So the general idea is that without this engine breaking band? you should not down shift from 3rd to 2nd from a 65 roll. Why would you delete this band? Is that only for the RMVB? Also are there any built trannys common for ls1's (4l60E,4L80E) that delete this band?

Even with the band it's still extremely hard on the transmission to downshift from 3rd to 2nd from a 45-65 or so roll? Is there anything that can be done about this because honestly that's where I hammer it from the most on the street. Also could this be why my transmission is slipping from 2nd to 3rd now?

I really wouldn't like to loose a foot!

 

It is not designed to take engine braking in2nd gear... period. It was designed to be upshifted, it was not designed for the type of duty you are putting it through.

As far as the slippage, that is probably worn clutches, and yes donshifting and hitting it can be abusive to those clutches.

g

 

You can downshift from a roll, just put the gas to the floor a split second BEFORE or while down shifting.

 

i've heard of rmvb th350/400's being built without engine braking and the people that run them seem to not have any problem downshifting from 3rd to 2nd on the highway so long as they give it a little gas.

 

So are you trying to rev match it like a M6 car almost?

 

Id like this clarified also.I just ordered a PTC th350 without the engine braking band.Thanks

 

No, you really need to look into how a manual trans works vs an automatic.
You need to rev match a manual to get the sliders to line up with the synchros, etc. Those are hard parts.

You don't need to rev match an automatic because when it shifts it applies a clutch. In a th350 it 'stacks' clutches on shifts, meaning first applies fwd, second keeps fwd applied and applies the second clutch, third keeps fwd, second applied, and applies direct (3rd).

You need to rev match a manual perfectly, all you have to do to downshift a manual th350 or th400 with no front band is have the rpm higher.

This question comes up too much. It freaks everyone out just the mention of it everyone that has or is thinking of getting a mvb starts to panic.
It's not a big deal to learn to drive a new type of trans.

 

Its not that hard to get used to a manual valve body. Just remember when cruising its a good habit to get into 3rd and not downshift until your almost stopped. I have a Rossler TH400 and made some mistakes while learning to drive it.....starting in third, coasting in second (not at high speed) and the like and it didn't hurt the tranny.
Most likely the damage in the picture came from downshifting after a quarter mile pass most likely over a hundred miles an hour.
After getting used to my RMVB I would not hesitate to drive it everyday if I had to.