User56898

I have a TH350. I put a B&M trans cooler in it. I have the lines running to that alone and not in series with the stock radiator cooler. Is this right?

some say i should use both, others say i shouldn't....

thx

IHI

Do not run them in series, hopefully you bought a cooler larger than you need for optimzation so you can run it stand alone. Over the years I've always bought the largest cooler I could.

The factory runs tranney lines through radiator to speed up the heating process so transmission works more effeicently faster and it makes for tight packaging also. But it also tends to heat sink itself also so either tranney will end up running warmer than it should be or vise versa with engine running a little warmer than it should be due to heat disapation. Transmissions need to run at around 150-160* for longevity and proper operation since that is where the fluid is viscoses enough to be effeicently, anything over 180* and you starting to varnish internally and get bands and clutches hot which will shorten tranny life in the big picture.

I never installed any tranny guages until I installed this latest drivetrain set up but no matter if I'm racing or driving/cruising temp stays at 120* and I have to fight it to get upto 150* in the staging lanes. During the summer and hot months/stop light traffic it typically gets upto 150* and no warmer unless I do alot of hot rodding to make convertor slip and build up heat. I've never installed on a factory car, but I do know the newer HD pick up's tend to run between 120-150* for reference, but they also run a a good size tranney cooler as well AFTER the radiator.

User56898

thx you