I'm installing a .500 boost valve and need help deciding between the vette servo or the billet servo. Would I notice a huge difference between the two even with the boost valve? I'm mainly trying to firm up the 2nd to 3rd shift, it slips sometimes. Trans was rebuilt a few months ago and a B&M stage 2 shift kit was added at that time. thanks.......

 

anyone?

 

I dont think any servo is going to fix a slipping trans

Vette servo $20, Billet ones are what...$80 so youd notice it in the wallet for sure. Id go with the vette one.

 

we use the 094 servo and piston in all of our performance rebuilds.(vette servo)the billet pieces are a waste of metal in my opinion and generate new transmission concerns when installed/there is now no cushion spring so brutal 1/2 shifts at low speeds are introduced,3/2 backshifts when lifting the throttle are bangy and annoying,band lugs snap off ,band anchors break,the case bore around the pin get shocked and opens up,.the .500 will generate about 235 psi max line hot however i dont think you wil see a performance gain without the use of a quality shift kit such as ours,we address the line bias ,accumulator,and 3rd accumulator issues to give you performance.

 

i use the billet servo's in just about every build and shift kit install i do including some where i install just the billet servo. i've never had a single failure previously mentioned caused by the servo. the closest thing i've had was a broken reaction carrier and one broken input shaft/drum, but that had way more than just a billet servo. to me, the corvette servo isn't even worth the change.

 

"The billet pieces are a waste of metal in my opinion, and generate new transmission concerns when installed, there is now no cushion spring, so brutal 1-2 shifts at low speeds are introduced, 3-2 backshifts when lifting the throttle are bangy and annoying, band lugs snap off, band anchors break, the case bore around the pin gets shocked and opens up."
I agree with the above statement. In all of my builds, I use the Corvette servo, even the 10 second rides. If you address the 1-2 accumulator (match it to the engine, rear end gear ratio, & torque converter), the size of the 2nd gear feed hole in the valve body plate, line bias, etc., you will have more than enough holding power, without the extra strain on the geartrain from the billet servo. The main benefit is the 2-3 shift is improved because the Corvette servo is the 3rd gear accumulator. I add the "D" Viton sealing rings to the 2-4 apply pistons, to lessen the leaks at the apply & release side of the servo.

 

awesome info, thanks guys!