lines; b) replace the torque converter; and c) replace any auxiliary transmission cooler(s) (if applicable). For questions or to place an order by phone, please call our solutions desk at (888) 324-1617 8AM-6PM PST (West Coast USA). Web pour at least 1 quart of clean atf slowly into the torque converter. Welcome to our blog, where we dive into the fascinating world of life knowledge, exploring topics ranging from scientific and. Part No GVW SIZE. This 2 piece OE steel transmission cooler line set fits 1972 Cutlass and 442 with TH350 transmission. On a hot engine the fluid going into the top of the trans cooler is hotter that the fluid coming out the bottom. Born 283 / PG / A51. Fitting Location Thread Size Flow Direction. Fitting Location : Thread Size: Flow Direction: Upper: 1 / 8 ” Pipe: Return/in: Lower: 1 / 8 ” Pipe. View Turbo 350 (TH350) transmission cooler line diagrams and cooler flow path that route to the radiator and to an external transmission cooler. (Passenger Side) You can see here that the bottom line has the "valve" on it. 69 Chevelle Malibu 400/TH400 (136379Z328013) 67 Camaro Coupe 327 - Sold 26:th of Aug 2014. Derale Combination Transmission and Engine Oil Cooler with Multiple Threads (15 reviews) Code: D15902. Stick with the factory brass fittings and get the inverted flare to -6AN that fits into those. Off-road applications receive an 18 month/100,000 mile parts and labor warranty. kaiserbud, If the transmission cooler is in the side tank of the radiator, the fluid should go into the cooler at the bottom and out at the top, and then back to the upper fitting on the transmission. These lines are spaced 12-1/2" from fitting to fitting on radiator side. Retail: $23. Get the Best Performance with JEGS Automatic Transmission Cooler Line Kit for GM TH350/TH400/700R4 113601K parts at JEGS. Contact us for advertising partnerships and become collaborator: [email protected]Wiring Diagrams. The second line goes from the modulator to the vacuum canister. #5 · sep 27, 2012. 8 out of 5 stars 10 Diagram Th350 Cooler Lines In And Out Luceeinayat. One 45 Degree and one 90 Degree put the right angle I needed to get the hose to the cooler. Hello. Does anyone have pictures of their trans cooler lines from a TH350 or TH400My Nova is a 1970. Ford Transmission Cooler Fittings. Even better than that, one could dream up a thermostat controlled line system where NONE of the fluid goes to the radiator or external cooler until it warms up. 95 $ 69. 1. in this thread in this sub-forum in the entire site. Web so i'm working on swapping a th350 into my car,. It circulates the hot fluid away to the radiator via cooler lines and returns the cooled fluid back to the transmission. STEP 10: Install drive shaft (and torque arm if used). Stage 1 TH350 – 500+ HP/TQ. Antergos. NPT Threads on Case. Diagram Turbo 350' 'This is an old draft of some TH400 oil pump technical May. Compare. Easy way to find out is use a compressed air line on them both and see if one way flows and the other doesn't. Replacement Cooper Washers - AF59-3750. If the transmission cooler runs horizontally, it doesn't matter whether the trans fluid runs to the left or to the right. 5/16 lines, you can also use flare to AN. Transmission Coolers. Cooper washers included. For those who are interested…. A good rule of thumb is run a least a by past line. 440-T4 (4T60)/ 4T60E . Port Spacing [Stainless Steel] (0) $49. Compare. Hello all. mine were taken off years ago and not sure how to route them up to the. Cooler Lines Catalog Number Transmission oil cooler lines are INLET ? Assembly carries flow of oil IN to cooler from engine Browse and Read Th350 Oil Flow Diagram Th350 Oil Flow Diagram New updated The latest book from a very famous author finally comes out Book of th350 oil flow diagram as an. #2 · Dec 10, 2021 vics63 said: I've searched here and elsewhere for hours on end and can't find a definitive answer. DaddyJeep Garage 913 subscribers 6. Part Number: SUM-230321 4. Transmission Cooler Lines, TH400. Disconnect the transmission cooler lines from the transmission. If you are searching about Turbo 350 vacuum line hook up help wiring lockup on th350c. Th350 Oil Flow Diagram zinstv de. 10 Diagram Th350 Cooler Lines In And Out Luceeinayat Chevy 350 with a th350 transmission. #6 · Aug 19, 2009. Disconnect the transmission cooler lines from the transmission. 99 (Each) Add To Cart. I made new lines and installed a cooler when I installed the tranny. The TH400 is an automatic shift, three-speed, longitudinally positioned transmission. Tony. Converter weights will be similar for a given combination with the same size converter. The turbo350 uses two brass fittings for the steel cooler lines to screw into. 1 - 4 of 4 Posts. Combined Cancer/Birth Defect WARNING This product can expose you to chemicals including Cadmium which is known to the State of California to cause cancer on birth defects or other reproductive harm. Web if youre working on your chevy and need a transmission cooler lines diagram youre in luck. org on 2022-01-08 by guest builder and technical writer David Vizard turns his attention to extracting serious horsepower from small-block Chevy engines while doing it on a budget. Car Problems & Safety. Joined apr 2, 2013. Material: Steel. 2602 posts · Joined 2004. 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. Joined: Oct 1, 2015. Radiator with side tanks: Bottom = Feed/In from bottom Trans line. Diagram Th350 Cooler Lines In And Out. What. Turbo 350 diagram turbo 350 transmission rebuild manual. #2 · Sep 27, 2012. It was introduced for the 1965 model year and made its debut in Cadillacs, and is respected for its durability and adaptability. Web it says that the top line is the return line. As the transmission is raised into position, slide it over the dowel pins. Description: Turbo 350 or 400 small block with radiator mounted in front of core support. The Novak Guide to the GM TH350 Automatic Transmission. This diagram provides a clear and concise visual guide for properly routing the cooler lines during installation or replacement. Part Number: RSD-FTV7801. Joined: Oct 1, 2015 Posts: 7,590. Joined Nov 12, 2004 Posts 6,828. comSurface Studio vs iMac – Which Should You Pick? 5 Ways to Connect Wireless Headphones to TV. Get it as soon as Thursday, Oct 19. Item #: OCL006. SKU # 836323. Once all of the fasteners are installed, tighten the crossmember bolts first, and then tighten the bolts to the transmission rear. You will need to determine which line is the return for the transmission. 6L/5. GM TH400 Automatic Transmission. I ordered new parts from europarts-sd. Mechanics, Ag. These work great for all TH-350 automatic transmission models. trans cooler lines for a 1970 TH350. Add To Cart. 8 Hrs. Automatic Transmission Cooler Lines, Steel, Chevy, TH350, Pair. . theaoi. 2. transmission has leaked out of the connection of the fill tube transmission since i bought it. The lower line from the TH350, 400, or powerglide tranny is out. Turbo 350 Transmission Cooler Line Diagram. 919 inches. Our Price: $10. { a 350 has a ball and seat that blows off to let oil circlale. 4L80E (1991-1996) Fitting Location Thread Size Flow Direction. Buy POWERWORKS Stainless Steel Flexible Braided Transmission Cooler Hoses/Line 52”Length compatible with TH350 700R4 TH400: Cooling Lines - Amazon. Pan, Replace Transmission, Flush Cooler/Cooler Lines, Includes Time To Remove And Install Transmission And Post Road Test (Do Not Use With Any Other Labor Operations Except C When Required) 3. If there is a justified reason I'd like to know why. TH 350 cooler line oil flow Hot Rod. Source – Inline Tube. Or email us using our CONTACT link above. This enables the fluid to rise and push the air out of the rad cooler. It circulates the hot fluid away to the radiator via cooler lines and returns the cooled fluid back to the transmission. Remove the old lines and replace them with new ones. CONCLUSION: On a cold engine/transmission the trans cooler is actually warming the returning trans fluid. Best Transmission Coolers The Complete Guide Video $135. Racing heavily stresses the transmission and causes it to heat very rapidly. Automatic Transmission Cooler Line, Stock, Steel/Rubber, Each. Surface Studio vs iMac – Which Should You Pick? 5 Ways to Connect Wireless Headphones to TV. it the moment I will consider. The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM. 10 Diagram Th350 Cooler Lines In And Out Luceeinayat. the "top hat" did not fit properly, i had to shorten it. Splice your toggle switch inline after the brake pedal switch and your good to go. When I installed the lines, I put the top cooling line from the. Advance Adapter. Lower ⅛" Pipe Cooler feed/out. #2 · Oct 3, 2006. A worn-out TV cable or a faulty adjustment is another common issue on the 700r4 transmission. The two brass fittings will have a NTP thread size. Limited-Lifetime Warranty. The way @baldilocks explains it the cooling goes: Hot oil from the transmission to the passenger side bottom radiator. Disclaimer: Under no circumstances will proclaimliberty2000 be responsible or liable in. . The TH400 is an aluminum cased three speed automatic transmission that was produced by GM. There are in (inlet) and out (outlet) lines. NPSM or 1/4 in. Which Transmission Fluid Line of Turbo 350 is Return Line. 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. This line runs to the lower rad fitting. Finally, Earl’s manufactures curved coolers that have a width of 11. de. Web which line is the outgoing line to the tranny cooler on a th350, the upper or lower. 0 Powerstroke Transmission Cooler Lines Diagram is a detailed illustration of the transmission cooler lines for the 6. 1. It varies due to converter size, pan depth, cooler and line size, fresh build or service, and other variables. They list: Transmission Cooler Pipe. ) The cooler comes standard with a fan for great cooling ability even at low speeds and in remote mounted areas. park neutral position switch4l60e wiring diagram 4l60e tcc wiring diagram4 images 4l60e transmission cooler lines diagram and view. identify the 4 mounting rods, 4 mounting clips and 4 1x1 foam pads. Unlike GM’s factory six-speeds, which are ‘double overdrive’ with both fifth and sixth gears. I am in the middle of a thrash to get my car running before the end of July and man, the nice stainless hard lines I bought for a 350 look like. Powerglide - Dedenbear. I plan to go with hard lines and wondering the best routing configuration to keep it looking clean. 5/16″. Make sure to adjust the TV cable with the video’s help. Rear. Acemechanic. Bottom line goes to upper Rad port. Th-350 Trans Cooler Routing The 1967 - 1972 Chevrolet & GMC Pickups Message Board. Fittings were used to adapt from the 1/2" Heater hose on the cooler to 3/8" lines to travel to the 7. 66 SS 396. 9) Plug in reverse feed to center support w/ . In this video we'll be installing a new Trick Flow aluminum deep transmission pan on my turbo 350 transmission along with a Lubelocker pan gasket, filter, an. This TH350 is in need of a MAJOR REBUILD! Also a lesson on transmission additive and what it does. . Although the name later had to be changed because Peugeot had patented having a 0 in the middle of car model numbers, the 911 didn't let anything stand in the way of its becoming an iconic sports car. Stainless Steel Braided Hose. 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. th 350 cooler line oil flow hot rod forum. 4l60e Cooler Line Flow Direction. Excessive heat kills transmission and torque converter components . GM TH350, TH400, and TH700R4 / 4L60 (not including 4L60E / electronic shift models) B&M part numbers: 102002 - 103005 - 107101 - 107104. "A" Fits Suburbans with small block and 4 bbl carburetor. Th350 Transmission Parts Diagram. This line runs to the lower rad fitting. jeepers creepers. Diagram Manual Gm Turbo 350 Transmission Diagram. Note: This location is recom-mended to monitor the true transmission temperature going in, as well as checking the oil cooler efficiency. New paint -near complete. It circulates the hot fluid away to the radiator via cooler lines and returns the cooled fluid back to the transmission. Slide the transmission forward on the alignment studs and onto the dowel pins. ** Means extra charge will be $50. Was thinking to run along side the front of the cross member then. #1. Need to replace all my Transmission lines because the previous owner cut them and replaced with basic tubing. "A" Fits models with TH350 or TH400 transmission. Remove the skid plate and the splash guard (if applicable). Engine: 6 Cyl 5. GMOTM Winner. o The upper transmission coolant line on the TH-350C transmission is the return side (cooled fluid returning from the radiator). Correct for 1964-67. These are often bent or twisted. Posted on August 29, 2013 1:30 pm by. Th400 cooler lines diagramTh350 vacuum line diagram Pit stop: automatic trans kickdown cables—are they really needed?Vacuum lines help. Next, install it on the return side, after the factory cooler. Th350 transmission diagramTransmission turbo rebuild diagram modify book chevy details 4l80e-jpg. (4) 6AN 90* Hose Ends. 99. Web if youre working on your chevy and need a transmission cooler lines diagram youre in luck. Th350 powerglide trifive Turbo 350 vacuum line hook up Transmission th350 lockup hydramatic Th350 vacuum line diagram. Welcome Guest. Outer line furthest from converter: Web find fluid cooler lines th350 transmission model and get free shipping on orders over $109 at summit racing! 1970 315hp/410ftlb buick 350 code sp stock w/ 800cfm qjet and crower level 3 cam (rip) and th350 #2 (rip). We use ni copp for the lines. 1964-1977 Chevy El Camino Transmission Cooler Hose Kit. one by one, install the 4 mounting rods thru the transmission cooler. Most applications require two fittings. Are your transmission cooler lines leaking? This video is here to help you perform a quick, easy, and dirty repair to STOP them from leaking. I bought a set of "1958-1963 Chevy Automatic Transmission Oil Cooling Lines Turbo Hydra-Matic 350 & 400" from Eckler's but since the car was not a stock auto, I am not sure how the lines route. 73 True Trac, full disc. 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. e. The cooler of the two lines is the return line and the one to install the transmission cooler on. Automatic Transmission Cooler Lines, Flexible, 60 in. Since I do not drive my cars in Freezing weather I have never hooked up the Trans lines to the Rad, just to the Trans Cooler as I see no reason to heating up the Trans Fluid with the hot Rad Fluid. You put more strain on the transmission pump. Our Price: $10. 2 Pc Kit – OE Steel . The PR valve limits or regulates pressures to the common 50-250 psi range seen in transmissions. Part #: FTV6703 | Manufacturer Part #: FTV6703. Fits ST300, TH350 & TH400. Worth repeating: Modulator O-ring. Derale. View Turbo 350 (TH350) transmission cooler line diagrams and cooler flow path that route to the radiator and to an external transmission cooler. Upper ¼ Pipe Returnin. 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. The factory thread in the case doesnt have the pipe thread taper. 95. Wiring Diagrams. The Top line is Return/In, it doesn't have suction so some fluid may flow out there. Thoughts, suggestions? Turbo 350 Transmission Cooler Line Diagram. 1962-1974 Nova Transmission Lines Parts. The 4l60e transmission cooler line flow is very easy to follow. of input torque. 7K views 2 years ago Replacing the kinked and leaking steel transmission cooler lines with NiCopp lines. Part Number: RNB-624-051. 4. The “extra wide” coolers from Earl’s have a width of 15¼ inches and heights range from 2 to 18½-inches. TH200/200-4R . 8 out of 5 stars twotone64. Notes: We can get the TH350 Trans Cooler Lines also or have them Drop Shipped. This effect varies with 46 or 47 RH/RE cooler lines and may become a problem as head pressure nears 80 psi or more (see Figure 2 ). I'm getting some 1/2" x 20-to-AN6 adapters from Jeg's so that I can use my leftover AN6 hose and fittings to make new transmission cooler lines from the TH350 to the radiator. I really do not want to go through the hassle of bending hard lines to fit. Have someone watch it. Reply Quote. The 6. 31 Posi,ft disc,11" r drum. The Bottom line is the Feed/Out which has pressure. The vacuum line diagram for the turbo 350 transmission is pretty simple. 5”, 8”. Th350 Cooler Lines Diagram 3 3 marked↵ a milestone in automotive history. Oldsmobile. The 200-4R is a 4-speed automatic overdrive transmission by GM, capable of fitting into most Chevy’s from the 80s and before, built similarly to the TH200 and TH350, as well as the 2-speed Powerglide. Parts fit for the following vehicle options. 99. 99. 95. Same day shipping. This kit uses Fragola Made in the USA lines and fittings! GM TH350, TH400, 700R4, 4L60E DERALE Trans Cooler Kit w/Fan & Fragola Lines/Fittings This kit allows you to grab everything you need to plumb up a very efficient transmission. Add To Cart. 1403 18,000 12” X 7 ½”. Top = Return/Out to top Trans line. 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. TH-350C Drive Shell. 34-5695. org. 67 Chevelle Malibu SS Cdn. We have 9 Images. Buy 1968-1982 Corvette Transmission Cooler & Lines online at Zip. The Novak. Th350 Oil Flow Diagram Pdf. Th350 installing transmission cooler lines and. 1979 Firebird and Trans Am Transmission Cooler Line Set for Olds 403 Engine Turbo 350, 5/16" Stainless Steel. Basically bottom to bottom and top to top in theory. Posted by Transmission Diagram (Author) 2023-09-28 Turbo 350c. If the PG cooler lines can be "massaged" to. transmission cooling line system is vital to any automatic transmission. Most popular models are in stock for immediate availability and come with a 3 year/100,000 mile Nationwide Transferable Warranty — Parts and Labor. The below transmission cooler installation diagram shows the transmission fluid flow direction and how the fluid will be routed through a new external cooler. Perhaps someone here can help. I am attaching the info below on how to flush the cooler. All Doors; Door Hardware; Door Hinges and Latches;. Cooler th400 gm 700r th350 4l60 rebuild 700r4 transmissions reverse pickup k1500 truckforum 4l65 fti r42001. If you run a pipe threaded fitting into it you can or most likely will crack the case. Discussion in 'Traditional Hot Rods' started by TBonez, Mar 20, 2017. Flared line case fitting #M462C. With the cooler installed and the hoses attached, I was in business to keep that TH400 nice and cool with a clean look and top. Optimal transmission temp is about. The aux cooler should be mounted in such a fashion as to not trap air. A little over 2 years ago we did the 6. $24. The OEM tranny case fitting is made to work w/an inverted flare fitting on the cooler line, using a formed flare on the tubing. 2 Wheel Drive 8 Cylinder 67-72: 1: $64. I just flushed my 700 by draining the return line from the cooler. Front ¼" Pipe Cooler feed/out. th350 cooler line pressure the cooler line pressure on a th350 transmission is typically set between 40 and 50 psi. Drain transmission fluid from pan, and. Basically, any cooler with a face height up to 18½ inches can be created. Right now I have it running top line in. My trans book says the th350 upper fitting is the return line. We use Ni-Copp for the lines. O-Ring. 562-inches and a height from 3. 10+ diagram th350 cooler lines in and out LuceeInayat from luceeinayat. Powerglide - Dedenbear. Make sure the transmission is cool, as the fluid inside the unit can be very hot. Remove these two fittings. Th350 lock up wiring diagram. These exact reproductions come in pairs. - 8 in. Chevy 350 Parts Diagram ImageResizerTool Com. Th cooling line diagram On my truck I am using rubber tranny cooler lines form the tranny all the way to the radiator. As the transmission is raised into position, slide it over the dowel pins. Cooling lines on turbo 350 which is oil out which is return May 13th, 2018 - Welcome to Club Hot Rod. Reply With Quote. This is also the area where the cooler lines attach. 1968-72 Trans Cooler Line with Turbo 350,Original Material. 1. Should be in the top, out the bottom, through your cooler then to your radiator. 2 Line set with 1/2" fitting at radiator. No "H"es, no valves, just route it your way down south and my way up north and all is good. Thats how I remember the Turbo 350 Trans lines. Usually I will only cut one side of the tubing and then I only have one side to flare. However, that’s just a rule of thumb, so it could be the other. It has several key modifications that increase it’s strength. PART NUMBER: TRA-2195. As I recall top line is the return. 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. Transmission Cooler Lines-Stainless Steel-2 Piece "A" "A" Fits models with TH350 or TH400 transmission. Diagram Th350 Cooler Lines In And Out diagram-th350-cooler-lines-in-and-out 2 Downloaded from staging. seeing the corrolation of my personal S15 with 350 and 700R4 your outlet temps are comparable to mine. Malibu w/TH350 Trans. STEP 3 The stock valve body from transmission must be replaced with BTE 321500 unit. It is best to use a metal line for all but the connections at the modulator valve and if necessary at the intake manifold. We have a great online selection at the lowest prices with Fast & Free shipping on many items!. 25 th350 valve body diagramTh350 vacuum line. Web modern cars have a one way valve in the cooler lines. T 350 cooler lines Hot Rod Forum Hotrodders. Note: This location is recom-mended to monitor the true transmission temperature going in, as well as checking the oil cooler efficiency. The TH350 is rebuilt stock with shift kit and a Saturday night special tci converter. com 1978 - 1981 Firebird and Trans Am Transmission Cooler Line Set for Turbo 350, 5/16" Original Steel New transmission cooler lines for your 78 - 81 Firebird or Trans Am. * TH-200-4R (1986-1988): DaddyJeep Garage 913 subscribers 6. The two brass fittings will have a NTP thread size. 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. 215. December 4, 2022. TH350 transmission troubleshooting help TH350 rebuilding. Automatic Transmission cooler line flow. ( 1 ) Estimated Ship Date: Nov 27, 2023 (if ordered today) Special Order. NEW HAYDEN 1403 TRANSAVER TRANSMISSION OIL COOLER. From the upper rad cooler fitting run a line to the aux cooler. Register or Log In To remove these advertisements. Clean the case and make sure the hole isn't wallowed out. Powerglide - OEM. Here is a list of steps that will help you to identify the. [Stainless Steel] 13221 parts at JEGS. Diagram Manual Gm Turbo 350 Transmission Diagram On a turbo 350 transmission you have the upper and lower transmission cooler lines on pass side of the car which one is the sender, and which is the return? reply quote 1 5 of 5 posts pops @ tri 5 58450 posts · joined 2008 #2 · mar 21, 2022 fitting location flow direction upper return in (blue. 1967 - 1969 Firebird Turbo 350 Automatic Transmission Cooler Lines Set, OE Steel : Our Price: $ 57. Reply Quote. Fitting Location Thread Size Flow Direction. TH350 trans to radiator cooling lines questions The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board Register or Log In To remove these advertisements. Thnx that line is your vacuum modulator line. tor and shifter cable. To use the wrench, slide the open end of the wrench over the cooler line, then slide the wrench down the line until it reaches the nut used to secure the line to the transmission. JEGS 113601K Part Number: 555-113601K. Big-block vehicles with headers may need to modify the lines to fit. I use the defective shafts for pin-punches. Fits 1970–1972 Chevrolet Monte Carlo, , , , , , , . Turbo 350 transmission cooler line diagram. TH-350C Case. tranny cooler lines backwards The 1967 - 1972 Chevrolet & GMC Pickups Message Board. Born 283 / PG / A51. I have pulled out the subframe and have a few pictures of the colling lines on my car. This 26 4l60e Transmission Cooler Lines Diagram – Wiring Database has px x Lower line out of TH to the lower radiator trans cooler fitting. You want the already warm fluid to flow into the external cooler to help better control fluid temperatures, so. If you get a 3/4" thick unit it will not interfere with an open hood in the front. nvaccess. 2. Worn-out TV cable/adjustment. While Gearstar's entry Level 2 TH350 (left) will handle 450hp, Gearstar's Level 4 will handle even more and is rated to 700hp. All Powerglide, TH350, TH400, 700R4, 4L60E, 4L65E, 4L80E, 4L85E, the bottom fitting is the pressure side, the top fitting is the return.