Hot Rod Forum banner
1 - 7 of 7 Posts

·
Registered
Joined
·
73 Posts
Discussion Starter · #1 ·
What thread size and lenght bolts do I need for a TH400 to BBC hookup? Are all 6 going to be equal length? I pulled this 400 from behind a 350 and I think the last user dug whatever would fit out of a pile'o bolts.
 

·
Registered
Joined
·
73 Posts
Discussion Starter · #4 ·
20 or 16, i can compare to one of the bolts that fit. 20 sounds like the finer threads.

on the subject, what about the bolts for the trans mount? i think they are much smaller, but I don't have any old ones for comparison.

thanks guys
 

·
Administrator
Joined
·
10,116 Posts
t-400 mount bolts will be a 7/16 course thread or a metric 10mm x 1.5 thread.

10mm x 1.5 thread is close to a 3/8 bolt size . but the 3/8 will fit in the hole loosely.
 
1 - 7 of 7 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top