For example, replacing a Powerglide with a Turbo 350 is an easy swap. Fitting Location Thread Size Flow Direction. 1. 5”, 8”. By using an electric gauge with a switch and three senders I can monitor feed out to the cooler, cooler return, and sump as I choose to. 427sleeper and Pops @ Tri-5. (245 reviews) Code: D13035. I have pulled out the subframe and have a few pictures of the colling lines on my car. If you had it reversed, the pump would be. The turbo350 uses two brass fittings for the steel cooler lines to screw into. 70 Gs. o The upper transmission coolant line on the TH-350C transmission is the return side (cooled fluid returning from the radiator). They are an ideal solution for replacing your old factory rusted or damaged lines. Transmission Cooler Lines, Chevy, TH350, TH400, Models with Factory Eq. 454, TH400, NP205, 6" Susp Lift,. 1968 Camaro. All weights are without converter and dry with stock components. Transmission cooler lines 2004r. Does it even matter?. F150 Transmission Cooler EBay. Polished. An Eckler's PDF that shows a TH350 installation has poor quality images but it looks like the transmission lines go through or behind the motor mounts. Th350 Cooler Lines Diagram 3 3 marked↵ a milestone in automotive history. 135-140 lbs, a TH400 weighs 135 lbs, a TH350 weighs 125 lbs. Born 283 / PG / A51. 07. comSurface Studio vs iMac – Which Should You Pick? 5 Ways to Connect Wireless Headphones to TV. More than 10 available. now 427. Estimated Ship Date: Oct 30, 2023 (if ordered today) Special Order. Source: schematron. TH350/TH350C . Then place a clamp just ahead of the flair. NPT Threads on Case; Includes: Black Fittings; Stainless Steel Braided Hose; View Details. blogspot. If you are searching about Turbo 350 vacuum line hook up help wiring lockup on th350c. i dont believe in cross threading stuff, but some people do, save enough to replace the cracked trans case. Cooler th400 gm 700r th350 4l60 rebuild 700r4 transmissions reverse pickup k1500 truckforum 4l65 fti r42001. On a Turbo 350 transmission you have the upper and lower transmission cooler lines on pass side of the car. These readings can be obtained by attaching a 300 psi fluid pressure gauge to the appropriate pressure port on the transmission, and running the engine at 2000 rpm. { a 350 has a ball and seat that blows off to let oil circlale. 5) Swapped out direct housing for 1968 housing (or ealier) 6) 4L80e forward piston and clutch hub to allow for extra friction and steel. page 7A-17, upper left hand corner, shows a picture of a Turbo 350, with a label for the upper port as the pressure line to the radiator, and the lower port as the suction line (return) from the radiator. i tried a new rubber o ring still leaks. PART NUMBER: TRA-2183S. spare tire hardware, glove box, package tray, dash and door parts. You can hook the lines up either way you wish on the radiator. in this thread in this sub-forum in the entire site. The cooler core will flow in either direction, there is no specified inlet or outlet port. 4 Wheel Drive 8 Cylinder 67-72: 1: $79. GMC Customer Service: 1-800-462-8782. Get the vehicle up in the air with the use of either a jack and jack stands or ramps. 26+ th350 vacuum line diagram - RoderickCalder. 24 Exedy TH350C LowRev Clutch Frictions 69-86 25T 86415133832386 DAG02640 Ganzeboom Transmission Parts & Torque. Part Number: RSD-ATV7005. Ad Buy Online Save Big. Everything is the same. Ford Transmission Cooler Fittings. 4l60e transmission cooler lines diagram. Make sure the U joint cups (bearings) are properly positioned in. Install the DT-45096-31 adapter (3) over the removed transmission oil cooler line (2) to prevent any fluid spillage. CONCLUSION: On a cold engine/transmission the trans cooler is actually warming the returning trans fluid. Dash. it the moment I will consider. o The lower transmission coolant line on the TH-350C transmission is the pressure side (hot fluid pumped out of the transmission). Hello. Make sure the U joint cups (bearings) are properly positioned in. The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums >. Lockup converter torque wiring diagram computer 700r4 lock without gm transmission switch r4 chevy valve turbo body engine rod th350Diagram transmission cooler th350 ford cooling schematic wiring 700r4 derale installation aluminum duty lock chart e4od coated pan powder finish. T 350 cooler lines Hot Rod Forum Hotrodders May 13th, 2018 - Which line is the outgoing line to the tranny cooler on a TH350 T 350 cooler lines Fitting Location Thread Size Flow Direction Oil Industry Process Flow Diagram SmartDraw May 10th, 2018 - Create Process Flow Diagram examples like this template called Oil Industry Process Flow Diagram. Web it says that the top line is the return line. Register or Log In To remove these advertisements. OIL FLOW DIAGRAM Page1 Discuss Super Chevy Tech Talk and Chevy Technical Discussion topics in the Super Chevy forums at Super. 0 out of 5 stars ( 1 )twotone64. Turbo 350 transmission cooler lines diagramTransmission th400 routing cooler line installuniversity avoid bend degree weird shown length side Th400 lines cooler transmission fittings pre made shop misc trackhawk demon hellcat drivetrainTh400 cooler lines diagram. 4272 (502×700)350 transmission turbo diagram gm chevy th350 700r4 transmissions specs engine chart trans identify 350c rebuild identification parts type lookup. Vendor. 167. Sold as a 2 piece set, both are 5/16" in diameter. View Turbo 350 (TH350) transmission cooler line diagrams and cooler flow path that route to the radiator and to an external transmission cooler. Drain the fluid and pull the pan. It’s a very tough unit. TH325/325-4L . The T-350 cooler line pressure runs 20 - 60 psi on a stock configured T-350. 215. Remove the skid plate and the splash guard. Which best th350 cooler lines diagram for you? Our site has in-depth comparisons and truth reviews that will help make your decision easy. i went with flex steel lines but my problem is. Upper ⅛" Pipe Return/in. Which line is the outgoing line to the tranny cooler on a TH350 T 350 cooler lines Fitting Location Thread Size Flow Direction. Remove the two transmission cooler lines from the side of the transmission with a flare nut wrench. This diagram provides a clear and concise visual guide for properly routing the cooler lines during installation or replacement. It has several key modifications that increase it’s strength. Vocational, Technical or Tra. Oversize $9. Alas simplicity usually wins out. Weve got a great one right here that will help you get the job done quickly and. tor and shifter cable. . A radiator has the upper inlet introducing the hot coolant from the engine into the radiator. The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM. 7K views 2 years ago Replacing the kinked and leaking steel transmission cooler lines with NiCopp lines. GM Transmission Cooler Fittings. 6AN 70" Transmission Fluid Oil Cooler Hose Line kit for GM Chevy Transmission 4L80E TH350 TH400 4L60E 700R4 200-4R TR6060 Ford AOD 4R100 4R70W and C5 Stainless Steel Braided PTFE Hose Brand: Generic 4. A good rule of thumb is run a least a by past line. 152 posts. Common as dirt on TH 350. This item 6AN 70" Transmission Fluid Oil Cooler Hose Line kit for GM Chevy Transmission 4L80E TH350 TH400 4L60E 700R4 200-4R TR6060 Ford AOD 4R100 4R70W and C5 Stainless Steel Braided PTFE Hose Sineside AN6 Flexible Transmission Cooler Lines and Fittings, 2Pcs 7FT PTFE Lined Braided Stainless Steel and Nylon Hose, Replace 700R4/4L60 /TH350. There are upper and lower oil cooler connectors at the. Sponsored. 7K views 2 years ago Replacing the kinked and leaking steel transmission cooler lines with NiCopp lines. Or email us using our CONTACT link. Lokar. lines; b) replace the torque converter; and c) replace any auxiliary transmission cooler(s) (if applicable). Compare. Get Free Shipping on TH350 parts at Speedway Motors. Notes: We can get the TH350 Trans Cooler Lines also or have them Drop Shipped. All Doors; Door Hardware; Door Hinges and Latches;. 5/16 lines, you can also use flare to AN fittings into the brass adapters (usually. Posted on April 26, 2023 by admin. Ecsb 4wd. STEP 10: Install drive shaft (and torque arm if used). Use the adjusters on the transmission jack to keep the transmission well aligned with the engine. The lower line from the TH350, 400, or powerglide tranny is out. All lines are formed utilizing the correct automotive grade, OE or stainless steel tubing and includes the correct style flares, fittings and protective wrap, installed on the linline to the transmission case. Fluid Cooler Lines (229) Air Conditioning Hoses and Lines (181) Oil Cooler Lines (121) Brake Hoses, Sets (50) Hose Kits, Cooling System (34). Fits 1968 – 1971 Buick A Body w/TH400. 78 Malibu Classic factory 4 speed. GMOTM Winner. Turbo 350 transmission rebuild diagram. . The TH350 Cooling Line Diagram is a visual representation of the cooling system in the TH350 automatic transmission. I'm getting ready to install a remote trans filter. Then the bottom line goes back to the transmission with the cooler fluid. 10 Diagram Th350 Cooler Lines In And Out Luceeinayat Chevy 350 with a th350 transmission. GM TH400 Automatic Transmission. A loss of fluid leading to an overheated transmission can be devastating as the system loses its ability to cool. Cooler line swap. 34-5695. Web technical routing lines from th350 to radiator. Web web diagram th350 cooler lines in and out thread. TH350, TH250. Open the fold-out page, Vacuum System Schematic, figure , page GM TH350 Automatic Transmission Gm turbo and c th transmission 3. Ad But Did You Check eBay. 3. Easy to use parts catalog. Powerglide - OEM. Disclaimer: Under no circumstances will proclaimliberty2000 be responsible or liable in. [Stainless Steel] 13221 parts at JEGS. Fitting Location Thread Size Flow Direction. Th350 Transmission Diagram. T 350 cooler lines Hot Rod Forum Hotrodders. New paint -near complete. 700r4 Transmission Cooling Lines Engine Diagram And. Does anyone have pictures of their trans cooler lines from a TH350 or TH400My Nova is a 1970. Port Spacing [Stainless Steel] (0) $49. Oldsmobile. NPSM or 1/4 in. For those of you who have swapped a 2004r in your 1969, did you "tweak" T350 lines, make your own, use BTO Lines Made E-Z, or braided. May 13th, 2018 - Which line is the outgoing line to the tranny cooler on a TH350 T 350 cooler lines Fitting Location Thread Size Flow Direction TH 350 cooler line oil flow Hot Rod Forum Hotrodders. Derale Combination Transmission and Engine Oil Cooler with Multiple Threads (15 reviews) Code: D15902. Material: Steel. If the transmission cooler runs horizontally, it doesn't matter whether the trans fluid runs to the left or to the right. 69 Chevelle Malibu 400/TH400 (136379Z328013) 67 Camaro Coupe 327 - Sold 26:th of Aug 2014. We use Ni-Copp for the lines. #2 · Oct 3, 2006. Off-road applications receive an 18 month/100,000 mile parts and labor warranty. 66 Chevy II 355SB TH350 03 Chevy Siverado 6. New transmission cooler lines for your Firebird. Transmission bottom to radiator top. Slide the transmission forward on the alignment studs and onto the dowel pins. 38+ diagram th350 cooler lines in and out Sabtu, 18 Februari 2023 Edit. Trans Cooler Lines TH350 Engine & Drivetrain. TCI Automotive. All Dash; Top of Dash Panels; Windshield Repair Panels; View All; Doors. Remove these two fittings. org. Automatic Transmission Cooler Lines 5 Foot Length Flexible Braided Stainless Steel Black. 2 Wheel Drive 8 Cylinder 67-72: 1: $64. 3 V8 and TH350 transmission. Surface Studio vs iMac – Which Should You Pick? 5 Ways to Connect Wireless Headphones to TV. These exact reproductions come in pairs. the shift linkage, and detent should be the same, unless someone put in a shiftworks kit. So one is above the other inlet/outlet to the cooler. Automatic Transmission Cooler Lines, 7 Foot Length, Flexible, Braided Stainless Steel, PTFE, 4L60, 700R4, TH350, TH400, Pair. Rear Axle Chevy 350 Freeze Plug Diagram Turbo 350 Turbo Hydramatic Wikipedia May 12th, 2018 - Turbo Hydramatic or Turbo Hydra Matic is the. Remove these two fittings. Year. * Or ** after the sell price means your order will incur an Oversize Part Charge for each oversized part. [Stainless Steel] 13500 parts at JEGS. transmission has leaked out of the connection of the fill tube transmission since i bought it. All you have to do is crack open a line and crank over the engine. 4l60e Cooler Line Flow Direction. 14. 7L. Get it as soon as Thursday, Oct 19. note: diagram #2 cooler installation (see diagram #3) 1. Chevy 350 Oil Diagram Chevy Wiring Diagram Gallery. The reasoning was the radiator is cooler at the bottom. Add to Cart. Unlike a tappered pipe thread these will not crack the case. My sump temps when the output monitor is showing 220 is 170. Estimated Ship Date: Nov 28, 2023 (if ordered today) Oversize $19. Kind of confused on cooler line routing. Hayden's Transaver coolers are designed for the Transmission Repair Specialist but can be installed. Recently Viewed. Finally, Earl’s manufactures curved coolers that have a width of 11. 4L 4R75E Transmission: Check DTCs, Inspect Fluid Pan, Replace Transmission, Flush. Th350 installing transmission cooler lines and. If you are restoring the car, you'll probobly want a new crossmember that's not trimmed. It is a 355 with around 400hp and a 274 duration cam. #9, Center Lube (Fluid RETURN from cooler) Bottom line at the transmission. 82 out of 5 stars. Rather than poping the lines off my trans cooler and standing ready with a bucket while looking for the red spray with the motor running - I figured I'd ask if anyone knows which port on a TH350 is the pressure. By 201fireman January 27 2018 in Drivetrain Tech. 99Use 5/16 or 3/8 tubing. Stage 1 TH350 is reliable to over 500 HP/TQ. Stainless Braided Transmission Cooler Hose Line Kit Turbo 350 400 4L60E 700R4. Automatic Transmission Cooler Lines, Flexible, 60 in. this pressure helps to keep the fluid temperature steady and also prevents damage to the internal components of the transmission due to extreme wear or heat. jeepers creepers. . • transmission cooler lines • gear selector linkage • throttle (or kickdown) wiring, cables or linkage • speedometer cableBut to use an aluminum line that is designed as a carburated application fuel line for trans cooler line is asking for trouble. If you get a 3/4" thick unit it will not interfere with an open hood in the front. Exact fit for all 67, 68, and 69 models with an automatic TH 350 transmission. The Novak. And the overall length of transmission and adapter is 23. Loading Estimated Ship Date: Nov 27, 2023 if ordered today. Just in case anyone else ever needs the same info and does a search on here the fitting size is 1/2" x 20 inverted flare fitting (brake system fitting). Accessories and Parts. Close. Thoughts, suggestions? Turbo 350 Transmission Cooler Line Diagram. Clean out pan. Its identification, for instance, helps you to This 26 4l60e Transmission Cooler Lines Diagram – Wiring Database has px x px resolution. Was thinking to run along side the front of the cross member then to the frame to radiator. 1 post · Joined 2008. Gm turbo 350 performance transmission level 2Cable transmission tv diagram 700r4 350 turbo 700r adjustment shift trans rebuild guide chevy wiring gm 4r efi adjusting bracket Good diagram of the turbo 350 valve bodyTh350 routing radiator technical. "A" Fits Suburbans with small block and 4 bbl carburetor. Weve got a great one right here that will help you get the job done. Perhaps someone here can help. The most-effective verification technique is to temporarily bypass the cooler circuit and re-test. THM 350 cooler line ports. com. #1 · Mar 16, 2009 I have a TH350, and I've installed new cooling lines, have not started the car yet. Fitting Location - Flow Direction. The Bottom line is the Feed/Out which has pressure. 3. STEP 2 After placing the transmission in your work area, remove the torque converter unit. TH-350C Drum. Replacement Cooper Washers - AF59-3750. 700r4 Cooling Lines Trans Cooler Team Chevelle. I use the defective shafts for pin-punches. atomicjoe23. TH350 straight fitting (NPS) to trans case is 25 ft/lb, tapered (NPT) is 15 ft/lb. Disconnect the transmission cooler lines from the transmission. JASPER also offers a full line of transfer cases for both 4 wheel drive and all wheel drive applications. Radiator bottom to tranny top. The two brass fittings will have a NTP thread size. JEGS 113601K The transmission cooling line system is vital to any automatic transmission. Summit Racing™ Flexible Automatic Transmission Cooler Lines SUM-230322. View Turbo 350 (TH350) transmission cooler line diagrams and cooler flow path that route to the radiator and to an external transmission cooler. Upper - Return/in (Blue Line) Lower - Feed/out (Red Line) I've always ran my "Out" line of the transmission into the lower port of the radiator (and/or auxiliary) trans cooler. With this information, you should be able to confidently install and maintain your own turbo 350 transmission cooler lines with ease! TH350 Transmission Cooler Lines. I just had my TH350 rebuilt and was told the feed goes to the top of the radiator and the return goes to the bottom. Fittings were used to adapt from the 1/2" Heater hose on the cooler to 3/8" lines to travel to the 7. Cooling lines on turbo which is oil out, thus the fluid goes thru the trans cooler first then the aux cooler last. Opens in a new window or tab. This was my first time I did this and was a little late with filling the pan again. An extra trans cooler. On GM TH-200, TH-200R4, 4L80E and Ford AOD transmissions, this is the lower oil line to the transmission case. I checked a 6L80E GM service manual & a 6L80E ATSG manual, Same picture in both! All GM/Hydramatic RWD units are this way with the exception of the TH200 & 200-4R which. 1962-1974 Nova Transmission Lines Parts. Th400 cooler lines diagramTh350 vacuum line diagram Pit stop: automatic trans kickdown cables—are they really needed?Vacuum lines help. The first line goes from the vacuum port on the transmission to the vacuum modulator. The below transmission cooler installation diagram shows the transmission fluid flow direction and how the fluid will be routed through a new external cooler. Ford transmission cooler lines expedition diagram 150 f150 chevy 6r80 line 2004 2007 2006. Aftermarket building techniques take it well past that figure. The GM TH350 adapter to the Dana 18 / 20 is a short 1. Awasome Th400 Cooler Lines Diagram References. Web if youre working on your chevy and need a transmission cooler lines diagram youre in luck. Diagram Th350 Cooler Lines In And Out. i dont believe in cross threading stuff, but some people do, save enough to replace the cracked trans case. Register or Log In To remove these advertisements. No "H"es, no valves, just route it your way down south and my way up north and all is good. As already mentioned, the flow direction of the transmission cooler is such that the top hose attachment is the hotline, and the bottom one is the cold line. Web modern cars have a one way valve in the cooler lines. there is a top/bottom. Optimal transmission temp is about. Shop Now at the Guaranteed Lowest Price!. Have someone watch it. $71. Transmission Coolers. Sold as a 2 piece set, both are 5/16" in diameter. 10+ diagram th350 cooler lines in and out - LuceeInayat. He had no specific advise on the tubes with the exception of me making a diagram of what I need and sending it to them. Dorman Transmission Oil Cooler. mine were taken off years ago and not sure how to route them up to the. Diagram Turbo 350' 'This is an old draft of some TH400 oil pump technical May. PART NUMBER: TRA-2195. I really need to monitor trans oil temperature in some races and i would like to fit a sensor (the best would be 1/8 NPT thread) somewhere into the transmission or at the beginning of the oil line to the cooler. 12”, 9. th350 cooler line pressure the cooler line pressure on a. Dorman offers hundreds of transmission oil cooler lines to help repair leaking, rusted or clogged lines and keep transmissions running properly. Add to Cart. Source: xolia. (Next to the oil pan, looking up towards the bottom of the engine. com, but there are two lines im unsure about. Increased line pressure and lube flow. 3's steel lines. (OS1) $53. 2. Th350 Oil Flow Diagram Th350 Oil Flow Diagram ATI Racing Transmission Front Pumps and Super Pumps. If you run a pipe threaded fitting into it you can or most likely will crack the case. This car didn't have the trans lines when I bought it. of input torque. Radiator Adapters. 42s. Find Classic Tube Automatic Transmission Cooler Lines and get Free Shipping on Orders Over $109 at Summit Racing! Classic Tube automatic transmission cooler lines are constructed from pre-bent steel, stainless steel, or aluminum tubing, or rubber lines. if your trans has the fac. Posted on april 26, 2023 by admin. Optimal transmission temp is about. Th350 Oil Flow Diagram Cooling lines on turbo 350 which is oil out which is return May 13th, 2018 - Welcome to Club Hot Rod Cooling lines on turbo 350 which is. This TH350 is in need of a MAJOR REBUILD! Also a lesson on transmission additive and what it does. 99. If you try to run a rubber hose the full length the hose will eventually get soft and suck together which will not allow vacuum to get to the transmission. 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). Register or Log In To remove these advertisements. As the transmission is raised into position, slide it over the dowel pins. Page 2 of 2 < Prev 1 2. Automatic Transmission Cooler Line, Stock, Steel/Rubber, Each. By using an electric gauge with a switch and three senders I can monitor feed out to the cooler, cooler return, and sump as I choose to. 6. The lower line will go to waste, but this. 2. Dash. Transmission Cooler Hose Line 70 Inch Flexible Stainless Steel SS Braided Oil Fuel Line Compatible with GM Chevy 1996 & Newer 4L80E 700R4 4L60 4L60E 4L65E,Turbo 350 400 200-200R4 Dorman 624-284 Automatic Transmission Oil Cooler Hose Assembly Compatible with Select Chrysler/Dodge/Ram Models, Silver 32,966. SHARE POST #19. #2 · Dec 10, 2021 vics63 said: I've searched here and elsewhere for hours on end and can't find a definitive answer. Th350 Oil Flow Diagram zinstv de. Without the vacuum line attached it will always shift like it is running at wot, even. (top or bottom on tranny) Ag. 8 out of 5 starsAuto Technician. 87 Grand National. The top line is the line that the fluid goes into the cooler. . Reply Quote. First, make sure you use a barbed fitting to tie into your existing lines. DesignWeb diagram th350 cooler lines in and out thursday, october 27, 2022 edit. 1966-67 Transmission Cooler Lines for Power Glide or Turbo 350 or 400, Stainless Steel. Register or Log In To remove these advertisements. read more. You also have to consider all new vehicles run 200-210* with only radiator coolers and last 200k. I bought the XTC7001 pre bent cooler lines from SS396 and they don't seem to be close to fitting without modifying. Rather than poping the lines off my trans cooler and standing ready with a bucket while looking for the red spray with the motor running - I figured I'd ask if anyone knows which port on a TH350 is the pressure. Or email us using our CONTACT link above. i tried a new rubber o ring still leaks. Joined Nov 12, 2004 Posts 6,828. The rpm range is 1800-6000 rpm advertised. , it is very important to determine the send line and which line is the return line on a 4l60e transmission (inlet and outlet). $69. NEW HAYDEN 1403 TRANSAVER TRANSMISSION OIL COOLER. Finally, Earl’s manufactures curved coolers that have a width of 11. ) The cooler comes standard with a fan for great cooling ability even at low speeds and in remote mounted areas. , Stainless Steel, 4L60, 700R4, TH350, TH400, Pair. 4sp w/GV, AC,PS,3. The cooler of the two lines is the return line and the one to install the transmission cooler on. The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Engine & Drivetrain: Trans Cooler Lines TH350Find 1970 CHEVROLET CHEVELLE Fluid Cooler Lines and get Free Shipping on Orders Over $109 at Summit Racing! $5 Off Your $100 Mobile App Purchase. GM TH350, TH400, and TH700R4 / 4L60 (not including 4L60E / electronic shift models) B&M part numbers: 102002 - 103005 - 107101 - 107104. Fits 19661967 Chevrolet Chevelle 19661967 Chevrolet El Camino. Disconnect the transmission cooler lines from the transmission. The common thought of hooking to the top on a radiator trans oil cooler does not apply. Be gentle with the pressure though so as not to blow out your cooler matrix. Call 800. This enables the fluid to rise and push the air out of the rad cooler. the dipstick is made from two different. Im sure someone will come along that knows which line is pressure and which is return. engine blueprints Turbo 350 Diagram Cooling lines on turbo 350 which is oil out which is return May 13th, 2018 - Welcome to Club Hot Rod Cooling. I plan to go with hard lines and wondering the best routing configuration to keep it looking clean. transmission has leaked out of the connection of the fill tube transmission since i bought it. 95. Stainless Steel Braided Hose. Front ¼" Pipe Cooler feed/out. The turbo350 uses two brass fittings for the steel cooler lines to screw into. Welcome Guest Log In. This pertains to a powerglide, but I assume it would be the same for a th-350.