R-Steffen 99ls1

Ok I'm sure there are threads all over about this but I'm new to this so I'm gonna ask. What kind of shift kit/improver kit or both should I get? What benefits are their? What's some down sides? And how difficult? Only trans mod is a circle D 3200 11" stall.

R-Steffen 99ls1

3:90 gears also if that makes a difference.

jblankenship

iTrader: (5)

Transgo hd2

warriorcustoms

iTrader: (10)

2nd the HD2!!! You can install a bunch of it in car & save the rest for when you rebuild your trans...

Cajun ELESS-ONE

corvette servo also

mrvedit

The Transgo HD2 and the Sonnax Performance Pack are both excellent shift kits. Avoid the B&M shift kit as it can actually damage your trans and drivetrain (it is only suitable for 16 year olds driving V6 cars).

Here are a bunch of threads on shift kits:

https://ls1tech.com/forums/automatic...questions.html
https://ls1tech.com/forums/automatic...d2-yes-no.html
https://ls1tech.com/forums/automatic...hift-kits.html
https://ls1tech.com/forums/automatic...shift-kit.html
https://ls1tech.com/forums/automatic...m-70360-a.html