Hey guys I've seen alot of threads in here about performance enhancers but I have not seen any one talk about after market servos for your transmission. I changed mine out with a jet performance servo and it made a huge difference. It makes your transmission grab way better at the bottom of each gear. The throttle response as a result is way better. They are under about seventy dollars too, just go to the jet website and check it out. It only took me about 2hrs. to do, just becareful when putting on the o-rings. I broke mine and had to go to the dealership for new ones. Not expensive though. Also there is a temperature sensor that measures the air temp that comes into the motor. If you move it to a colder spot you can trick the computer to think there is colder air and as a result squirt in more gas. I don't know why they come from the factory in such a hot location. The newer years have this problem fixed, around 04 i think.

 

OPT sells Corvette servos on Ebay for $12.95 (click). And yes billet ones are better, but there are guys running in the low, low double digits with Corvette servos with no issues. Not being argumentative. They are a definite "must" but can be had for under $20.

Servos don't really improve throttle response per sei, they increase the surface area and thus the apply pressure giving a firmer shift.

Also be sure the rings are seated. Quite a few guys think they're seated and on their first trip out of the driveway, blow the servo out....along with some broken pieces.

 

Okay so I'm just a poor southern boy, so what does a servo do and where is it located in/on the transmission? Also, considering these transmissions are fairly prone to breaking when thrashed, what's the likely hood that this will further increase the chances of hurting it?

 

The servo isn't going to do anything to hurt your transmission. I posted what they did above.

 

Okay but where is it in the transmission?

 

Right above the pan. There's a decent write-up here.

 

That is a good installation guide. Do you know if there are any issues with having shft points already firmed from the computer? Will this just make it slam into gear?

 

That seems pretty cool. I know this only makes the shifts stiffer/quicker but is the result of that a quicker truck in the long run or does it just feel sportier when it shifts? If it is worth it I'd be interested in buying the billet servo. Would there be any problems using this in conjunction with a Predator tuner like it accounting for it and all with the tune?

 

There is absolutely no need to adjust for it in the tune. Again, it just has more surface area than stock, which ups the apply pressure, resulting in firmer shifts. It won't "slam" into gear - it just firms it up. I don't know if in a ¼ mile or on a dyno you would see any visible performance gains, but it's like all of the other small mods - it doesn' thurt. And with these transmissions, they're designed to be comfortable from the factory....sometimes parts "easing" into operation or clutches engaging gently, it actually causes more wear. That's why the 4L60's tend to have the 3-4 clutch packs give out around 100,000 miles...the springs used allow for a nice soft engagement which actually wears on the parts.

 

I didn't experience that much firmer of a shift, it just didn't let my trans. hold more pressure before it shifts. I have a super chips programmer, and have had no problems. It shifts really nice, It will scratch shifting from first to second and I have 35" tall tires. It also helped at the bottom of 1st when I floor it my tires will do a small burn out, before this they barely made a noise flooring it from a dead stop. The servo is one of the mods I made that made the most noticeable difference. I was reading another thread about taking the foam sponge crap off from under the intake manifold. Anyone do anything special? I tried pulling on the front one and it started to fall apart, and the rest doesn't want to move. I don't want to destroy it, any suggestions?