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Corvette Servo 700R4 4L60E 4L65E 4L70E 4L75E 700-R4 4L60 Automatic Transmission 2nd Gear HP Piston
OPT Product Code: NTP-K51828C$26.94
(5)
Reviews: 45
Product Details
Corvette servo piston kit for the GM 700R4, 4L60, 4L60E, 4L65E, 4L70E, 4L75E THM700-R4 MD8
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.
Right away you'll notice faster and firmer 1-2 shifts and even slightly better 2-3.
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.
For the price, the Corvette servo is the best upgrade you can make to your 700R4, 4L60E, 4L65E, or 4L70E automatic transmission. Installing this servo in lower mileage vehicles can add years to your transmission’s life. Higher mile transmissions can also benefit and help to postpone a costly rebuild.
This servo is easy to install and can be done with the transmission in the vehicle.
The recommended servo travel is 1/16”-1/8”. 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 long servo pin option on this item can help to get this travel within the correct range. We are finding that when using the billet overdrive servo in conjunction with the corvette servo, this correct travel range is crucial. Any travel over 1/8” can create a situation of no overdrive.
The kit comes with all of the necessary seals for installation including the outer cover o-ring.
This servo works in all makes of this transmission. GM, Cadillac, Chevrolet, GMC, Pontiac, Oldsmobile, Hummer, Isuzu, Saab, including:
Buick
- Rainier, 2004-2007
- Roadmaster, 1992-1996
Cadillac
- Brougham, 1994-1997
- Escalade, EXT, ESV 1999-2006
- Fleetwood, 1994-1997
Chevrolet
- Astro Van, 1985-2005
- Avalanche, 2002-2008
- Blazer, 1982-2005
- C1500, some C2500, 1993-1999
- Camaro, 1982-2002
- Caprice, 1982-1996
- Corvette, 1982-2005
- Impala SS, 1994-1996
- S10, 1993-2004
- Silverado Truck, 1982-2013
- SSR, 2003-2007
- Suburban, 1982-2013
- Tahoe, 1993-2013
- Trailblazer, 2001-2009
- Van, 1983-2013
GMC
- Canyon, 2004-2012
- Colorado, 1994-2012
- Envoy - XUV – Denali, 2001-2010
- K1500, Some K2500, 1993-1999
- Safari Van, 1985-2005
- Sierra Truck, 1982-2013
- Sonoma, 1993-2004
- Syclone 1991-1993
- Typhoon 1991-1993
- Van, 1983-2013
- Yukon, 1993-2013
Hummer
- H2, 2003-2007
- H3, 2006-2011
Isuzu
- Ascender, 2003-2009
- Hombre, 1996-2000
- Pickup, I280, I350, I290, I370 2006-2009
Oldsmobile
- Bravada, 1991-2004
- Custom Cruiser Wagon, 1982-1992
Pontiac
- Firebird & Trans Am, 1983-2002
- GTO, 2004-2006
Saab
- 9-7, 2005-2009
Industry Part Number: K77895
OEM Exchange # 8642079, 8673039, 8647351
These transmissions are part of the Turbo-Hydramatic series and are also known as: 700R4, 4L60, 700-R4, TH700-R4, MD8, THM700R4, THM700-R4, 4L60E, 4L60-E, 4L65E, 4L65-E, 4L70E, 4L70-E, 4L75E, 4L75-E, M30, M32, M70.
The Corvette servo works in all models and years of this transmission, including: 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, and 2013.
(5)
Reviews: 45
Fast / Effective / Accurate
Nothing but good things to say about this company their product and ease of installation. Product arrived in perfect condition, as advertised and quick too. 10/10
Isaiah
04/04/2024
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Vette servo 4l60
Best upgrade for the least money you can get. Shipped quick. One thing no one tells you about install is that it takes QUITE a bit of pressure to get cap to pop in far enough to get snap ring back in. Aside from that, nothing to it.
Todd
02/25/2024
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All good
I have purchased this product before for another truck. Works well and firms up shifts. Good merchandise promptly shipped !!
Terry Gladden
12/03/2023
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Should extend the life of my worn out transmission
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. This was under very light load, and likely would have been a lot more RPM slip at high throttle/load. I threw this in for a cheap try to fix and it has helped a lot. No more RPM flare, although I think the shifts are still taking longer than they should, but this should help the clutches a lot. 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.
I put this in a 2003 Tahoe (265k miles) with transmission still in vehicle. I didn't have enough room to get the pin and piston out until I dented some small flap of sheetmetal out of the way, which didn't need to be sticking out anyway. Even removing the C clip my pin would not come out, and I found out after removal that the pin had a very tiny burr on the lip which would not let it pass through the piston separately until it was sanded off. So those may be 2 issues you fight if you try to remove while installed in vehicle. Good luck! This cheap and simple to replace part probably bought me a lot more time on this transmission.
JS
06/26/2023
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Thanks guys!
My freebie junkyard 95 k1500 recently had a lift, 35’s & 4.11 put in the front after obtaining a semi floating rear. Next was the 4L60E, so I had someone else do the work & 4K later, I noticed it would drag on wot 1-2 shifts occasionally instead of a normal quick shift but not all the time. I was worried about it & decided to just throw one in rather than pull it just to check it out. I have a derale remote trans filter & thought maybe the filter was greatly limiting PSI at high rpm, I’m glad it wasn’t the case.
These guys were quick to ship & even sent pages of instructions for those who need guidance. Popped the old one out with the gasket even installed since it was new, put the new one in & was off shifting firmly again 15 min later.
The old one was def not checked during the rebuild, it flops around like a fish on land. Now I’m worried what else they didn’t catch but these things happen with the barter system I suppose.
I appreciate you guys helping my trans live longer!
Brandon
03/03/2022
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2 of 2 customers found this helpful.
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Best mod for the buck!
More than satisfied with my purchase, completely removed my 2-3 flare and stiffened 1-2 which was unexpected to say the least. Thank you OTP I'll be ordering from you guys from now on!
Shaun R Childers
02/06/2022
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Corvette Servo
Fast shipping and packed nicely. Haven't installed it yet since the truck is in the shop getting the engine rebuilt. Will install as soon as I have the truck back.
Devon Furderer
06/03/2021
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Makes a HUGE difference!
Installing the Corvette Servo really added life to my truck. It now feels confident shifting from 1-2 and 2-3. Even with 35" tires, it gets up and goes. Installation was easy enough, took about an hour. Shipping was also super fast. I would recommend this to everyone who wants positive feedback from their transmission!
Josh
04/03/2021
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Corvette servo
I haven't installed yet but im positive ill be impressed. as for my review for Oregon performance i cant say enough good things...fast shipping,quality product,very professional and would highly recommend them to anyone for any transmission needs of any kind. The kind of people you want to do buisness with !!!! 10 stars
Leland Dean Dennis
03/29/2021
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Cheapest mod for trans
Easy install, great performance
Clay Miller
12/29/2020
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Just do it !
Great price, easy install. I really appreciate the parts breakdown that was included. I installed this in my 2007 Silverado classic (4L60e) and it immediately improved my 1-2 shift response its a nice crisp shift. Wish i would have done it sooner. Thank you.
Orlando
12/27/2020
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1 of 1 customers found this helpful.
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Do it! (Corvette Servo (1-2), Long Pin, & Superior Super Servo (3-4 Overdrive
Amazing! 285K mi on '01 Suburban 1500 (5.3L, RWD). 1-2 shift was delayed until 3500 RPM, and then 2-3 happened almost immediately. 3-4 had always been soft & barely perceptible. NOW, after installing the Corvette Servo, AC Delco long servo pin, and the Shift Super Servo 4th Apply Piston and cover, the tranny is like new. Shifts are firm and confident but not slammed. At 25% throttle I 1-2 and 2-3 happens before 35 mph and keeps RPMs below 2000. Not measured yet, but am pretty sure I'll see in increase in MPG. 3-4 is noticeable now but again, not slammed. Perfect. Glad I did the whole package. I will likely do this to my son's 99 Silverado, and any other 4L6xE vehicle I own going forward. Love it!
Did in an afternoon on a gravel driveway, BTW. Definitely a DIY with a little RTM and "YouTube Certification training".
Only ding is that I called OPT for one question, and got sent to VM. Sent the question in via the web, and didn't get an answer until the Tuesday after I installed the parts on Saturday. I guessed the answer well so NP.
Here was my Q and the A for someone else's benefit. If you get the whole package like I did, the "SUPER SERVO" "4th Apply Piston & Cover" comes with it's own instructions that say to leave out "spring A" if "this servo is being used along with the "Superior 2nd Gear Super Servo". The "Corvette Servo" that OPT sells that I am reviewing here is NOT the "Superior 2nd Gear Super Servo" so I DID use "spring A". YMMV.
Joe Maddox
12/24/2020
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3 of 3 customers found this helpful.
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Excellent Transaction
Great price, quality parts, and fast shipping very happy customer
Mike D
11/01/2020
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Corvette Servo
This is my second Corvette Servo bought from OPT. Great service and great price and great value. A must have for better trans performance.
Ron Basham
10/19/2020
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Unbelievably worth it
Second time ordering this part from them. It's the best mod for any vehicle with a 4l60e. Makes it shift so perfect. Firm and tight shifts instead of slow and slippy. Takes about an hour to install yourself. So worth it!
Braden
10/17/2020
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Impressive
This day and age it's hard to find a quality item at a great price. But this is.
Raymond
09/04/2020
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Best money you can spend on a 4L60e
My truck was not as easy as they show on youtube because the tunnel was in the way of removing the part as a unit so it needed to be rebuilt on the truck. Still pretty easy and well worth the results.
ddevine
07/29/2020
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2 of 2 customers found this helpful.
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Best bang for your buck!
Super satisfied with this after a fresh rebuild its seems like a totally different transmission I would recommend this to everyone!
CHRISTIAN S BURNS
07/07/2020
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Every Stock Trans Needs This
The kit was complete with the servo parts, as well as a replacement seal for the cover. The kit also came with great paper work showing how to assemble the parts. This kit made my stock 700R4 shift like it should have from factory. No more lazy shifts, with floating overlap. The shifts are quick and firm, while still maintaining comfort. Shifting is not harsh, just firm and quick.
06/28/2020
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1 of 1 customers found this helpful.
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Must have!!!!
Fast shipping!!! Awesome quality part best 20 bucks I have spent so far....
Mikey
06/10/2020
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2 of 2 customers found this helpful.
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Best 20$ mod
Shipped out fast and best price for a high quality part. I'm rebuilding my trans at the moment and adding the shift kit and this servo. Can't wait to get it back in the truck. Would definitely recommend these guys. 👍
David Ethridge
03/15/2020
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It works!
Best $20 I've spent on my silverado classic crew cab. It's not a hard shift. It's an accurate shift. No more sloppy seconds!
Patrick
02/20/2020
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2 of 3 customers found this helpful.
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Best money spent.
Installed the Corvette and OD Super servo and finally my Silverado shifts out like it should. Very noticeable difference. Also I didn't need the longer pin. This is one of the few performance upgrades that I have done that I actually feel was worth the money and it was easy to do.
Richard 01/13/2020
01/24/2020
Verified Buyer
2 of 2 customers found this helpful.
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Best upgrade
I did the corvette 2nd and the superior super hold together. I bought the longer pin but ended up not needing it. Shifts way better and just feels better. Amazing customer service and a simple install!!
Dayn
01/16/2020
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1 of 1 customers found this helpful.
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Money well spent
Night and day difference just by the throttle response alone.
John
01/08/2020
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Great service great product
Service was great. Answered all my questions. Servo make a shifts firm and quick without any slip. Shipped fast also
Hunter B Brasfield
10/26/2019
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Servo
Service was great all around fast response to questions fast shipping product works exactly as supposed to for a good price! Very happy with the purchase.
Ken Vail
12/09/2018
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2 of 3 customers found this helpful.
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Awesome Upgrade!
I used to have a really sluggish 1-2 shift and I ordered this servo because it was only $20 and I saw everywhere that it fixes it. Boy did it ever. My transmission shifts like it should’ve from the factory! Shipped in exactly the amount of time that was quoted and they had a great price!
Austen
11/19/2018
Verified Buyer
3 of 3 customers found this helpful.
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Perfect upgrade
Installed on my 02 silverado. Works just as described, shifts are firm...no hesitation. Best upgrade for the money!
Tyler
07/25/2018
Verified Buyer
2 of 2 customers found this helpful.
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Great service
Fast shipping, corvette servo made shifts much better
Jordan
05/23/2018
Verified Buyer
3 of 3 customers found this helpful.
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Corvette servo
If you want better performance, this is a must have product. Also the guys there are great to work with very knowledgeable.
Mike P
05/20/2018
Verified Buyer
1 of 1 customers found this helpful.
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What a difference
Quick shifts. Makes a big difference for the price.
Sam
03/17/2018
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Corvette servo
Tight'n up 2nd and 3rd gear shifts, big difference in shifts quickness .
Rick T.
03/17/2018
Verified Buyer
3 of 4 customers found this helpful.
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Love them!
Installed them with about 50k miles. Loved them right off the bat. Put over 250k on them until I sold my truck and still see it around town!
Jeremy
01/11/2018
Verified Buyer
3 of 3 customers found this helpful.
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Corvette Servo "Nice"
I just want to say that this made a nice improvement in my 1999 2 door 2 wheel drive 5.7 Chevy Tahoe 4L60E with a heavy duty shift kit. Made shifts nice and positive feeling. Now Im looking to buy the Superior 4L60 Super servo billet 4th gear piston and cover. This was a super easy mod and super cheap. Best bang for the buck!! Highly recommend!!!!
Shawn Johnson
01/08/2018
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3 of 3 customers found this helpful.
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Cheap price for a nice upgrade.
I was skeptical that it would really do anything. Made a big difference . Thank you
Stuart
12/21/2017
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3 of 3 customers found this helpful.
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WOW!
Put this Corvette servo in my 2005 Tahoe and it made a HUGE difference! 1 to 2 shift is much faster and super firm, 2 to 3 shift is noticeable as well. Fast 3 day shipping, easy install, and great product!
AJ
10/19/2017
Verified Buyer
4 of 4 customers found this helpful.
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Outstanding!!
I ordered one of these Vette servo kits back in 2009 from your eBay store, and I installed it on my 2001 Suburban. 8 years later and my truck STILL shifts great, it will even chirp the tires sometimes from a 1-2, and even a 2-3 shift when I am flooring g the gas pedal. This small upgrade along with a Blackbear Performance tune have been some of the best upgrades I have done to my truck.
Scott Haydin
09/12/2017
Verified Buyer
7 of 7 customers found this helpful.
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Great product
Works great and easy to install!!
John wolf
07/17/2017
Verified Buyer
4 of 4 customers found this helpful.
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04 Chevy Silverado servo upgrade
Recieved package in 2 days! Took my time to install it to make sure everything was right and for the money this an easy upgrade. Can tell a difference in shifting. Shifting from 1-2 was sluggish but after installing this servo it has firmed it up quite a bit. Highly recommended!
Tyler
06/19/2017
Verified Buyer
5 of 5 customers found this helpful.
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Nice!
Correct parts shipped quite fast, what more can you ask for! Quality kit with everything needed to do the servo upgrade.
Rob
04/27/2017
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4 of 4 customers found this helpful.
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No brainer. Must have upgrade.
This upgrade is cheap and OPT sends you everything you need including the o-rings. Shipping was fast and everything fit as described. The labor in itself is pretty straight forward and requires a bit of patience working in tight spaces. The results are pretty impressive with tighter shifts from 1st to 2nd.
Dan Hwang
03/31/2017
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7 of 7 customers found this helpful.
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Corvette Servo
Great bang for the buck, simple install & made a big difference in a 2006 Yukon Denali. Still shifts soft enough down low for when my wife drives but a big difference in heavy throttle situations & a drop in operating temperature too. Do this to your vehicle, you won't regret it.
James Wilson
03/12/2017
Verified Buyer
7 of 7 customers found this helpful.
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Great upgrade
Got the servo in a couple days. Installed this last weekend. Not to hard to install. Could definitely feel the shifts firmed up.
B
02/13/2017
Verified Buyer
3 of 4 customers found this helpful.
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Best bang for the $$
For my 2004 Yukon. This made a huge difference for how much it cost. Installed myself in about 30-40 minutes. Highly recommended. You can feel the shifts. Hopefully should add some extra life to the transmission.
Adam
02/09/2017
Verified Buyer
7 of 8 customers found this helpful.
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-th.jpg "ATSG 700R4 Rebuild Manual 4L60 GM Automatic Transmission Overhaul Book Service Guide 87-1993 700-R4")
