Firmer Tranny Shifts

Post by **Walt** » Fri Feb 20, 2004 4:44 pm

Hey everybody, another stupid question that has been answered somewhere else I'm sure. I'm looking for a way to firm up my transmission shifts a bit, but not to the point of breaking the tires loose. I don't want to mess with the B&M deal because of the pump, but I'm apprehensive about a tranny shifting kit. How hard are they to install? Is there anything easier? Also, it cannot in any way void my warranty.

Thanks!

Post by **HenryJ** » Fri Feb 20, 2004 4:51 pm

Hypertech Power Programmer III, HPP3, HPPIII

There are quite a few related threads-
Hypertech Power Programmer
Modifying shift points (Corvette servo)
Firmer shifts-free mod!

Post by **Walt** » Fri Feb 20, 2004 5:13 pm

Does the Power Programmer involve upping the pressure in the Transmission? If so, I'll pass on it. Although I would like to drop my shift points by about 500 RPMs.

Thanks!

Post by **HenryJ** » Fri Feb 20, 2004 5:24 pm

wamason wrote:Does the Power Programmer involve upping the pressure in the Transmission? If so, I'll pass on it....

Why?
Is increasing the pressure to prevent slippage a bad thing?

What do you think the "Tow Mode" on the fullsize does?

Fear not the HPPIII, for it functions without savaging your transmission

Post by **Walt** » Fri Feb 20, 2004 10:14 pm

I have a friend with a 99 S-10 X-Cab 2wd that used a B&M shift improver, and after putting about 80K miles on the truck with the B&M device in use, the started having major Tranny problems. I don't remember what exactly, but the B&M device was found to be the problem.

Rusty · Post by **Rusty** » Sat Feb 21, 2004 5:07 am

I had a B&M shift improver on another truck I had. With it set at level 1, it really didn't shift any harder then the HPP3 does. Level 2 was quite harsh though. If your friend drove around in Level 2 all the time then I could see how it would trash his tranny. Even B&M said not to use that level all the time.

Oh and Henry, it's "Thou shalt not feareth thy HPP3 for it doest not savage thy transmission". Man, don't you ever read Shakespeare?

(too bad the spellcheck doesn't work on that cause I probably got it wrong too)

Post by **HenryJ** » Sat Feb 21, 2004 7:19 am

wamason wrote:I have a friend with a 99 S-10 X-Cab 2wd that used a B&M shift improver, and after putting about 80K miles on the truck with the B&M device in use, the started having major Tranny problems. I don't remember what exactly, but the B&M device was found to be the problem.

I don't have any personal experience with the B&M shift improver, but like anything if not used as directed it may indeed shorten the normal service life.
There is no way of telling if there were other circumstances that contributed to his problems.
I personally do not believe that a little increase on transmission pressure is a bad thing for our stock 4L60E. However, the pressure can be raised to the point of creating problems, in continual use, of that I'm sure.

AZS10Crew · Post by **AZS10Crew** » Sat Feb 21, 2004 7:37 am

The thing with the B&M as far as I know is that it's either at no extra pressure, or it bumps the transmission to max pressure. And max pressure on low throttle takeoffs for 80K miles is a bad thing. The HPPIII is better because it's not at max pressure all the time...and it's adjustable so you don't have to set it at max firmness if you don't want to.

Post by **Walt** » Sat Feb 21, 2004 9:21 am

Well, that does make me feel a little better about it....now to find the $300 bucks.....I guess I could sell something....but what? This will take a little more thought. Thanks for the help!!