Best answer: What size are th400 transmission lines?

What size are the transmission lines on a Turbo 400?

Most 400s use 5/16″ flare fittings, and 5/16″ lines, most radiators do too.

What size are transmission fluid lines?

The sizes can run from 5/16 inch to 5/8 inch so that DIYer will need to be careful to choose the right size hose.

Which line is the return line on a Turbo 400 transmission?

Which line is the return line on a Turbo 400 transmission? Top line at the trans, goes to top line at the radiator. This is the return line. Cooler fluid returns to the trans from the cooler through this line.

Can I use rubber hose for transmission cooling lines?

You can use rubber hose, but make sure it’s transmission cooler line rated. The pressure is quite low (12-15 psi). Double clamp it or use FI type clamps instead of the worm-drive style.

What size are th350 cooler lines?

-6 x 1/4NPS is the correct size for GM turbo 350, Turbo 400, 700R4, 4L60E and many other GM transmissions. These have a straight thread and seal on the gasket. Unlike a tappered pipe thread these will not crack the case.

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What size are transmission cooler line fittings?

Transmission Radiator end of fitting has 1/4″ MPT. line fitting is 1/2″-20 inverted flare INS. – Factory fitting remains with recessed internal threads.

What happens if you hook up transmission lines backwards?

If you had it reversed, the pump would be trying topush fluid through the bottom of the cooler, up through the cooler, out the top into the bottom of the rad, and up through the rad to the top. More weight to push.

Does it matter which transmission line goes where?

Generally the higher line on the radiator has fluid going INTO the transmission and the lower one goes back to the transmission, so the higher line has fluid coming out of it and the lower line sucks it back into the transmission.

How do you find the return line on a transmission?

The surest way to find the return line in a transmission cooler system is simply to run the cold engine for about 15-seconds while it is in gear. Then immediately feel the two transmission lines.

What fluid runs through transmission cooler lines?

How Car Transmission Lines Work. Car transmission lines connect your vehicle’s transmission to the vehicle’s radiator. Also known as transmission cooling lines, they are typically made of metal or composite aluminium and rubber hoses because they can handle the flow of hot transmission fluid.

Are Transmission coolers directional?

Can Transmission Fluid Flow Through Either Direction on a Transmission Cooler. Helpful Expert Reply: … The cooler can have fluid flow in either direction through it.

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