Bolt sizes

[no_3]

Hey dudes, I need to know the bolt sizes from toploader to bell houseing and form the bell housing to block.
Anyone know this, or where I could go on the net to find out?

 

[CarlF250]

What year Mustang? What engine/transmission?

 

[outlaw66]

The bellhousing takes 2 ea 3/8 X 1 1/2 inch and 4 ea. 3/8 by 2 inch course threaded bolts. Don't forget to put the plate on the back of the engine before you install the flywheel. I don't remember what size the Xtrans bolts are, but I think they are larger than 3/8's, maybe 5/8's or even 7/16's. Go to any hardware/fastener place and buy a plastic bolt guage, which also has threads per inch. You could also measure the bolt holes for sizing. They are all course thread.

Outlaw66

 

[rbohm]

you can order the correct bolts in a kit from autokrafters. avoid hardware store bolts in this application.

 

[D.Hearne]

All bellhousing to trans and block bolts are 7/16" NC. Can't tell you the lengths as they vary on the bell to block side. I can tell you, you want them to thread at least 1/2" into the block, including the 1/16" for the block plate between the bell & block. The trans to bell bolts need to thread nearly all the way to the bottom on aluminum bell housings. They're something like 1-1/2" to 2" long.