When mounting your cooler, keep in mind that heat exchanger (like engine radiators) do not work well if the liquid side is filled with air. Just saw your post, probably too late. 1/4" pipe straight, not NPT. Outlet ports on the bottom trap air in the cooler. This type of cooler features dense air fins and "tubulator plates" that provide maximum liquid side (internal) and air-side (external) surface area. Transmission Cooler Keeping the fluids fresh and cool is the best way to extend the life of your transmission. Learn how your comment data is processed. Both the top and bottom mount brackets include this cushion arrangement. That way you can tell if the cooler is too big or little. The ideal operating temperature for automatic transmission fluid is somewhere between 175 and 225 degrees F. Here’s what can happen above this range: The built-in coolers that reside in the bottom of the radiator are marginal at best. The Earl’s coolers incorporate -10 AN O-ring boss ports. JavaScript is disabled. This is also true for trucks that haul heavy loads or tow trailers battling tough conditions such as long grades, high altitudes, or desert heat. So that means the GM heavy duty trans cooler commonly found on the Impala police package will bolt right into any W code family of cars. It’s no secret that heat kills automatic transmissions. At approximately 260 degrees F, internal transmission seals, which are often manufactured from a polyacrylate material, begin to harden. Lol. Order Ford Ranger Transmission Cooler Line Assembly online today. And at the same time, it too can influence the engine coolant temperature. Step 5: Locate the two ATF cooler lines on the passenger side of the transmission. This site uses Akismet to reduce spam. The modular configuration cooler will also have less than half of the pressure drop found in a tube-and-fin cooler. I was under the impression “in-the-rad” cooler was not to cool but to get the trans up to 700R4 transmission cooler lines manufactured in steel exactly like the original transmission lines. The best method is to have the ports on the top. When it comes to heat exchanger construction, what’s best: copper and brass or aluminum? ADD TO CART. Home > Tech Info > Trans Cooler Return Line Chart. I’ve been researching this. You can add an external cooler. Chevrolet Truck Parts - Cooler Lines. These Advance Adapters flexible transmission cooler lines can make that easier. Are your transmission cooler lines leaking? Plus, a heat exchanger or cooler doesn’t know if it’s cooling engine oil, hydraulic fluid, or ATF. so unless your standing there looking at the radiator in question its almost imposibble to know the right answer. “Coolers should never be mounted so that both the inlet and outlet ports are on the bottom. Free Same Day Store Pickup. Save my name, email, and website in this browser for the next time I comment. The thermostats always let a small of fluid or oil pass and only open fully at 180 degrees. Get enough rubber hose to go from the cooler connections all the way to ends of the short rubber hose that connects the steel line from the transmission to the steel line from the radiator. The common black paint that is preferred by most local radiator shops can act as thermal barrier instead of promoting the transfer of heat. hose shop closes in 1 hour and 30 minutes. And the beat goes on….. “A typical “in-the-rad” cooler will reduce the heat…” 15% off orders over $100* + Free Ground Shipping** Online Ship-To-Home Items Only. This is how the mounting arrangement looks assembled on the cooler. Please be sure to verify the type of transmission in your project before ordering. 1/2-20 bolt thread. I'm sure there must be an aftermarket thermostat that can spliced into the cooler lines. A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. Is it a 5/16 inverted flare? If the vehicle in question has a thermostat that opens at 195 degrees F, once warmed to operating temperature, the transmission cooler will have a tough time reducing the heat of the ATF below 195 degrees F. At the same time, if the transmission is overworked, it might raise the operating temperature of the ATF to 250 degrees F or more. One of my daily drivers is a 2002 Grand Prix GTP Sedan with the supercharged 3.8 liter V-6 and 4-speed automatic transaxle. When it had about 2000 miles on the odometer, I began all of the typical performance modifications including a smaller blower drive pulley for increased boost. Also Perry Hayden technically first to slap a cooler on an auto transmisson in the 60’s… just giving credit where credit is due. there are different sizes. Size: It’s easy to assume that a bigger transmission cooler will do the trick, but this isn’t always the case. 2 piece set. Still turning high 12 second quarter mile times. This type of cooler configuration is much more efficient than the tube-and-fin style. Naturally, this might not apply to vehicles operating near the Arctic Circle, but in the rest of the world, it basically holds true. much larger and factory mounting, i have a 2018 ford F450 king ranch and wanted to upgrade my transmission oil cooler what size should i buy and brand, Your email address will not be published. The collector or end tanks ensure minimum flow restriction, while the fully brazed construction results in the most efficient possible thermal transfer bath between liquid and air. It is not enough to lead air to the cooler; the heated air must have somewhere to go after it passes through the core. Dropping the fluid temp too low can reduce the fluid’s ability to fully protect components. This cooler is laid out in much the same manner as the radiator in your car. and most say it doesn’t matter. Along with the narrow coolers, you can purchase wide body coolers. When transmission fluid gets too hot, it breaks down, decreasing the life of the fluid as well as the seals, bearings and moving parts. Although there are a number of ways to mount the cooler, one of the best that we've seen is the cushioned aluminum mount arrangement used by Earl's (Earl’s #1302ERL for the narrow coolers shown in the article). Aftermarket trans coolers come in a variety of shapes and sizes to accommodate your particular application and are generally rated by gross vehicle weight (GVW), typically ranging from a … Probably the best choice would be a cooler with side mounted ports. I would like to add something from my own experience with auxiliary transmission coolers. Included is a pair of brackets (with integral rubber cushions) and e-coated aircraft quality hardware with rubber insulators spacers. From here, you simply use an AN adapter to go to your cooler hose size (which is typically -6AN – Earl’s #585106ERL shown here). There are a number of ways to mount the cooler; however, Earl’s offers a slick system for their coolers. set Proudly Made In The USA! (only thing i can remeber, can be terrible wrong), please. If you have upgraded to a 700R4 transmission this set will fit perfectly. 3/8"ID works very well, although I think the exact size is a smidgen smaller at 11/32". Many thanks to Wayne Scraba for another great tech article. And if you search the Summit Racing website, you’ll see all sorts of good options, including top-of-the line versions from Earl’s Performance. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. 1,990 Posts . Part # 800-5603. Item #: OCL007 I became concerned about the elevated transmission temperatures so an online search provided just what I needed. 78 Malibu, 402 getting eddy heads and new cam, 5200 stall, th350, holley sniper EFI, 9" 3:70. In a conversation with Bob Fouts at Earl’s Performance, we garnered this critical kernel of information: It is virtually impossible to overcool an automatic transmission, especially one in a high performance application. During the early 1930s, it was first developed for use with the Rolls Royce Merlin engine that powered the Spitfires and Hurricanes in the Battle of Britain. These cushions protect the heat exchanger from unwanted vibrations. New 1978-79 Ford Bronco 1977-79 Ford F150, F250, F350 2 Pc. But before you rush out and buy the first cooler available, here’s an example to ponder: Decades ago, we built 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. Generally speaking, this cooler configuration consists of fins that are placed over aluminum tubes, which are laid out in “S” patterns. These lines are cut and 3/8- to ½-inch adaptor fittings are installed to mate with the new cooler input fitting size. For a better experience, please enable JavaScript in your browser before proceeding. This is almost identical to the process Detroit uses to build modern radiators. 26 X 8.50-15 M/T slicks, I tried with a 1/4 npt but its smaller. While too much cooling is less of a problem than too little it needs to be pointed out that virtually all new cars and trucks need to operate at a specific temp. NPS, 1/2-20 in. https://transmissioncoolerguide.com/transmission-cooler-lines It measures 8-1/4 X 18.5-inches in size (Earl’s #26000ERL). For high performance street cars or trucks that are subjected to heavy loads or towing, bigger is always better. All the later vehicles do have thermostats for the transmission, either in the transmission or in the lines to the cooler. Even the hardware included with the cooler package fits the pre-drilled holes found in the chassis. The stacked plate, or “modular” cooler, has been in use since prior to WWII. Plus, its robust construction readily defends against possible damage from road debris and corrosion. Advance Auto Parts has 17 different Transmission Oil Cooler Line for your vehicle, ready for shipping or in-store pick up. The adaper fitting on the transmission end are straight thread for most GM transmissions, not tapered. For a TH350, the lower connection feeds the cooler, Upper line connection is the return. It was ideal because of its dense air fins and “turbulator plates” which provide maximum liquid side (internal) and airside (external) surface area. It’s best to use a cooler appropriately sized for the vehicle. Find Advance Adapters 23-1501 Advance Adapters Flexible Transmission Cooler Lines and get Free Shipping on Orders Over $99 at Summit Racing! some are a 3/8 line some are 5/16 line. I didn’t understand why GM would offer a exact fit cooler for the less popular Grand Prix until I did a little product research. The narrow 8¼-inch wide coolers are available in heights ranging from 2 to 18½ inches. Check out free battery charging and engine diagnostic testing while you are in store. Copper Bass? This is a discussion on Transmission cooler line size within the Automatic Transmission forums, part of the Drivetrain category; I have a 99 Camaro SS with a 4L60E transmission. This is especially true in big-power, street-strip machines that combine lots of horsepower with a small torque converter and steep rear axle ratio. 99. Coolers should never be mounted so that both the inlet and outlet ports are on the bottom. ), but none with a clear (to me, anyway) answer to this question: what size are the NPT threads for the transmission lines to the radiator, and what is the inner diameter of the flexible hose portion of the line? If this isn’t possible, the next best scenario has the cooler mounted on the side so that the ports are arranged horizontally. In fact, Earl’s offers a wide array of coolers to suit almost any application. 99. Manufactured from aluminum, this bracket is designed to hold the cooler securely without damage from vibration. A -6 AN arrangement is most common for an automatic transmission. Jon N. ~ What doesn't kill you makes you stronger. Transmission cooler line size. Trans Cooler Return Line Chart … A conventional tube-and-fin cooler is the most common type you’ll find. Even larger is this Earl’s cooler. The power gains were substantial along with the expected increase in engine operating temperatures. Earl’s coolers are manufactured with -10 AN female O-ring ports. As topic says. Another thing to consider is the paint. GM Transmission Cooler Fittings Powerglide - OEM Fitting Location Thread Size Flow Direction Upper ⅛" Pipe Return/in Lower ⅛" Pipe Cooler feed/out Powerglide - Dedenbear This effect draws heat from the ATF. 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. From here, you simply select the AN adapter that suits your needs. When this basic, modular design is utilized, and the oil flow and air speed of the vehicle is taken into consideration, then the optimum heat exchanger can be produced. In most cases, the aluminum exchangers are nearly as thermally efficient as the copper and brass versions, but significantly lighter. some are a 3/8 line some are 5/16 line. A typical “in-the-rad” cooler will reduce the heat of the ATF but it’s also influenced by the engine coolant temperature. As we’ve already mentioned, it’s impossible to overcool an automatic transmission. The collector or end tanks ensure minimum flow restriction, while the fully brazed construction results in the most efficient possible thermal transfer between liquid and air. Engine rpm is up across the board, and the automatic transmission builds heat. It's big but as indicated in the text, it's impossible to overcool an automatic transmission. operating temperature quicker. For V8 motors only. Use Code: SAVENOW. It’s a complete transmission cooler kit built to General Motors specifications right down to GM part number. The end results are internal and external leaks as the the seals lose their elasticity. Free In-Store or Curbside Pick Up. This cooler is designed with 13 plates for cooling and its dimensions are 8.5 x 22 x 1.25 making it one of the largest transmission coolers on the market. That way, it will always be subject to high pressure at the face, and the engine fan will always provide a region of low pressure behind the cooler. The “extra wide” coolers from Earl’s have a width of 15¼ inches and heights range from 2 to 18½-inches. Required fields are marked *. Carbon forms in the oil and for all intents and purposes, the transmission is now junk. On the downside, the aluminum coolers are more difficult to manufacture, so they’re typically more costly. Dorman Automatic Transmission Oil Cooler Line Fitting 800-5603 $ 17. Classic Industries offers Chevrolet Truck Cooler Lines. The first photo shows the lines coming through the torsion bar anchor transitioning to aluminum fastened to the sub frame connector. The idea is to have air flow over the fins, which in turn creates a heat sink effect. What size are the stock fittings for the transmission cooler lines on a GM TH350? Delivery: Jan 13-14. Rather than using a tube to carry the ATF inside the cooler, the fins actually form the passage for the fluid to pass through. Order Transmission Coolers & Accessories for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. Here's the list of GM trannys and their in/out line sizes and flow direction. Dorman's leak-resistant design prevents the common, high-stakes problem of transmission fluid loss. This video is here to help you perform a quick, easy, and dirty repair to STOP them from leaking.Enjoy! Newer model vehicles also will set a DTC for taking too long to reach operating temp. Transmission cooler lines are sold in pairs. Not only will your transmission live longer, it will also be more efficient. Often, a transmission will die within a few thousand miles (or sooner) if subjected to 300-plus degree heat. At approximately 295 degrees F, transmission clutch plates begin to slip because the oil is breaking down further. Do you need to keep your transmission cool? This heat can be transferred to the engine coolant resulting in a potential boil over. The best method is to have the ports on the top. You also need to consider the location of the inlet and outlet ports. This old Rolls Royce Merlin design is the most thermally efficient liquid-to-air heat exchanger format available. 6 The transmission lines on the 7.3L trucks have crimped hard lines on each end, and a 3/8-inch flex section in the middle. so unless your standing there looking at the radiator in question its almost imposibble to know the right answer. Typically, a modular cooler (such as the Earl’s 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. Run out of the external transmission cooler's "output" line and connect to the return coolant line back to the transmission. Tube-and-fin coolers are inexpensive and easy-to-build. If this isn't possible, the next best scenario has the cooler mounted on the side so that the ports are arranged horizontally. It’s a perfect fit with GM specific quality. Finally, Earl’s manufactures curved coolers that have a width of 11.562-inches and a height from 3.05 inches up to 4.919 inches. Typically, there are two types of cooler styles available: “tube-and-fin” and the “stacked plate” cooler. You will see two lines close together running towards the front of the truck. A transmission cooler is not a substitute for transmission repair. Est. What is the correct size cooler for my application? In the end, money that’s spent on a proper cooler is like money in the bank. A vehicle used for towing may sometimes benefit from an additional transmission cooler. They are 5/16" inverted flare nuts on the tubing. It’s no secret AN fittings are less prone to leakage and obviously much more secure than pipe thread examples. Earl's offers coolers in a wide range of configurations. most of the adapters took a 5/15 line, forget what the thread size is for the most part the adapters that screw into the case are 1/4-18 STRAIGHT thread, although some … im in a hurry. Classic Industries offers a wide selection of Automatic Transmission & Components for your Chevrolet Truck. http://www.andersonfittings.com/flare-fittings.html, https://macc.chevelles.net/images/deans_chevelle.jpg, VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. I'm replacing the lines on the TH350 I picked up and would like to make sure I get the right size … Up close, you can see the "modular" construction format. Discussion Starter • #1 • Aug 1, 2008. I run both trans and engine coolers and both are thermostatically controlled. The best part is, our Ford F-150 Transmission Oil Cooler Line products start from as little as $7.99. Earl’s offers this bracket system for all of their Temp-A-Cure cooler models. Now, you’re probably saying: “there’s a big difference between the conditions seen in an aircraft and those experienced by my street driven car.” That’s true, but these old war birds were subsonic and piston powered. Great Tech article Male Threads, 1/4 in Scraba for another great Tech article,... Exchangers are nearly as thermally efficient liquid-to-air heat exchanger construction, what s! Check out free battery charging and engine diagnostic testing while you are in.! Loads coupled with stop-and-go traffic increase the heat level in an automatic transmission oil cooler behind radiator. 624-253 transmission oil cooler end fittings Transmisson Line Adapter Fitting, Male Threads, in. On a GM TH350 tube-and-fin arrangement face height up to 18½ inches operating temp what size transmission cooler lines here... 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Prix GTP Sedan with the new cooler input Fitting size in most cases, the aluminum are. 15¼ inches and heights range from 2 to 18½ inches can be terrible wrong ) please... Aluminum, this bracket is designed to hold the cooler, has in... 240 degrees F, important additives begin to cook in the bank side mounted ports daily is... 3/8-Inch flex section in the text, it too can influence the coolant! Of configurations pre-drilled holes found in the middle what is the formation of varnish inside the transmission, and!! Seals and clutches effectively burn out comparison to a 700r4 transmission this set will fit perfectly against damage... Combine lots of horsepower with a face height up to 18½ inches can be transferred to the.! Cooler fan switch inline running towards the front of the transmission cooler Keeping the fresh... Gains were substantial along with the cooler fan switch inline the transmission end are straight thread for most transmissions! Die within a few thousand miles ( or sooner ) if subjected to 300-plus degree heat type of in... Thing i can remeber, can be terrible wrong ), please contact us to with. Installed here ) with the new cooler input Fitting size as well for an transmission. Video is here to help you perform a quick, easy, and radiator combinations hold the lines... And the automatic transmission oil cooler Line Assembly online today for their what size transmission cooler lines and! Aluminum tubing for my rear mounted oil cooler Line, modular design in comparison a... Across the board, and radiator combinations over $ 100 * + free Ground Shipping *. The best choice would be a cooler with a face height up to 18½.! Chevrolet Chevelle owners and enthusiasts trans in perfect operating condition //transmissioncoolerguide.com/transmission-cooler-lines Home > Tech >.