Here's a simple way to add firm shifts in the 700r4 Transmission if you want them.
The Corvette Servo is usually part of a shift kit but installing it first has its advantages. One for me was the ability to skip the kit and only use the Servo, because it gave me exactly what I wanted.
Nice crisp 2nd gear and 3rd gear shifts .The higher the RPMs the stronger the shifts.
You should be able to buy one for around $25.00
Here's how I installed mine. =
http://sethirdgen.org/servo.htm


Also here's a link to common automotive technical abbreviations and acronyms that I found very helpful in the past.
You might want to save this link for future reference = Common tech Abbreviations and Acronyms - Chevrolet Forum - Chevy Enthusiasts Forums