70c10

iTrader: (1)

Hey guys I purchased a b&m trans cooler part #70273 and now I'm worried it's not big enough to keep the trans cool. The trans is a 4l60e and is going into a 70c10 turbo ls1 truck. I tried to get a bigger cooler but with the intercooler, condenser and radiator there is not enough room for it. I'm not running the trans lines through the radiator as there are no provisions for it. Do you think the smaller cooler will be enough? Please tell me your thoughts.

1964SS

iTrader: (1)

That cooler looks identical to the coolers that were included in the 88-98 trucks with the towing packages, but those systems routed through the radiator and then the small cooler. I think that cooler is a bit small to be used by itself.

Sebtarta

iTrader: (1)

I called B&M about a month ago asking what cooler I could use for the 4L65e. I mentioned it was street driving with the occasional spirited drive and was recommended the #70266 bypassing the radiator.

sweetk30

don't forget tranny fluid needs to be up to temp and not to hot .

so bypassing the rad cooler to heat it up can possibly cause problems if in colder climates .

and b&m makes a few coolers with 12volt fan built in to work for jobs like this . cant get the air flow you need then mount this style and wire it up . already has temp sender in it just needs 12volts .