73' th350 trans lines??

[jess66chevy]

Does anybody know where I can buy transmission lines for cheap for a 1973 TH350? Besides a junkyard. Anybody know of any company's that sell them?

[jd74c-10]

go to napa and buy straight 5/16" steel line's and bend to fit. they already have the flare nut's on them and will fit into the fitting's on your trans, and radiator.

[78 Big10 454]

I got mine from LMC and they were a perfect fit.

[jess66chevy]

I actually swapped out a 3 speed for a TH350. I am going to run an aftermarket exteranl trans cooler so it will not hook it up to my radiator. Can I buy the metel lines from NAPA and cut it off where I need it and hook up rubber hoses to the trans cooler?

[KQQL IT]

dont cut them slide the nut back or get the adapter from the nut to barbed fitting

[jess66chevy]

whats a barbed fitting? Sorry, Im new to this..

[KQQL IT]

go to your local parts store Napa, auto zone get two 5 foot pieces of 5/16 hard line and they should be able too get the fittings and proper hose clamps and even cooler if you havnt one

[jd74c-10]

if you need to cut the steel lines use a tubing cutter to cut the length you need then flare the end of the line where you made the cut, that way the hose will not slip off when under pressure.

[jess66chevy]

Guys,
Can I put barbed fittings on the transmission and run all soft lines to the trans cooler?

[78 Big10 454]

Jess, I tried that. Don't you do it. Learn from my mistake.

[jess66chevy]

What went wrong 78big10?

[78 Big10 454]

Jess, I had those soft lines lines clamped down so hard, a gorilla couldn't have budged them. On the way from L.A. to Parker, AZ, in the middle of nowhere, in the middle of Summer, both lines blew. There's a reason the factory installed steel lines and I found out the hard way.

[jd74c-10]

if you use any hose it has to be oil hose or transmission fluid hose. fuel hose will not hold the pressure and the oil will eat the hose until it falls apart. and what were you doing in parker az. there hasn't been anything there since the 60's. two stop lights and a new walmart.

[jd74c-10]

forgot what i was going to tell you when i heard someone mention parker az. go to jegs website and look at there assortment of coolers , line's and fitting's they will give you a better idea of what you need and the cost. Jim

[Damien]

When you go to get the cooler lines and hoses, Demand Transmission cooler hose. Don't let them tell you fuel injection hose will work.

[jess66chevy]

Nice info! Do they sell trans cooler hose at autozone?

[78 Big10 454]

No, it wasn't fuel hose. There's a lot of pressure in those lines. A/T fluid everywhere!

[jd74c-10]

yes autozone usually stocks transmission hose. use the steel line from the trans up to the cooler then a couple short hose's , don't let the steel line's rub together because they will wear through and leak also. if they are side by side split a hose and put it on one of the steel line's then strap the lines together so it isn't metal to metal.