Upgrading the 48RE!

[justinp20012500]

Justin, this is exactly what I'm refering to. The stock trans need more pressure, not just more clutches in one area.

This new drum you mentioned, I have been using it for two years , and I'm not the first, so I don't call this new stuff anymore.

It is a lot more than just clutch area, which is part of the formula, it is quality control.

I have measured the clutches.

BTW, I'm 52, I would like to know your age and experience level.

Anyone with experience with these auto's knows that the clutch area is smaller for front and rear clutches than the torque converter clutch. If things are built right the sigle clutch converter can and does hold things.

By telling people that they don't need to raise the line pressure is quite missleading!!!!!!!!!!

Let's be honest.

For the record...



I was installing a trans brake today and decided to measure the stock rear clutch area.



Inner dia = 5. 322"

Outer dia = 6. 001"



I am coming up with 6. 0468 square inches per side of friction.



There are 4 friction clutches in the stock 47RE drum. (8 friction sides)



8 * 6. 0468 = 48. 3744 square inches of friction on the rear drum.



If I use my math, 48. 3744 > 34 (34 is the area of friction in the stock TC)



Now if you take a drum/piston combination that I am using you will come up with 72. 5616 square inches of friction.





48RE rear clutch area is 60. 468 square inches.



Justin

 

[bchesley]

Matt400 sorry I just now found this post, I had the VB, TC, Billet servo, and acumalator swapped out. No billet yet. I is going to take me a while to get to the power level to need billet so I did not get it. In the future I might have them upgraded!!!!



Brad