I changed from a manual 3-speed to a modified C4 automatic. I installed an aluminum radiator, and a separate transmission cooler. I used a Derale # 13225 cooler, because it fits in the cavity of the radiator opening. I installed at the vertical centerline (up-down) of the grill opening. This allows for maximum air travel across the cooling fins, both by airflow from forward motion of the car, and from the fan draw. The Derale transmission cooler has two “L” bracket mountings. They are at the correct location, but were too tall - to be able to mount the cooler right behind the hood latch assembly. I removed the bent part plus enough to clear the hood latch assembly, and then made new L-brackets from some aluminum stock. I drilled and screwed the new aluminum L-brackets to the ends of the cooler, and then screwed the assembly to the radiator support. One screw on the driver’s side, and two on the passenger side. Carefully placing and removing broken pencils in the inlet/outlet tubes, I marked “centerlines” for the 90 degree AN-6 fittings. I removed the cooler and drilled holes, installed rubber grommets, installed the AN-6 fittings, and installed the cooler assembly. Because heat “rises”, I connected the transmission line output to the top, and the return to the bottom. (May or may not make a difference).\ Parts: Derale #13225: 1.75” H x 24.75” W x 2.5” Thickness AN-6 fittings: 90 degree to 3/8” (Jegs or Summit Racing) Braided Stainless Steel Hose: Sum 230606 (Summit Racing) Rubber grommets (1”) (Ace Hardware)
Sounds good and I like the carb hats snorkel style. Would be sweet to run an external air filter in a cold air location somewhere out fron of the rad. And not to be too critical here but one thing caught my eye and figured I'd quickly comment on it. The output line for the cooler generally goes into the bottom of the rad so that it is forced to pressurize and fill the internal reservoir from the bottom up. If also using an external cooler as well, or in lieu of as you are implementing here, it should typically be looped into the system after the rad and also filled from the bottom up as well. Heat rising has more to do with gaseous mass, not liquids contained within a sealed non-aerated vessel. So, output goes to bottom feed of rad, outputs from the top of rad to the bottom of the external cooler, and returns to the trans from the top of the external cooler.
I understand your concerns. I manually pumped fluid through the system. I purposely did not run the fluid through the radiator transmission cooler. And, if you notice - the transmission cooler uses "air' to dissipate heat - and, I even included a disclaimer about whether or not it would make a difference. I am part of the engineering team for an environmental test lab. And, for the snorkel system: I installed a 1970 Tornino Cobra Jet hood scoop on the hood in a strategic location, used Spectre parts for coupling/piping and an in-line air filter. I expect 0.5 psi at 54 mph in the air intake.
