HELLBENT DESIGNS
1/2 ton status
hi does anyone know the pipe thread size of the fitting for a th350 transmission?, i need to order adapter fittings thanks 


i tried a 3/8 and it was too big1 i was hoping somone would say oh it's 1/4" that's my guessryoken said:it should be 3/8's i believe... t400 and 700r's are the same and those are 3/8's npt iirc...

they might may very well be 1/4... actually now that i think about it, 3/8's is pretty big compared to what i remember putting in when i went with Endura fittings and #6...wow i would think they would be larger!ryoken said:honestly, i'm going on what i remember them looking like from last spring..they might may very well be 1/4... actually now that i think about it, 3/8's is pretty big compared to what i remember putting in when i went with Endura fittings and #6...
thought i had a link to a list.. hmmmm, wait, here it is... http://www.tciauto.com/tech_info/cooler_fittings.htm
looks like i was wrong, t400 and 700 are the same at 1/4 and it says 350 is 1/8.. boy that seems small for a tranny line...
thanks alot for the info 
R72K5 said:5/16" tubing is for trannies
3/8 was for 4 bbl carb fuel feed
5/16" also was for 2bbl carb fuel feed line
3/16" is front brake lines and rear axle tube lines-= after the rear hose split block
1/4" for rear frame line all way from the rear brake m/c port
too small! must be 1/4" TCI's info isn't complete
the tranny i have is the standard th350 to 203 nothing exotic.
i feel bad considering i've done the swap with my 700.. shoulda remembered...no problem! i usually run AEROQUIP or EARL'S sometimes summit racing's stuff if it worksryoken said:i thought that sounded small... sorry for the misleading link...i feel bad considering i've done the swap with my 700.. shoulda remembered...
what brand fittings you running?

iirc NHRA regs are less than 24" of rubber line on vehicle? the more rubber line the more risk of leaks/fire. factory steel lines work fine for 99% of rigs, braided lines for trannys may be overkillColAdo82K5 said:What type of plumbing/hose would one ask for if running soft transmisson lines ?
I know the high temp rubber stuff is not good because of fire risk, but could I run all the special braided hose instead of my poorly routed metal line ?
Blake
6an line should be fine for trans lines. i was most concerned about chassis flex and fatigue with steel lines as well as aftermarket cooler options so that's what made me decide on an stuff 