Bellhousing bolt size

[jarheadk5]

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...

 

[afroman006]

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.

 

[jarheadk5]

Any idea on the threadcount?

 

[afroman006]

Standard course thread.

 

[colbystephens]

they are 3/8 course, man. i just bought them yesterday. make sure to get grade 8.

 

[afroman006]

Whoops. My bad . I used grade 5.

 

[colbystephens]

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.

 

[jarheadk5]

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...

 

[MattK]

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.

 

[colbystephens]

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.