TCI RMVB for 4L80
#4
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We do a full manual valve body (forward) pattern transbrake 4L80E.
We have a Holiday Sale going on now.
I've tested most of the 4L80E valve bodies but I haven't tested the TCI transbrake.
We have a Holiday Sale going on now.
I've tested most of the 4L80E valve bodies but I haven't tested the TCI transbrake.
#6
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I guess the "reverse pattern" valvebody seems "sexy" to some but redesigning the 4L80 valve body to be reverse pattern creates some drawbacks.
Reverse pattern came about on TH400s because it was required to use the modulator circuits for a transbrake and no other functional reason.
I looked at making a 4L80 RMVB and the issue I see has to do with supporting the OD sprag with the overrun clutches in 1-2-3rd gear.
My experience with 4L80s has also taught me that the closer you leave the circuits to stock, the more consistant and reliable it will be.
I suspect Rossler had the same experiences when he designed his transbrake.
Reverse pattern came about on TH400s because it was required to use the modulator circuits for a transbrake and no other functional reason.
I looked at making a 4L80 RMVB and the issue I see has to do with supporting the OD sprag with the overrun clutches in 1-2-3rd gear.
My experience with 4L80s has also taught me that the closer you leave the circuits to stock, the more consistant and reliable it will be.
I suspect Rossler had the same experiences when he designed his transbrake.