Bottom line of the transmission = out to the cooler TH350 adapters GM uses an adapter which threads into the case cooler ports and is sealed with a washer. The ST300 has a complex multi-angle torque converter and … Automatic Transmission Cooler Lines, 7 Foot Length, Flexible, Braided Stainless Steel, PTFE, 4L60, 700R4, TH350, TH400, Pair. your own Pins on Pinterest Took it to a shop, they purchased the bent lines from GM, took a … The transmission was mated to the 215 inline six (I6) and the 326 and 389 V-8s in the Gen­eral Motors A- and B-Body cars. Exchanging a Powerglide for a TH350 is a pretty basic swap. Order 1977-1980 Corvette Cooling Lines TH350 Automatic Transmission for only $74.88 in our huge selection of parts. Our inventory selection includes automatic transmission cooling lines and radiator outlet pipes, along with cooler hoses and radiator inlet pipes to meet your Corvette restoration needs. This cooling also prolongs the life of the fluid. I have seen it numerous times both on the track and the street. The TH350 takes about 4 quarts in the pan, and then requires additional based on the torque converter being used. Thanks! This 2-speed transmission was slotted into various models in the Buick, Oldsmobile, and Pontiac lines. Guaranteed lowest price! Description: 8 cyl. Turbo 350C | TH350C Automatic Transmission Parts and Diagram - Turbo 350 / TH350 Automatic Transmission Parts Diagram - Exploded View The fittings on the transmission should be held stationary with a second wrench to keep them from moving while the lines are tightened. In most applications where the external trans cooler is used in addition to the factory one, you will need to route the new transmission lines from the radiator to the external cooler. Part Number: SUM-230321 Comes with 10 feet -6 An Stainless Braided 3/8” hose to cut to length, 2) -Fittings, 4) -5an To 6an Adapters,& 4) - Transmission And Radiator tubes 5/16". ... From top of external cooler back to trans. Above is a diagram showing a transmission cooler mounted behind a radiator. The T 350 had a looped copper line, the fella had the transmission serviced by a local shop and drove the lincoln to Cruising the coast and back. For lots more information on transmission coolers and other towing accessories, see the … ... Ford Transmission Cooler Fittings C3, C4, C5, C6 Fitting Location Thread Size Flow Direction Front ¼" Pipe Cooler feed/out The installation seems pretty straight forward, however it appears in one of your diagrams that you attached the cooler to the return line going back to the transmission. Search "" across the entire site Search "" in this forum Search "" in this discussion. (b) If propeller shaft does not turn and transmis- On my 392, my lines run between the top edge of my valvecover and my blower intake, on the front part of my passenger side head, I have a bracket that holds the power steering pump cooler, (its smaller than a regular trans cooler but they work and they're not expensive, and heavy duty to boot), about 2 1/2" off the head and it recieves airflow from the fans on the radiator. The below transmission cooler installation diagram shows the transmission fluid flow direction and how the fluid will be routed through a new external cooler. ... Heat would counteract the cooler's effort, and a moving part (like a fan) could sever the line. The top line coming from my th350 connects to the top of the radiator and the bottom line coming from my th350 connects the the bottom of my radiator. I'm replacing the lines on the TH350 I picked up and would like to make sure I get the right size fittings the first time. Transmission Wiring Harness Diagram T5 Transmission cooler lines flow direction page 2 hummer forums 4l60e cooler line flow 4l60e transmission cooler line routing images e993 com 4l60e transmission line diagram wiring schematic. Re: Transmission lines where do they go? The two lines are stacked on top of one another on the tranny body. small or big block w/ 700R transmission with radiator mounted in front of core support. The cooling lines help the fluid to chill by removing it from the hot transmission and allowing it to pass through a cooler zone. If you watch line pressure and cooler flow at the same time, when line pressure drops, you will see a corresponding change in cooler flow. The Turbo 350 transmission, commonly known as the TH350, was a 3 speed automatic transmission that began phasing out the GM Powerglide in 1969. Discover (and save!) Which is the output line and return line on a turbo 350? Part # Description Application Reqd Price Stock Status QTY. 430 A C TURBO HYDRAMATIC 250, 250C, 350, 350C 3 SPEED RWD (Lock Up & Non Lock Up) Revision 02/2018 1994 Jeep YJ Wrangler, 1979 Ford F-150 4x4, 1949 Jeep Willy's P/U Truck. Transmission fluid cooler lines on the 700R4 the bottom fitting on the right side of the transmission is the "out" line to the cooler and the top fitting is for the return line from the cooler. Note: Pressures above 90 psi at idle may result in 2nd gear starts, particularly when the transmission fluid is warm. The Turbo 350 transmission was introduced beginning in 1969. Save $10 off $299, $20 off $599, $30 off $799, $100 off $1,599 Orders When combined with a 9.5” converter, the overall requirement is around 10 quarts. The average GM overdrive transmission will have 65-90 psi line pressure at idle on a gauge. This transmission was a 3 speed automatic transmission developed jointly by Chevrolet and Buick.Although they were both under the General Motors umbrella, at the time they acted as completely separate entities, whereas now the developers at General Motors powertrain work only for GM, not Chevrolet or Buick. The very next day one of the transmissions lines started to leak. This should spike with slight pressure applied on the cable or if the throttle is cracked at all. Which way does fluid run through system I think I may have them connected wrong running fluid out when should be ran in (4) Raise and support vehicle on safety stands, start engine, shift transmission into gear, and note following: (a) If propeller shaft turns but wheels do not, problem is with differential or axle shafts. Because the transmission lengths are the same and the positioning of the crossmember can be easily modified, you need only change the transmission mount, add transmission cooler lines and change the shift indicator bezel to a TH350 shift pattern to complete the exchange. This pan is 2.75" deep. Shop restoration car parts and accessories at Ecklers. This is because the pressure drop makes it all the way back to the balance end of the PR valve, and the forces at the other end of the PR valve overcome the reduced balance/line oil pressure and the PR valve moves out of balance. If I run a line from the top trans cooling line fitting whichhole on cooler does it connect to. I need to know what line goes to what fitting on trans and cooler. Jul 28, 2019 - This Pin was discovered by Jesse. These fittings are .25 in (6.4 mm) pipe thread, and can include an adapter from the factory for threaded steel lines in a SAE size. Install the transmission cooling lines and tighten securely. The adapter converts the thread to inverted flare for hard line usage. Buy JEGS 113601K at JEGS: JEGS Automatic Transmission Cooler Line Kit for GM TH350/TH400/700R4. 14200D TH350 Transmission pan cooler (Black Finish) TH350 automatic transmission pan features turbulator cooling tubes using air flow beneath the vehicle to reduce the transmission fluid temperature from 20° to 50° F. Increases capacity by 1.5 qts. Whether you’re maintaining your Shark Corvette or completing a full restoration, our selection of C3 Corvette Shifter & Transmission parts is unsurpassed. (3) Check for cracked, leaking cooler lines, or loose or missing pressure-port plugs. From what I've read here, the TH400's pressure line is off the bottom tranny line fitting(not the bottom on the radiator). All Powerglide, TH350, TH400, 700R4, 4L60E, 4L65E, 4L80E, 4L85E, the bottom fitting is the pressure side, the top fitting is the return. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. I am going to order and install a transmission cooler on my 2001 Chevy Silverado 1500 4.8L. I looked at the job and decided that it was going to be a pain. Small hard tubes at the radiator And To The Trans end, and flex hose the rest of the length. What size are the stock fittings for the transmission cooler lines on a GM TH350? I had to replace the pan gasket because the new gasket would let all the fluid out on the floor and it still had the looped line for a cooler, and about 1/8" of sludge in the bottom of the pan. Check here for special coupons and promotions. I did this for multiple reasons. However, like all tubing in the car, the transmission cooling lines can leak, causing the transmission to overheat and fail if you do not replace the lines immediately. Factory connected the the bottom tranny fittting (out) to the top of the radiator, then the bottom outlet on the radiator goes to the top fitting (in) on the tranny. 1973-87 STD Cab 1/2 Ton & 3/4 Ton 1973-89 Crew Cab 3/4 Ton Flexible Transmission Line Set -This allows flexible Trans lines to be run from the Trans to the radiator. But to use an aluminum line that is designed as a carburated application fuel line for trans cooler line is asking for trouble. Order Transmission Coolers & Accessories for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. Being that the radiator I have has a trans cooler built into it i figured I should get the lines in while the floors are out. GM Turbo 350 Transmission Installation Guide. Earlier this year my power steering cooler started to leak, replaced it myself. The Moroso line that you recommend is stricly a low PSI high volume seamless line (minimum line pressure of a t-350 is 55 psi). 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