I want to be able to drive the truck hard and not have to worry about the tranny puking out. The first drive was great It shifts short and crisp. I did have to pull my trans crossmember down on one side and lower the transmission to get it to come all the way out. I called my tuner and he recommended this servo upgrade.

I dont plan to make 600 hp any time soon, a solid 400 would make me happy for a while. The transmission (4l60E) felt lazy or slower shifts with the extra power. Pros: Pretty much bulletproof in stock form, add a shift kit and servo's and you can put some big power through themĬons: Heaver, bigger (need floor and firewall hump to fit 47-53 trucks), consumes more power than the 60 (so worse fuel economy?) Pros: smaller (may fit without a firewall and floor hump?), lighter, cheaper initially, easier to findĬons: less durable in stock form so would probably have to get it built up which costs extra $$$ Here is how I see it (but looking for more input from you guys) Maybe they arent intended for towing or lead foot drivers? It really suprised me when I found out it had a 60 considering how heavy those SUV's are.

It came out of a 2002 Escalade, and originally had a 4L60E behind it, but it did not come with the engine. I have a 6.0L GM LQ9 engine I plan to put in it. Trying to plan ahead on my 1950 1/2 ton truck.

Corvette servo 4l60e pros and cons