Ordering B&M shift improver
Im glad Ive got a 98.
Bigger injectors, and a 39.95 dollar part that will let me select 2 trans performances modes and an off button.
Anyone have one of these? Whats your take on it?
Thunder Racing has them for '98 only Z28s/TAs pn: 59-70380.
http://www.thunderracing.com/index.c...ategoryid=1081
Bigger injectors, and a 39.95 dollar part that will let me select 2 trans performances modes and an off button.

Anyone have one of these? Whats your take on it?
Thunder Racing has them for '98 only Z28s/TAs pn: 59-70380.
http://www.thunderracing.com/index.c...ategoryid=1081
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All that switch does is jack up your line pressure. Too much line pressure is a bad thing.
Those are bad for a trans! Stay as far away as you can. A fully installed TransGo (one washer) with billet servos barks the tires on my truck at 4500rpms!
I am pulling the washer in the 1-2 accumulator to tone down the 1-2 shift early next week...the excessive weight will kill my trans with shifts that hard.
Stick with TransGo for better shifts all over and a better acting trans.
I am pulling the washer in the 1-2 accumulator to tone down the 1-2 shift early next week...the excessive weight will kill my trans with shifts that hard.
Stick with TransGo for better shifts all over and a better acting trans.
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From: san antonio, tx
i have one on my tahoe, and i never use it, what pos, it's either normal shifts or a hard ***, knock your head off shift, it's still on there, i just never use it,
go get your money back,
allen
go get your money back,
allen
I've had one in for a year with no problems.
The first setting is all I tried and it's fine. The second setting is probably
too much The shifts are firm-a lot firmer than stockand it works fine with a
converter which tends to soften the shifts up to the point where you can't
hardly feel them. I've used it with both a Yank ST3000
and a SS3600.
As far as boosting line pressure, three guesses as to what a HPP III or a
Predator do.
Boost line pressure.
Duh.
I've got a HPP III and am going to turn off the Shift+ to see how the HPPP III
compares. I'll bet it's damn close.
The first setting is all I tried and it's fine. The second setting is probably
too much The shifts are firm-a lot firmer than stockand it works fine with a
converter which tends to soften the shifts up to the point where you can't
hardly feel them. I've used it with both a Yank ST3000
and a SS3600.
As far as boosting line pressure, three guesses as to what a HPP III or a
Predator do.
Boost line pressure.
Duh.
I've got a HPP III and am going to turn off the Shift+ to see how the HPPP III
compares. I'll bet it's damn close.

