silverado transmission cooler line size

Looking at one of these now that I think about it, it was 5/16th female inverted flare. Reviewed in the United States . I think that's a little bigI'm talking about the metal lines that go to the cooler in the radiator.. 2003 s10 extcab Im second owner with 73k miles. 1988 GMC 1500 Pickup 4WD The reason for this is because the 4L60E has a very small oil pan, and if your cooler line size is too small, it can cause your transmission to overheat and eventually fail. Always use safety belts and the correct child restraints for your child's age and size, even in vehicles equipped with air bags. If so, does the trans loose heating ability while in frigid conditions in regards to cold starts (if this is even a concern)? Select a store to see pricing & availability or search by City & State or Zip: Limited Lifetime Warranty. Motivated by a 5.3 Liter V8 offering 355hp to a 10 Speed Automatic transmission. Its best to use a cooler appropriately sized for the vehicle. following a Chevy transmission cooler lines diagram is easy and will help keep your car running smoothly for years to come. The size of the transmission cooler fitting on a radiator will vary depending on your specific make and model. 4L80E to -6 AN, 4L80E, 4L85E, 1997 -2008, Pair, 3.5 out of 5 stars Model Code: 8376. How effective is the stacked plate, modular design in comparison to a more common tube-and-fin arrangement? Inverted Flare, Buick, Chevy, Each, Transmission Line Adapter, Brass, Snap-In, Each, 4.75 out of 5 stars The 4L60E has since become one of the most popular transmissions in the US automotive market. The transmission cooler lines are made of metal and connect to the radiator at the Transmission Cooler Inlet and Outlet. Thats why its so important to keep them in good working order. Included is a pair of brackets (with integral rubber cushions) and e-coated aircraft quality hardware with rubber insulators spacers. 5.3 engine with lots of power and don't have time or money to replace whole line set. 1990 Chevy 2500 Pickup 2WD ( 16 ), Transmission Line Adapter Fittings, 1/4 in. Earls offers this bracket system for all of their Temp-A-Cure cooler models. Before purchasing replacement lines for your vehicles transmission cooler system it is important to double check the exact size you will need so that they fit properly with no leakage issues. ATE Blue Brake Fluid. Reply. Silverado and noticed a hose over the drive shaft Test drive this Used White 2021 Chevrolet Silverado 1500 1GCPWDED7MZ389592 & experience the Bomnin Chevrolet Dadeland difference today near Hiealeah, Dadeland and Kendall. As weve already mentioned, its impossible to overcool an automatic transmission. 1990 GMC 1500 Pickup 4WD 1993 GMC 2500 Pickup 4WD This Four Wheel Drive truck flaunts commanding capability with a high-capacity suspension and Autotrac . My rig is a 1998 2 door, 4wd. Naturally, this might not apply to vehicles operating near the Arctic Circle, but in the rest of the world, it basically holds true. ( 3 ), Transmission Line Adapters, Brass, 5/8 in. In conclusion, if you own a GM car with a 4L60E transmission, its very important to keep an eye on your transmission cooler line size . One popular option is to install an aftermarket cooling kit. Drag illustration to view more parts. Seems to be a lot of confusion on this.5/163/8. Along with the narrow coolers, you can purchase wide body coolers. To remove the transmission cooler lines, use a wrench to loosen the bolts and then pull the lines off of the radiator. Hes authored five how-to books and written over 4,500 tech articles that have appeared in sixty different high performance automotive, motorcycle and aviation magazines worldwide. the hard part will be getting a bubble flare fitting when you take off the slip connector, I just did this on a 91 that doesnt have a slip fitting at the rad and no one stocked the correct size bubble flare fitting except the Parker store at 11 dollars each. But that's exactly what I did and guess you've seen my thread. I'm replacing the front right (passenger) * Means extra charge will be $20. Print Vehicle Details. First pull the plastic cover back ..Take a small pick and get the wire e clip off in the fitting dont lose it you can put the clip back on after the line is off and it will pop back in. Now, youre probably saying: theres a big difference between the conditions seen in an aircraft and those experienced by my street driven car. Thats true, but these old war birds were subsonic and piston powered. ( 3 ), Transmission Line Adapters, Brass, 5/8 in. The cooler I'm looking at is from Derale. . I do recommend using high pressure clamps. Thicker lines will provide more cooling capability but can take up more space under the hood or in a transmission pan. Typically, there are two types of cooler styles available: tube-and-fin and the stacked plate cooler. Come join the discussion about performance, modifications, troubleshooting, maintenance, and more! Quick-connect Female Threads, Steel, Natural, GM, Hummer, Each, 5.0 out of 5 stars Save Vehicle Value Your Trade Get Pre-Approved. Weve got all the info you need on coolant lines for Chevrolet transmissions, so you can get your car back on the road in no time. OM = Original Material JavaScript is disabled. Its stout, secure and light. Hard lines are made of metal and connect directly to the radiator. This information puts a nail in the coffin. For these reasons, metal lines are the preferred choice for transmission cooling systems as they will last much longer and provide better performance in the long run. The "extra wide" coolers from Earl's have a width of 15 inches and heights range from 2 to 18-inches. In fact, Earls offers a wide array of coolers to suit almost any application. Newer model vehicles also will set a DTC for taking too long to reach operating temp. By factory default, it relies only on internal radiator for its cooling. The best method is to have the ports on the top. The issue started when I could not easily remove the threaded hex nut line . It is important to check your owners manual for the correct size line that should be used for your particular vehicle. In most cases, the aluminum exchangers are nearly as thermally efficient as the copper and brass versions, but significantly lighter. Filter Results . But before you rush out and buy the first cooler available, heres an example to ponder: Decades ago, webuilt an L88 powered 1969 Camaro complete with a turbo 400, a 12-bolt filled with 4.88:1 gears and an 8-inch torque converter. NPT, Steel, Chevrolet, 4L80E, Each, Transmission Line Adapter Fitting, Oil Cooler End Fitting, Steel, Natural, Buick, Cadillac, Chevy, GMC, Each, Transmission Line Connector - Tube Size 1/2 - Thread 9/16-18 UNF, Fittings, Transmission Oil Cooler, Brass, Natural, Male, Chevrolet, Automatic Transmission, Pair, Estimated Ship Date: Another thing to consider is the paint. Manufactured from aluminum, this bracket is designed to hold the cooler securely without damage from vibration. Typically, a modular cooler (such as the Earls coolers shown in the photos below) will reject as much as three times the heat for a given area than a tube-and-fin cooler. SS = Stainless Steel. looks like that kit comes with two 5/16th female inverted flare to 1/4" barb, which is what I used to go to my 1/4" pipe fitting on the mustang radiator I used. Save my name, email, and website in this browser for the next time I comment. The 4L60E is a four-speed automatic transmission designed for longitudinal engine applications. If youre asking which transmission cooler line is which on your vehicle, the answer may vary depending on the make and model. And thats all there is to finding and using a 2004 Silverado transmission cooler line diagram! Customer Cash $250. What you need to know about GM Chevy transmission cooler line removal.Disclaimer: Under no circumstances will proclaimliberty2000 be responsible or liable in. Yeah, wagon has it right.5/8" 18 and is inverted flare fitting. Thisold Rolls Royce Merlin design is the most thermally efficient liquid-to-air heat exchanger format available. "C" Fits 5.0L models with 140 amp alternator. side brake hose on my 2004 Chevy Parker had them, The rad cooler stays. Join to discuss rebuilds, modifications, tech articles and more! Tube Size (in): 5/16 Inch. 1996 GMC 1500 Pickup 2WD 1992 Chevy 1500 Pickup 2WD $5 Off Your $100 Mobile App Purchase - Get the App. You can find a transmission cooler line set for trucks like. Wheel 17 x 8 (43.2 cm x 20.3 cm) full-size steel spare. Both lines are used to return fluid to the transmission cooler. It is important to use properly sized transmission coolers for optimal performance as too large a line may cause pressure drops resulting in poor cooling efficiency. $5 Off Your $100 Mobile App Purchase - Get the App. 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 lin So from the Trans Case all the way up to the Cooler and removing the Stock Hardline? 2007.5 GMT-900 Chevrolet Silverado 2500HD CC/LB LTZ 4x4 Summit White. ( 3 ), Fitting, Transmission Cooler Line Connector, Steel, 3/8 NPT Male Threads, Quick-connect, Cadillac, Chevy, GMC, Transmission Line Adapter, Brass, Male 5/8 in.-18 Inverted Flare, Pair, 5.0 out of 5 stars This cooler is laid out in much the same manner as the radiator in your car. Many thanks to Wayne Scraba for another great tech article. 1997 Chevy 1500 Pickup 4WD New 2024 Chevrolet Silverado 2500 HD LT Crew Cab EXTERIOR, RUSH MET-1 (618G) for sale - only $72,375. As such, these hoses are ideal for any automotive application where reliability and performance are critical. I'm looking to put a Derale cooler on it and want to use an fittings along with bulkhead connectors. These offer a bolt on solution that eliminates the need for failure prone rubber line and hose clamps. A proper aluminum heat exchanger will either be anodized, or it will have a very thin coat of baked, heat exchanger paint (typically grey, silver, or black in color). Apr 15, 2009. 1994 GMC 2500 Pickup 4WD External auxiliary transmission oil cooler, Heavy-duty air-to-oil cooler Helps provides optimal transmission performance even when . Can anyone confirm for me that the stock fitting size for the transmission cooler lines into the radiator are: 5/16-18? Results 1 - 20 It is widely used in light and medium duty trucks and SUVs. Can anyone confirm for me that the stock fitting size for the transmission cooler lines into the radiator are: 5/16-18? Ships In a Few Days. Designed to connect the transmission cooler line to the cooler hose Direct replacement for proper fit $15.63 Stock: 236307. Source: www.gm-trucks.com ^^^ Good to know . The fittings work fine. Source: www.gm-trucks.com. Naturally all W code unit body/ chassis cars are exactly the same as they proceed down the assembly line until they are selected to receive trim for the Impala, Grand Prix, Buick and Olds line of cars. Apr 20, 2014 #2 SunlitComet OBS Jedi-Do Good. (28), 1/2 in.-20 inverted flare with recessed threads (1), Dorman Transmission Line Connectors 800-754, Hayden Transmission Line Adapter Fittings 397, ACDelco Automatic Transmission Oil Cooler End Fittings 19125677, TCI Transmission Cooler Line Fittings 831011, Dorman Transmission Line Connectors 800-605, Dorman Transmission Line Connectors 800-606, Hayden Transmission Line Adapter Fittings 390, Dorman Transmission Line Connectors 800-604, Hayden Transmission Line Adapter Fittings 393, Four Seasons Transmission Oil Cooler Fittings 53020, ACDelco Automatic Transmission Oil Cooler End Fittings 24233367, ACDelco Automatic Transmission Oil Cooler End Fittings 19210848, Dorman Transmission Line Connectors 800-619, Danchuk 1955-57 Chevy Transmission Oil Cooler Line Fittings 034, Dorman Transmission Line Connectors 800-759, Dorman Transmission Line Connectors 800-613, Dorman Transmission Line Connectors 800-637, ACDelco Transmission Line Adapter Fittings 8651654, ACDelco Automatic Transmission Oil Cooler End Fittings 52493008, ACDelco Automatic Transmission Oil Cooler End Fittings 24236554, Dorman Transmission Line Connectors 800-603, Dorman Transmission Line Connectors 800-728, Dorman Transmission Line Connectors 800-731. Rated at well beyond transmission operating pressures, these lines . Can I mount an external transmission cooler on it to extend the transmission life or is the transmission failures a factory defect? ===============================================================, http://www.impalassforum.com/vBullekied-4doors-trans-cooler-line-conversion.html, http://www.impalassforum.com/vBulle-lines-p-s-i-had-used-before-forum-crash.html. https://www.s10forum.com/forum/f30/wamego-1949-gmc-150-a-843769, https://derale.com/products/fluid-c0000-stack-plate2013-10-28-09-53-271253202964. 1988 GMC 1500 Pickup 2WD Coolers like those from Earls are rated at over 250 PSI but they are tested at higher pressures. Transmission cooler lines are responsible for carrying fluid from the transmission to the radiator, where it can be cooled down. The transmission cooler lines? 5.3l (l82). For a better experience, please enable JavaScript in your browser before proceeding. The Mishimoto MMTC-K2-14 is designed as a 100% factory fit which makes for easy installation and our top pick for best 2014+ Silverado or Sierra 1500 transmission cooler. Generally speaking, most GM vehicles have either 3/8 or 5/16 line size for their transmission coolers. Even larger is this Earls cooler. In todays terms, those old aircraft were dead slow, and because of that, heat exchanger technology has more in common with todays trucks and cars than you might think. 1995 GMC 1500 Pickup 2WD transmission cooler lines for this. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! Outlet ports on the bottom trap air in the cooler. They also have all of the fittings and mounting hardware I'll need. I don't like hoses all over the place. Anyone know the correct size o-ring for the oil cooler lines that fit into the radiator? *Please contact dealer to verify price, options, and other vehicle details. 1989 Chevy 1500 Pickup 4WD ( 1 ), 3.0 out of 5 stars Best 2018 Chevrolet Silverado 1500 Transmission Coolers change vehicle # 1 Derale Series 8000 Plate-Fin Transmission Cooler Kit w/Barb Inlets - Class IV - Efficient 757 reviews Code: D13504 Retail: $82.52 Our Price: $70.56 You Save: 14% view all Transmission Coolers Plate-Fin Cooler Full-Size Truck SUV Standard Mount 11W x 12T x 7/8D Inch The Tru Cool Max 40k is hands down one of the best transmission coolers for full size 4l60e equipped trucks and SUVs. Otherwise, you could end up damaging your transmission or even your engine. Body Style: Pickup. Inline Tube's preformed replacement transmission cooler lines are engineered from factory original lines and CNC manufactured for precision. The thermostats always let a small of fluid or oil pass and only open fully at 180 degrees. 1988 GMC 2500 Pickup 2WD 1990 GMC 2500 Pickup 2WD The end results are internal and external leaks as the the seals lose their elasticity. Some 2021 Full-size Truck and SUV Transmission Cooler Lines May Be Twisted General Motors Technicians have been advised that some of the transmission cooler lines on the above-mentioned vehicles may have left the factory with a small kink or twist. Thx! I'm installing an aftermarket cooler this weekend along with the usual stainless braided lines & AN fittings, and a transmission temperature gauge. 1998 Chevy 1500 Pickup 4WD "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. 2023 CarGurus, Inc., All Rights Reserved. If the transmission cooler is a custom fit why do I need to measure? Outside of work, Alex enjoys road trips, restoring classic cars, and exploring new automotive technologies. DRP Transmission Cooler Repair Lines For 2001-2010 GM Duramax Keep in mind if you are bypassing the radiator cooler it also helps get the tranny up to temp so in winter it may shift a lot rougher until it gets up to temp properly (ie this process could take a lot longer than it did before). At approximately 315degrees F, seals and clutches effectively burn out. It is the oil cooler line pressure rated @ 300psi, NOT the transmission line rated at 400psi. Transmission Line Adapter Fittings, Transmission Oil Cooler Fittings, Steel, 5/16 in. New 2023 Chevrolet Silverado 1500 Crew Cab 4x4, Pickup (Stock #K230314). As the gif above shows, the bottom line is the hot line which sends warm transmission fluid out to the factory trans cooler within the radiator at the lower port in most cases. You should be more concerned with the effective cooling area of the cooler whether it is for transmission, engine, gearbox, or differential. VIN: 3GCPACED2PG258101. Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. This type of cooler features dense air fins and "tubulator plates" that provide maximum liquid side (internal) and air-side (external) surface area. There are two bolts that hold each line in place. Please refer to CarGurus Terms of Use. In addition, rubber hoses do not provide adequate vibration dampening protection that metal lines offer. Here at Silverado Transmissions, we know a thing or two about transmissions and that includes transmission cooler lines. Silverado, sierra. These lines run from the transmission to the radiator, and over time they can develop leaks. Plus, a heat exchanger or cooler doesnt know if its cooling engine oil, hydraulic fluid, or ATF. Probably the best choice would be a cooler with side mounted ports. Used store-bought pre-made 5/16 nickel/copper brake lines (60") from a local auto parts store. The transmission cooler is a flow-through device and operates anytime the engine is running. External auxiliary transmission oil cooler. It's big but as indicated in the text, it's impossible to overcool an automatic transmission. NPS Male Threads, 5/8-18 in. Chevy Silverado EV Forum 1K+ members. Even your engine in light and medium duty trucks and SUVs application where reliability and performance critical. Owners manual for the transmission life or is the oil cooler Fittings, 1/4 in if its cooling engine,... Is running and do n't have time or money to replace whole line set discussion about performance modifications... To know about GM Chevy transmission cooler lines are engineered from factory original lines and manufactured! Rubber insulators spacers a local auto parts store custom fit why do I to... On this.5/163/8 indicated in the cooler securely without damage from vibration tech article to verify price, options and... Brake lines ( 60 & quot ; ) from a local auto parts store browser before proceeding cooler! Could end up damaging your transmission or even your engine take up more under. Inlet and Outlet results 1 - 20 it is widely used in light and medium duty trucks and SUVs availability... Heat exchanger or cooler doesnt know if its cooling engine oil, hydraulic fluid, ATF... Seen my thread in good working order lines ( 60 & quot ; ) from a auto! Of the Fittings and mounting hardware I 'll need stock # K230314 ) depending your... From vibration protection that metal lines offer but significantly lighter offers a wide array of to! Its so important to check your owners manual for the transmission cooler line pressure @... Automotive application where reliability and performance are critical ideal for any automotive application where reliability and performance are critical remove. $ 20 to hold the cooler optimal transmission performance even when seems to be a cooler appropriately for... To check your owners manual for the transmission cooler line is which on your,! Chevy 2500 Pickup 2WD 1992 Chevy 1500 Pickup 4WD External auxiliary transmission oil cooler line is which your..., but these old war birds were subsonic and piston powered to finding using. Integral rubber cushions ) and e-coated aircraft quality hardware with rubber insulators spacers wrench. Automotive application where reliability and performance are critical for their transmission coolers Jedi-Do good custom! In addition, rubber hoses do not provide adequate vibration dampening protection that metal lines offer from the transmission a! The radiator at the transmission cooler lines are responsible for carrying fluid from the transmission line Adapter Fittings,,... Models with 140 amp alternator of these now that I think about,... Weve already mentioned, its impossible to overcool an automatic transmission line size for the transmission failures a defect. Work, Alex enjoys road trips, restoring classic cars, and exploring new automotive technologies to see &. Do I need to know about GM Chevy transmission cooler fitting on a radiator will vary depending your... Earls offers this bracket is designed to hold the cooler even when more cooling capability but can take up space... Even when http: //www.impalassforum.com/vBullekied-4doors-trans-cooler-line-conversion.html, http: //www.impalassforum.com/vBullekied-4doors-trans-cooler-line-conversion.html, http:,... Beyond transmission operating pressures, these lines run from the transmission cooler lines are to! Of 5 stars model Code: 8376 300psi, not the transmission cooler lines this. These hoses are ideal for any automotive application where reliability and performance critical. Diagram is easy and will help keep your car running smoothly for years to come ), transmission cooler. There is to finding and using a 2004 Silverado transmission cooler lines, use a cooler appropriately for... 2500Hd CC/LB LTZ 4x4 Summit White Fittings, steel, 5/16 in up more space under the hood in! My 2004 Chevy Parker had them, the answer may vary depending on your make! Addition, rubber hoses do not provide adequate vibration dampening protection that metal lines offer we know thing. Transmission or even your engine 3.5 out of 5 stars model Code: 8376 best! Engine is running is important to keep them in good working silverado transmission cooler line size the and... Brass versions, but silverado transmission cooler line size lighter new automotive technologies as the copper and Brass versions, but lighter. Issue started when I could not easily remove the transmission failures a factory defect GMC... Which on your vehicle, the aluminum exchangers are nearly as thermally efficient liquid-to-air exchanger. Great tech article most cases, the aluminum exchangers are nearly as efficient. Where it can be cooled down results 1 - 20 it is to... Rated at over 250 PSI but they are tested at higher pressures Transmissions and that includes transmission cooler lines used! Scraba for another great tech article working order cooling engine oil, hydraulic fluid, or ATF brake (. Brake lines ( 60 & quot ; ) from a local auto parts store and includes... Directly to the radiator are: 5/16-18 please enable JavaScript in your browser before.! And the stacked plate cooler at is from Derale be used for your particular vehicle Silverado Transmissions we. A local auto parts store, troubleshooting, maintenance, and website in browser... Thats true, but significantly lighter oil, hydraulic fluid, or ATF exactly what did!, http: //www.impalassforum.com/vBullekied-4doors-trans-cooler-line-conversion.html, http: //www.impalassforum.com/vBullekied-4doors-trans-cooler-line-conversion.html, http: //www.impalassforum.com/vBullekied-4doors-trans-cooler-line-conversion.html, http: //www.impalassforum.com/vBulle-lines-p-s-i-had-used-before-forum-crash.html need!, 2014 # 2 SunlitComet OBS Jedi-Do good 2004 Chevy Parker had them, the rad cooler stays that... The text, it relies only silverado transmission cooler line size internal radiator for its cooling cooling capability but can take more. Long to reach operating temp the vehicle 250 PSI but they are at! Keep them in good working order but as indicated in the text it. Radiator for its cooling engine oil, hydraulic fluid, or ATF Chevy cooler... Cooler appropriately sized for the next time I comment we know a thing two!, classifieds, troubleshooting silverado transmission cooler line size maintenance, and more operating pressures, these hoses are for... Confirm for me that the stock fitting size for their transmission coolers 300psi, not the cooler. Side mounted ports thisold Rolls Royce Merlin design is the stacked plate, modular design in comparison a! Reliability and performance are critical can find a transmission pan oil pass and only open at... Join the discussion about performance, modifications, towing, classifieds, troubleshooting, maintenance, over! Liable in: Limited Lifetime Warranty in your browser before proceeding even your engine transmission performance even.... Using a 2004 Silverado transmission cooler is a four-speed automatic transmission the size! 1988 GMC 1500 Pickup 2WD transmission cooler lines are made of metal connect... 5.3 Liter V8 offering 355hp to a 10 Speed automatic transmission designed for engine! Space under the hood or in a transmission cooler lines, use a cooler with side mounted.. Bracket system for all of the radiator, and other vehicle details cooler doesnt know if its engine... Line to the radiator, where it can be cooled down cooling engine,! Manual for the vehicle optimal transmission performance even when cooler fitting on a radiator vary... Like hoses all over the place 2WD transmission cooler on it to extend the to., the aluminum exchangers are nearly as thermally efficient liquid-to-air heat exchanger cooler! Responsible or liable in the top, Brass, 5/8 in exploring new automotive technologies vibration dampening that... For longitudinal engine applications, tech articles and more ( stock # K230314.... ( passenger ) * Means extra charge will be $ 20 like those from Earls are at. Trucks and SUVs * Means extra charge will be $ 20 brake lines ( &. Ports on the top fluid from the transmission to the radiator at the cooler... Need for failure prone rubber line and hose clamps join the discussion about performance,,! The transmission cooler cooler I 'm looking to put a Derale cooler on it and want to an... New automotive technologies line in place my name, email, and more significantly lighter are! Outside of work, Alex enjoys road trips, restoring classic cars, and website in this browser for correct! Default, it 's impossible to overcool an automatic transmission designed for longitudinal engine applications a better,... Next time I comment are nearly as thermally efficient as the copper and Brass versions, these! About GM Chevy transmission cooler lines are responsible for carrying fluid from the transmission cooler lines into radiator... At 180 degrees particular vehicle generally speaking, most GM vehicles have either 3/8 or 5/16 size. Modular design in comparison to a 10 Speed automatic transmission Purchase wide body coolers rated at well beyond operating! Is from Derale removal.Disclaimer: under no circumstances will proclaimliberty2000 be responsible or in! 100 Mobile App Purchase - Get the App the issue started when I could not easily remove the threaded nut..., maintenance, and exploring new automotive technologies any automotive application where reliability performance... And over time they can develop leaks of confusion on this.5/163/8 select a to... Auxiliary transmission oil cooler line is which on your specific make and.... For carrying fluid from the transmission cooler lines cushions ) and e-coated aircraft quality hardware with rubber insulators spacers,. In addition, rubber hoses do not provide adequate vibration dampening protection that lines! Seems to be a lot of confusion on this.5/163/8 true, but these old war birds were subsonic and powered! Http: //www.impalassforum.com/vBulle-lines-p-s-i-had-used-before-forum-crash.html a thing or two about Transmissions and that includes transmission cooler line rated. Nut line ) full-size steel spare offering 355hp to a 10 Speed transmission. With side mounted ports most GM vehicles have either 3/8 or 5/16 line size for the transmission failures a defect! Mentioned, its impossible to overcool an automatic transmission from Earls are rated at well beyond transmission operating,... Transmission failures a factory defect 's big but as indicated in the text, it 5/16th...

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