Arrambide

Since I broke 4 trannys, I installed a B&M Supercooler 70268 in the box said 13,000 BTU, here in forum, I see the 24K GVM, but in the B&M models, didnt see that number, then I see that is a different concept.

I have right now, that cooler and a deep oil pan with ventilation, I dont want to broke again the tranny so I was thinkin in install a 2nd cooler but I dont know if there´s better to install only one but bigger or install a 2nd.

blown 346

iTrader: (25)

Usually the trans coolers go by vehicle weight as to determine what they can handle and application.
I would get a larger cooler and go with one instead of running two. What are your trans temps?

Arrambide

Good question!!

I really dont know because dont have how check it, I remember that the friend who sold me the tranny, told me that never is higher than 160 with supercooler by 15,000BTUS and deep oil pan

blown 346

iTrader: (25)

Trans temps can go above 160 and usually do. Motor temperatures are usually at 160 with a T state. But trans temps can go over 200 degress without problems. A trans cooler that is most suited for Camaro's Pontiacs are 3600 GVW. The smaller coolers will help out but they arent suited to handle this size car.

Arrambide

And how many BTU are equivalent to that weight?

8a8mfh

iTrader: (3)

A BTU is one British Thermal Unit defined as the amount of energy required to change one pound of water one degree.
Engineers use this to size everything that transfers heat like radiators, a/c condensers, trans coolers.

It would be easier to go by GVW, this way it's already been figured into the size of the cooler.

blown 346

iTrader: (25)

Im not exactly sure, what is hte heat rating of One BTU? 36,000 GVW is the cars weight. So a 24,000 GVW would be 24 thousand pounds. Im not sure how to measure the weight and heat into BTU's.

Montec

iTrader: (3)

I don't think the two have a conversion. B&M must have just decided to use BTU's instead of GVW.

8a8mfh

iTrader: (3)

They don't. The definition of a BTU refers to FLUID in pounds, as in pounds of trans fluid, BTU's have nothing at all to do with the weight of the car.

Montec

iTrader: (3)

thats what i thought. In this case B&M just went by a different standard of measurement.

Arrambide

That´s my doubt, because B&M only use BTU´s.

In one of the models, could see that the one that said 13,000BTU, have the GVM term and said 19,000GVM

So "MAYBE" if you said that our FBody need 36000GVM, the sticker of B&M must be of 24,631 BTU??

So, the guys that use the 24,000GVM, use the model of B&M of 16.421 Btu?

The models are
70255 12,000 BTU
70268 13,000 BTU
70264 14,400 BTU
70273 15,000 BTU
70266 20,500 BTU
70274 29,200 BTU

SO, I´m using 70268 and deep vented pan, and dont have converter.
Would be better to install other 70268 or 70273 so have two?, or install only 70266, or leave the one I use?.

MrDude_1

iTrader: (4)

you should already have two.

you should be retaining the stock cooler, and supplementing it with your aftermarket cooler... NOT bypassing your stock cooler and running only the aftermarket one.

Arrambide

Yes, I understand, I have conected the B&M, well, first the radiator, then goes to Aftermarket cooler, and then to Tranny.

Montec

iTrader: (3)

bypass it, its a restriction. There really is no need to keep your stock cooler, unless you live with snow on the ground 9 months out of the year.

BlackHawk T/A

iTrader: (3)

B&M does not only use BTU's. In fact, I haven't seen that yet. The popular B&M that a lot of people on here (including me) run is the 24,000 GVW unit.