bottom line
On a GM Turbo 350 transmission the bottom line is the return line and the one to install a transmission cooler on. The top one is the send line.
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.
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 is a transmission oil cooler line?
The transmission oil cooler hose on a car helps to carry the transmission fluid from the transmission to the transmission cooler. The oil cooler is designed to lower the temperature of the transmission fluid to make it easier for the internal parts of the transmission to use.
Which is the return line on a transmission?
The lower line near the bottom will be the return line.
What size are transmission cooler lines?
Transmission Cooler Fittings and Placement Information
| Fitting Location | Thread Size | Flow Direction |
|---|---|---|
| Front | ¼” Pipe | Cooler feed/out |
| Rear | ¼” Pipe | Return/in |
How much is a transmission cooler?
The average transmission cooler replacement cost is between $100 and $300. Parts shouldn’t be more than $200 with most vehicles, with labor adding in another $100. If you need to replace a transmission cooler, the process isn’t difficult.
What are transmission cooler lines made of?
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.
Can you repair transmission cooler lines?
Like all parts of an engine, transmission cooling lines can wear out. If they break or develop a leak, you will lose transmission fluid, leaving your car vulnerable. Thankfully this is a fairly simple fix, and most transmission line repairs cost between $100 and $500 dollars.
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.
Can you bypass transmission cooler lines?
It is possible to bypass the factory cooler in the radiator by blocking off the input/output locations for the transmission cooler on the radiator. You would then need to mount the largest possible cooler that you can get to fit or install a remote cooler with its own fan.
Does it matter which transmission line goes where?
The top hose from the transmission cooler goes to the top pass through nipple to the transmission and the bottom hose from the transmission cooler goes to the bottom pass through nipple into the bottom of the radiator.
What are the dimensions of the TH350 transmission?
The 350 transmission is 21-3/4″ long and its one-piece case is cast of aluminum alloy. It features an integral bellhousing. The TH350 weighs 120 lbs.
Does a TH350 Trans have a trans cooler?
Besides the Vegas and the Monzas, the th350 trans that came in them didnt even have the holes tapped into the trans for a cooler. Besides the Vegas and the Monzas, the th350 trans that came in them didnt even have the holes tapped into the trans for a cooler.
What is the part code for a TH350 lockup transmission?
The TH350-C lockup version can be identified by an electrical plug on the left side of the transmission. When paired with an aftermarket TCC control unit, these can be desirable transmissions, and up to 10% more efficient at cruising speeds. The conventional TH350 had part codes of M33, M38 & M39.
What engines are compatible with a TH350?
The front face TH350 is natively compatible with either the Chevrolet 90 degree “Small Block” & “Big Block” patterned engines, including the V6, V8, I6 & Iron Duke I4. Another version, the Buick / Oldsmobile / Pontiac (BOP) TH350 will be compatible with the Buick 90 degree V6 & V8 engines, and the Olds & Pontiac 90 degree V8.
