4L80E valve body interchange

4L80E Competition Valve Bodies. Auto shift valve body with pro tree fluid release transbrake feature. Transbrake can be activated in Lo range and be manually shifted, or can be activated in D3 range and be fully automatic. Minor ECM tweak permits transmission brake activation in D2 range for second gear start capabilities Our valve body hydraulics have proven themselves repeatedly and our transbrakes have set the standard for release time. We specialize in building the 4L80E for retrofit applications. If you have a 500+ HP musclecar, late model LSx powered car, or other combo that demands THE bulletproof trans, we can build it for you

The 1997 and later 4L80E's have a new lube system that feeds cooler return oil to the center of the case instead of to the front fitting like the earlier models. Many interchange problems can occur by swapping parts between 1st and 2nd design. Following pages show how to ID the parts along with some interchange and failure prevention data 4L60E Valve Body Rebuild Instructions; 4L60E/4L65E Rebuild Kit Options; GM 4L60E Hardware Torque Specifcations; 4L60E Filter Style Guide; 4L80E Hardware Torque Specifications; Marine Transmission Information . Velvet Drive 71C/72C Torque Spec Pressure control solenoid valve [Located in solenoid snout] Fig 3. Since the diameter of the boost valve [.736] is larger than the bal-ance end of PR valve [.625], a lack of #14 oil regulation results in unlim-ited pressure and case, direct drum, direct piston or valve body breakage..625 Diam.736 Diam.853 Diam Figure 3 SK® Pressure Relief Ass You can swap a valve body from 1991 to 1996, but the '97 -04 & '04 -up cases and valve bodies are different and will not interchange. The force motor (EPC solenoid) is the same from 1993 - 2004 (black small diameter) the early '91 - '92 is the large silver style, but you can and should update to the later black style EPC solenoid

ON EDIT(in case somebody in the future references this thread) The valve body difference comes into play if you put a 94+ trans into a 93- truck you either have to use the 91-93 valve body, OR open up the 94+ valve body and drill out the seperator plate as well as swap force motors to make it work so after pricing all the components it will only cost me $1,644 bucks for a 4L80E swap with a tci RMVB w/transbrake,a 3200 stall converter and a dennys driveshaft good to 750 hp. for those of you thinking of doing this swap here is some sound advise. DO YOUR RESEARCH

4L80E Specifications. The 4L80E has a max torque rating of 440 lb.-ft. of torque, giving it a max load capacity of 18,000 pounds. The gearing to move such a heavy load is a 2.48 first gear, 1.48 second, 1.00 third, and 0.75 overdrive. These transmissions can be found behind 4.3 to 8.1-liter gas engines and 6.5 to 6.6-liter diesel engines I talked to PCS today and they don't make their vbm-2000 4l80e 6-speed valve body anymore which had engine braking, and they could not tell me if it would work with the 6x and TCI TCU. 12-09-2020 #18. ULTM8Z. View Profile View Forum Posts Visit Homepage View Articles Registered User Join Date Jan 200 If you're using the factory PCM this is pretty straight forward, just have it loaded with a 80e tune from a Chevy Express 4.8/4L80e or similar. DIY Manual Valve Body: Terminal pinout wires A and B from the pressure manifold are connected together and connected to the ground side of Shift Solenoid A

The 4L80E uses shift solenoids A and B to control upshifts and downshifts in all forward ranges. The solenoids are both powered with system voltage when the ignition is on. Ground is provided by the vehicle PCM in a specific sequence to control shift scheduling (figure 1). Easily Convert the 4L80E to Full Manual Control They say necessity is. The manual valve body is used when a transbrake is not needed, such as tractor pull, monster truck, and other track applications. What year 4l80e will interchange? The 4L80E transmission was introduced in 1991 and remained in production until 2013

turbo 400 to 4L80E swap whats involved. Jump to Latest Follow There are a couple of venders making a manual valve body for them now and TCI even has a transbrake. The options for these tranny's are growing as the crowds catch on. I have to run the 4L80 because of the motor/nitrous and I'm going to drive it to carshows once together so it. Troubleshooting the 4L80E Automatic Transmission Page 9 Transmission Range (TR) Pressure Switch Assembly. This device is a set of five, nor-mally open, pressure switches that detect fluid pressure within the valve body passages (Fig-ure 11). The five pressure switches are connected to three signal circuits referred to as range signals A, B and The Novak Guide to the GM 4L80E Automatic Transmission Introduction. The 4L80E transmission is the advanced progeny of the legendary TurboHydramatic TH400 automatic transmission, and is based heavily on the 400 in both parts and strength, yet featuring an added overdrive gear, a lock-up torque converter and advanced electronic controls 4L60e to 4L80e Swap Wiringhttp://lt1swap.com/4l60e_4l80e_harness.htmMerch Available!https://teespring.com/stores/snidertron3000Instagram @snidertron3000The m.. Curt is in the testing dept to 4L80E Differences between Early and Late models. He's using some 4L80E cores to show the external differences between the earl..

2) I am using an electronic TCM, this can also be done with a manual valve body. 3) I did not get a transbrake but they can be installed as part of the 4L80e build. 4) All wiring to make the PCM happy does seem to be the same between the 4th gen trucks with either the 545rfe (5-speed) or the 65rfe (6-speed) as I've talked with a 2013 and a 2011. Almost all the fasteners in the 4L80E are metric. The center support bolt is an exception and is a 3/8 12 point, same as a TH400. Next remove the valve body, then remove the 3/8 12 point center support bolt and the Torx bolt for the overdrive section that is closer to the front Auto shift valve body with pro tree fluid release transbrake feature. Transbrake can be activated in Lo range and be manually shifted, or can be activated in D3 range and be fully automatic. Minor ECM tweak permits transmission brake activation in D2 range for second gear start capabilities. Deep pan not required. Redesigned oil circuitry provides super positive gear changes, increased torque. Beginning at the start of production for all 1999 model THM 4L80E transmissions, the planetary pinions on both carriers were produced 10% thicker than the previous models, as shown in Figure 1. This engineering change required the addition of a .041 shim in the gear train to re-center th

4L80E Competition Valve Bodies - CK Performanc

Our 4L80E Updates and Upgrades. Fully remanufactured valve body, with complete system correction and recalibration kit, improves pressure control and shift quality. Upgraded actuator feed limit valve prevents missing shifts and premature transmission failure Plate has holes in plate, marked in diagram below. 1st design 3-2 valve 1995: Stand alone year! Will not interchange with any other year. This is a PWM transmission. An extra solenoid was added to the valve body to control the pulsed lock up strategy of the conerter clutch A 4L80E can be made to run without any electronics but it has to be full manual valve body which would get old on a daily driver. Can you manually shift a 4l80e? However, the 4L80E can be easily converted to a manually shifted valvebody, which eliminates the need for the computer and much of the electronics and wiring

4L80E - Jake's Performanc

4L80/4L85 Full Manual Valve Body Conversion Kit. Complete Full Manual Valve Body Gen IV and Gen V LS, LT1 and LT4 Chevrolet Engine 6L80E/6L90E 6 Speed Conversion Kit. $139.00. Out of stock Curt is in the testing dept to 4L80E Differences between Early and Late models. He's using some 4L80E cores to show the external differences between the earl..

As far as where you are stuck, that is your 4th clutch housing. there is a bolt that holds it to the case that is located under the valve body. you need to pull the valve body off to access it. there are 2 bolts that hold parts of the tranny in the 4L80E, i think you got one already. one uses a 12 point socket, and the other uses a hex wrench. I have a manual 4l80E in my HMMWV and yes you have to shift up and down as needed and lock the converter on a switch i mainly only use the OD over 45MHP snd the lock up over 55MPH , the kit i use was trans-g0, using stock valve body however TCI or GM performance {both the same} make a stand along easy to work with and to adjust paremeters, it rquieres a TPS signal ect which you can use the tps. I am also pretty sure the 4L80E has a Manual valve body available aftermarket. That would be what I would do. Atlas 4 speed is the T-case you want. I wouldn't run a 241. So why pick the 5.3L over the 6.0L LQ4/9? for the about the same money and same size/ weight you could have a 6L! Either engine I would do a cam swap and get it flashed 4L80E FAQ ? Jake's Performance One other possibility for you to consider: if you want to keep the car a little simpler and (in my opinion) a little more fun, you could skip all the electronics and go with a manually shifted valve body

I have a friend whose car I tuned with a built manual valve body 4L80E and it was an 8.85 car at over 155 mph - so, they will hold the power for sure! Personally, I loved driving my TA with a manual valve body TH400 - was kinda like having a manual without dealing with the clutch. Depends on what you are looking for really.. This kit will require vaccum from a pump and a restricter valve from something like a 6.5 or 6.2 chevy diesel with a 4l80e trans, the vaccum is for the new vaccum modulator that is required to keep up line pressure like on a th400. This kit will make the 4l80e a manual shift trans, whatever gear you have the shifter in is what the trans will be. Almost all the fasteners in the 4L80E are metric. The center support bolt is an exception and is a 3/8 12 point, same as a TH400. Next remove the valve body, then remove the 3/8 12 point center support bolt and the Torx bolt for the overdrive section that is closer to the front

Originally Posted by GM Media. This transmission is a heavy-duty, high-performance unit (PN 19154550) based on the big-boy Hydra-Matic 4L80, and was designed specifically to accommodate big-block engines. Testing was done on a dynamometer and in real-world, in-car thrashing. In fact, Mr. Kong, the hairy ZZ572/720 crate, was used for evaluation A 4L80E can be made to run without any electronics but it has to be full manual valve body which would get old on a daily driver. What is the difference between 4l80 and 4l80e? The 4L80 nomenclature denotes that the transmission is a 4-Speed, Longitudinally mounted, and for 8000 lbs 3851104K 4L80E ('95 - LATER)LONG VERSION SHAFT KIT, MANUAL SHIFT. 4L80E, 4L85E Manual Shift Shaft Kit. More Information. Competitors Price $29.51. Your Cost $30.00. 3420001K 4L80E VALVE KIT, BOOST W/ORINGS. This kit includes 1 boost valve, 1 boost sleeve, 2 O-rings and 1 balance plug with o-ring 0411 PCM that was a throttle body drive by cable setup. Does not matter if it was a 4L60E or 4L80E BUT having a computer that ran your transmission from the factory from the junkyard is easier. All your normal wiring crap. Soldering Iron, wire strippers, electrical tape or if you want to be fancy heat shrink, wire, etc In addition to the TCI 4L80E being a lot beefier than TH350, it has been prepped with valve body modifications that increased its cooling ability and improved shift characteristics. In other words, it won't heat up as easily, and it has snappier, crisper shifts, yet it's not as harsh as a racing style transmission

REBUILT GM 4L60E VALVE BODY ASSEMBLY | 4209354 | 1998-1999

  1. On the other hand, if a heavy load is hauled or towed and the radiator cooler can't cool the ATF properly, it could lead to overheating of the 4L80E. Consequently, the clutches, valve body, seals, etc can get damaged. THE BOTTOM LINE. The 4l80E is a big and heavy transmission that has come a long way from years ago due to upgrades
  2. 4L80E REBUILT VALVE BODY. GM Vehicles w/ the 4L80E. INCLUDES NEW ELECTRONICS. Fits 1993 -97 98-02 02 UP
  3. Description states: 1) HD pump with all updates. (Old pump old springs old boost valve, scratched gears, old bushings and stock drain back hole size. NO updates, just an old stock pump) 2) Stage 1 shift kit. (Old springs, no drill holes in valve body for stage 1 shift, NO updates, completely stock) 3) Complete new bushing set
  4. Then I would build the tranny you got if it were me instead of going through the hassles of 4l80e conversion. 5 pinion planetary sets all over ebay. Corvette servo can be had anywhere. Kevlar 2-4 band the same. Hi energy clutch kits. Z pack if you wanna spend a few bucks more. Beast sunshell or equivalent and all valve body updates that are needed

GM Transmission Parts - 4L80E 4L85E - Valve Bodies

4L80E wiring So I can just swap my old internal harness into the newer trans and it'll all work? remove the device threaded into the old valve body that the old harness is attached to. swap the harness and that device to other later design trans. watch for bad wires... at that age if the harness is original , expect the wire covering to be. The TCC solenoid would wear out the valve body, leak, and trip the TCC code if the fluid wasn't kept clean by changing it often. My favorite way to kill a 4L80E is to scatter the OD by ruining a bearing or sprag that goes through the gear set. That gear set gets a lot of wear anyway. Was a really exciting noisy lack of a 4th gear shift.. This transmission is extremely reliable, powerful, and not complicated in terms of design. It has been installed on army armored vehicles Cobra and armored fighting cars Eagle for many years.The 4L80 is a famous predecessor the 3-speed 3L80. Many spare parts are interchangeable

4L80E early to late conversion - Pro-Touring

Level 4 4L80/4L80E- Rebuild - Rated to hold up to 1200HP. Convert your 4L60E to a 4L80E!We provide sales and technical support 7 days a week from 8am to 10pm EST. Call us at. 770-781-0949. * (Within Continental U.S. to most business addresses or nearest freight terminal Complete Reconditioned Front Pump 1991-1996 ONLY - See More Inf Is the 4L80E a direct swap for the 4L60E? cause if I remember right the flex plate different. are the harnesses different between the two? will my computer talk to a 4L80E or do I need a different computer. and what years are the same (can I use, lets say a 97 4L80E in place of my 91 4l60E?) and which can I use

4l80E differences??????? The Truck Sto

  1. All lubrication and valve body circuits are carefully inspected and modified for cooler and quicker operation. The 4L80E GM's 4L80E introduced in 1991 is a descendant of the brute Turbo Hydra-Matic 400 (TH400) which is highly successful behind high-torque, high-horsepower V8 engines
  2. Chevy 4L80E Transmission, Combo Kit / Swap Kit to a 4L80E from a 4L60E. #K12. Fits all Chevy 4L80E transmissions. You get all 5 Alto Red Eagle Power Packs for 1st, 2nd, 3rd, overdrive and red overrun, plus a Transgo stage 2 Shift Kit. Transgo Shift Kits instantly reprogram automatic transmissions for high performance and durability
  3. The Street/Strip GM 4L80E automatic transmission fits GM models 1997-2015. Features a 34-element intermediate sprag, high energy intermediate band, new overdrive sprag assembly, new low roller assembly, performance friction materials, all new solenoids and wiring harness, recalibrated valve body, performance pump assembly, steel forward hub
  5. GM 4L80E Performance Transmission Level 2. $3,995.00. Horse Power: 500. (500 Torque) Converter: HD Towing & 4WD Lock-Up. Stall: 1800-2200. CORE CHARGE: $650. ATF: $150. GM 4L80E Performance Transmission Level 2 quantity
  6. Derale 14207 4L80E Transmission Cooling Pan. Free FAST Shipping, 60 Day Returns, Expert Tech Support. Brand New. 4.5 out of 5 stars. 8 product ratings. - Derale 14207 4L80E Transmission Cooling Pan. C $245.63. Top Rated Seller. Top Rated Seller

4L80E swap question Team Chevell

TH400 Reverse Manual Pattern Valve Body. SKU 221580. $297.95. Shop Now. Wish List Compare. TH350 Full Manual Valve Body, Reverse Shift Pattern w/ Engine Braking. SKU 321115. $260.95. Shop Now Isaac Ristow. I have a 85 C30 dually 2wd with a 6.5 turbo diesel. Thinking about swapping to a 12 valve for more power and torque for hauling my farm tractors around. I will tow loads upto 20k trailer weight. I hauled 6000lb last year and it did it fine but wouldn't try anything over 10,000lb. Truck has 54k original miles and is in amazing shape 1989-2002 Cummins to TH400/4L80E | GF-C-S. This 5.9 Cummins to Chevy Adapter Plate and Flexplate Kit accommodates 2002 and earlier Cummins 6BT engines bolting to a Chevy automatic transmission such as a TH400, 700R4, 4L80E, or similar transmission. The G Force adapter positions the transmission straight, not angle rotated as some OEM applications seven 3-4 clutch plates (six plates in a 4L60E), shot-peened output shaft, revised valve body calibration. Here are some areas you should consider when rebuilding a 4L60E: Pump: Pumps for the 4L60E can be found in 10 vane and 13 vane versions. Use the 13 vane pump. The 13 vane pump does not have a higher pump volume than the 10 vane pump 4L80E Transmission with Free Shipping, new lower prices on 4L80E 4x4, 4L80-E, 4L80, Super Duty 4L80E and other Monster 4L80E Transmissions Equipped with a Manual/Automatic valve body, most units allow you to manually shift the vehicle into each gear change or, by placing it in the drive position, remain fully automatic. you will be.

Everything You Need To Know About Rebuilding A 4L80E

  1. 4L80E. The 4L80E was introduced by GM in 1991 to replace the rugged, but aging 3 speed TH-400. The 4L80E was the first fully computer managed transmission in the GM fleet and has proven to be a strong and reliable transmission in 3/4, 1 ton, and Motor Home Chassis, providing overdrive towing capability and precision electronic shift performance
  2. Besides, can you run a 4l80e without a computer? A 4L80E can be made to run without any electronics but it has to be full manual valve body which would get old on a daily driver. Will a 4l60 bolt up to a 350? Premium Member. The 4L60E will bolt straight up to your 350. :yes: You will need some way to control the tranny though
  3. 4L60E Transmission Valve body separator plate 1996-06 with improved design tempered steel for longer life and zinc plated to prevent rusting. Comes with instructions. This 4L60E Transmission valve body plate does not come with valve body gaskets Other products that may be required: 35133BK 4L60E Transmission valve body gasket set 93-2000
  4. Brand. Hughes Performance 25-1CAHD - HEAVY DUTY TRANSMISSION A. $2,758.13. Add To Cart. $2,758.13. Hughes Performance. Details. GM 4L80E. NOTE: If you have any problem installing this transmission, before returning it please call the JEGS technical support line at 1-800-345-4545
  5. The 4L60-E is GM's successful continuation of the ever-improving 700R4 - a.k.a. 4L60 since 1990. The 4L60-E is the Electronically shift controlled version of the 4L60. The Late 4L60-E is most easily identified and differentiated by its removeable bellhousing. It was released in 1996 behind the 4.3L V6 engine
  6. The 4L80E transmission and its twin brother the 4L85-E were heavier duty 4-speed transmissions produced by GM and Turbo-Hydramatic at Willow Run Transmission in Ypsilanti, Michigan. The 4L80E inherited its design from Turbo-Hydramatic's TH400 transmission. The 4L80 transmission came out in 1991 along with the 4L60E as a factory original equipment option for GM trucks as a replacement for the.

Opinions on 4L80E converted 6-speed automatic

There was a new manual valve added along with a relief port over the manual valve on the valve body casting with this change. This solved the low/reverse clutch release problem and makes the TransGo manual valve mod unnecessary (see ATRA bulleting 2002-46). How to visually tell B and D-body transmissions apart by year Will 4L80E Valve Bodies interchange? I have a 93 model and im looking at a 99 model VB on ebay. I want a replacement just Incase i want to convert back to electronic control instead of manual control. Thanks, 89' GMC RCSB 6.0L LQ4, T56, 4.56 Gears. Reply With Quote + Reply to Thread 4L80E Interchange. Question: The electronics as far as the valve body goes are the same. Not sure for a van, but for a truck you have to swap the internal shift shaft, and fab up a bracket to hold the NSBU switch as 94 and older did not use the NSBU switch mounted at the trans whereas 95+ did

Sloppy Mechanics Wiki - 4l80e Information, technical

4L80E Performance Specs. The 4L80E is a manual transmission that has a maximum engine input torque of 440 lb-ft and is capable of providing an output torque of up to 885 lb-ft. Many of the other specifications can be gathered by deciphering the name. From 4L80E, the 4 indicates that the transmission has 4 gears There is an aftermarket low ratio 1st gear set for the 4l80 but its about $900 last time I looked. This spaces the gear ratios out a bit better. Without it the 2nd OD is 1.11. They added 2 extra solenoids OD and over run clutch - if you engage both solenoids you get a trans brake 97 ext cab short bed silverado 5.7 411 swap, edelbrock 29135 intake, factory unported 906 heads milled .035 thou. factory press in rocker studs & rockers, comp 787 retainers & stock locks, ls6 springs. Comp cams 08-503-8 4l80e swap & Fti 3800 hard hit stall Buy Transgo (4L80E-HD2) Transmission Reprogramming Kit, 4L80E Heavy Duty & Competition (Transgo), (1991-Up): Valve Body Kits - Amazon.com FREE DELIVERY possible on eligible purchase

LSx/4L80E swap underway - Chevrolet Colorado & GMC Canyon

Can you use a 4l80e without a computer? - AskingLot

The AFL valve (actuator valve) is a high wear valve bore. Reamed out to larger bore size for a new valve install. This valve works with controlling main line pressure and the PCS. I am talking about modified separator plate for a trans brake design valve body. Oil passages are repurposed in custom valve bodies A valve body check/flush might be helpful. Easy to do since you dont have to remove tranny. Use a light at the end of the valve bore, insert valve into bore and look for light leaks. Just read that 80e's have a known problem with the TCC valve/bore. Could also be the TCC solenoid. Just a thought if you dont want to pay a shop Need info on 4L80E swap in a 04 gto. Jump to Latest Follow 1 - 20 of 20 Posts You can always just go with a full manual valve body and then you dont need the trans controller and dont need to program anything. But you will have to shift the car yourself but no clutch lol. I am sure I am leaving out some stuff but more guys on hear know alot. This model Valve Body has the temperature sensor in the wire harness. This valve body is better than OEM, it features many upgrades to increase reliability over the standard OEM valve body. 4L80E 4L85E transmission Sonnax boost valve kit .Symptoms: broken parts, buzzing noise, high line pressure, high line pressure, uncontrollable line rise Introduction A GM 4L80E transmission controller can control this versatile automatic transmission made by General Motors. It has been used in heavy duty vehicles like trucks, SUVs and utility vans. Its robust design and ability to handle heavy loads makes it a popular choice today in a wide variety of vehicles and custom builds. History of the GM 4L80E The transmission is based on the GM.

turbo 400 to 4L80E swap whats involved El Camino Central

Nov 2, 2019 - Find many great new & used options and get the best deals for GM 4L80E Valve Body 1997 UP 24224909 OR 5716608 at the best online prices at eBay! Free shipping for many products Buy JEGS 60325 at JEGS: JEGS 4L80E Performance Transmission for 1991-1996, Chevy 2WD. Guaranteed lowest price! Save $10 off $299, $25 off $599, $45 off $999, $100 off $1899 Orders A rebuilt front pump and recalibrated valve body ensure smooth-running transmissions with lasting reliability. Fluid Capacitie In fact a 4L80E is basically an electronically controlled Turbo 400 with the extra components to have an overdrive gear. In fact they are so similar many of the internal hard parts will DIRECTLY interchange between the two. Guys use the 5 pinion gear planet carriers from the 4L80E's in the old Turbo 400's as an effort to increase their durability The codes thrown were the tcc, the pressure control solenoid, and 2-3 shift. When I reset the computer it did not throw 2-3 shift when I got the trans to 190. So we are replacing the tcc, the pressure control, 2-3 shift, temp sensor, cleaning the valve body and checking the valve for 4th gear which can stick or the hole can even warp The standard 6BT Cummins works well with the standard 4L80E, but in the case where a customer might be winding up the power and torque then an Extreme Heavy Duty 4L80E is required. The kit is a collaboration between Wholesale Automatics and a number of other parties - Custom Engineering and Mechanical (C.E.M), HGM Electronics who designed the.

4L80E New Center Support 1999 And Newer Trucks - 34630EB

The Novak Guide to the GM 4L80E Automatic Transmissio

April's Sparkle Cat 383 LT1 12:1 flat top + 75 shot 11.66 @ 117 at SSHS17 Nov 11, 2017 2017 12.0 Index Champion 4140 lbs. w/ driver. front sway bar O The SUPERMATIC is assembled with new parts, several upgraded internal components, and a revised valve body. It is supplied with a production torque converter (approximately 1,800 to 2,000rpm stall speed), and requires the GMPP transmission controller (PN 12497316) that is sold separately. It allows the user to customize the shifts to fit.

Install: B&M Shift Improver Kit for 1968-1981 GM TH35009G Valve Body TransGo Shift Kit Intall - TransmissionPOWERGLIDE Valve Body (OEM) | eBayTurbo Hydra-Matic 400 Transmission shift modification

Buy Transmission kit 4L80E, 4L85E, 91-08. Compatible with General Motors trucks and SUV: Valve Body Kits - Amazon.com FREE DELIVERY possible on eligible purchase The Adapter The 4L80e to Jeep transfer cases adapter is compact at only 3.0 long for a combined transmission and adapter length of 29-1/4. The adapter itself is machined of a 6061 billet aluminum alloy, featuring thick flanges and a heavy cross-section.  The Output Speed Sensor If your 4L80 does not have a rear output speed sensor you will need to order the OSS kit and add a. The new design of the B&M® ShiftPlus™ Electronic Shift Improver allows you to improve the transmission's shifting performance without removing the transmission pan or valve body. A simple flip of the switch allows the transmission to operate in the performance mode. Flip it back and you are back to stock!Installs in just minutes, the ShiftPlus simply recalibrates your transmission's.