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tranny cooler line size

HELLBENT DESIGNS

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hi does anyone know the pipe thread size of the fitting for a th350 transmission?, i need to order adapter fittings thanks :D
 
it should be 3/8's i believe... t400 and 700r's are the same and those are 3/8's npt iirc...
 
ryoken said:
it should be 3/8's i believe... t400 and 700r's are the same and those are 3/8's npt iirc...
i tried a 3/8 and it was too big1 i was hoping somone would say oh it's 1/4" that's my guess :dunno:
 
honestly, i'm going on what i remember them looking like from last spring.. :o 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...
 
ryoken said:
honestly, i'm going on what i remember them looking like from last spring.. :o 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...
wow i would think they would be larger! :yikes: thanks alot for the info :waytogo:
 
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
 
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



that is a great reference breakdown, i always get confused when trying to remember.... Thanks !!
 
just to let anyone know that's thinking about a braided line swap. i ordered the 1/8" pipe thread fittings for my th350. no worky :mad: too small! must be 1/4" TCI's info isn't complete :dunno: the tranny i have is the standard th350 to 203 nothing exotic.
 
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?
 
ryoken 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?
no problem! i usually run AEROQUIP or EARL'S sometimes summit racing's stuff if it works :D
 
question

Are you asking the thread pitch and dia of the cooler line holes in the alum case
or the size for the tube nut ?
I confused cuase 1/8 is what you use for oil sender.
Wes
 
the npt size of the case... it should be 1/4, like the 700r4....
 
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
 
i run Russels #6 steelbraided Proflex with fullflow fittings...
fittings.jpg


13480tfilter1.jpg
 
ColAdo82K5 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
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 overkill :dunno: 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 :D
 
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