1/2 ton status

    Joined:
    Aug 21, 2002
    Posts:
    2,876
    Likes Received:
    0
    Location:
    College Station & Kingsville, Texas
    Whoops. My bad :D . I used grade 5.
     
  7. colbystephens

    colbystephens 1 ton status GMOTM Winner

    Joined:
    Feb 24, 2005
    Posts:
    10,924
    Likes Received:
    20
    Location:
    Oregon
    hey, if you can make it work, that's cool. i think that while grade 5 are not as strong as 8, they have more play before they shear.
     
  8. jarheadk5

    jarheadk5 1/2 ton status

    Joined:
    Mar 6, 2000
    Posts:
    4,389
    Likes Received:
    0
    Location:
    PA
    I love a challenge...

    So yesterday I pull the engine stand out of the garage corner and pull the bolts. The bolts in the stand, that go into the bellhousing holes, are 7/16" diameter (checked via the open-end wrench trick).

    You guys are saying I need 3/8"...

    Do small-block F*rds use a 7/16" bellhousing bolt? I "inherited" this stand from an uncle who's a diehard blue oval fan, and the last engine on the stand was a 351...
     
  9. MattK

    MattK 1/2 ton status

    Joined:
    Jan 12, 2005
    Posts:
    1,713
    Likes Received:
    0
    Location:
    Dallas, TX
    if your truck is handy, 1 or 2 of the bellhousing bolts are pretty easy to get to from underneath. it might be worth it to pull one to get proper measurements.
     
  10. colbystephens

    colbystephens 1 ton status GMOTM Winner

    Joined:
    Feb 24, 2005
    Posts:
    10,924
    Likes Received:
    20
    Location:
    Oregon
    all i know is that in the last year i've bought three sets of bolts to hold 6.2's to engine stands, and every time it's been 3/8 coarse. this was for an 82 and 83 engine block.
     

Share This Page