1989 chevy silverado 700r4 transmission install#
1989 chevy silverado 700r4 transmission upgrade#

I put this in a 2003 Tahoe (265k miles) with transmission still in vehicle. 1-2 shift is more like a bump now, but not bad, 2-3 is almost seamless, just about a 300-500 RPM drop at shift which is just fine. No more RPM flare, although I think the shifts are still taking longer than they should, but this should help the clutches a lot. I threw this in for a cheap try to fix and it has helped a lot. This was under very light load, and likely would have been a lot more RPM slip at high throttle/load. I was getting a shift flare (rise about 300-400 RPM) before it would shift in 2-3, 1-2 wasn't quite as bad but it was slow as well. GM, Cadillac, Chevrolet, GMC, Pontiac, Oldsmobile, Hummer, Isuzu, Saab, including: This servo works in all makes of this transmission. The kit comes with all of the necessary seals for installation including the outer cover o-ring. Any travel over 1/8” can create a situation of no overdrive. We are finding that when using the billet overdrive servo in conjunction with the corvette servo, this correct travel range is crucial. The long servo pin option on this item can help to get this travel within the correct range. Getting your servo within this travel range can make the shifts even quicker and add more miles and years to your transmission’s life. The recommended servo travel is 1/16”-1/8”.

1989 chevy silverado 700r4 transmission install#

This servo is easy to install and can be done with the transmission in the vehicle. Higher mile transmissions can also benefit and help to postpone a costly rebuild. Installing this servo in lower mileage vehicles can add years to your transmission’s life.

1989 chevy silverado 700r4 transmission upgrade#

This servo will give your transmission 50% more apply pressure, just what you need to keep from burning your transmission up under heavy load situations.įor the price, the Corvette servo is the best upgrade you can make to your 700R4, 4L60E, 4L65E, or 4L70E automatic transmission. Right away you'll notice faster and firmer 1-2 shifts and even slightly better 2-3. This servo is a must for any performance, towing, RV, or off-road transmission, but would be a nice upgrade for any 700-R4 or 4L60E.

New USA made Corvette servo piston kit for the GM 700R4, 4L60, 4L60E, 4L65E, 4L70E, 4L75E THM700-R4 MD8