bigbadchev84
1/2 ton status
ok guys i am trying to piece together a truck i got and am kinda going at this blind, does anyone know what size torque convertor bolts a th400 takes? thanks
CK5
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th400 convertor bolts
- Thread starter bigbadchev84
- Start date
Most of the older trucks used 3/8 bolts and nuts to join the flexplate and converter together,around 3/4 to 1" long..use grade 8 bolts and some locktite!..
Newer ones are sometimes metric,and thread into the converter..I think they are special bolts..they sell new ones on the "HELP" rack at parts stores,but its up to you to know the thread size/pitch..I doubt the catologs will list the right ones fist try..
Newer ones are sometimes metric,and thread into the converter..I think they are special bolts..they sell new ones on the "HELP" rack at parts stores,but its up to you to know the thread size/pitch..I doubt the catologs will list the right ones fist try..
bigbadchev84
1/2 ton status
i think they thread into the convertor, i believe its the allison convertor? does this sound right? the tranny shop told me it was heavy duty if that makes a difference.......anyone?
bigbadchev84
1/2 ton status
ttt
As stated, some use bolts and nuts, some thread in, and the older thread-ins were coarse thread I believe, though the newer metrics are fine (but only in 700 and 4L series I think?). Figure out which you need and visit a tranny shop, tell them which it is, done. You need G8, and the bolts are so short that many bolt shops don't stock them, particularly the fine threaded ones.
