4l80e accumulator delete benefits

 

035" dry. 00 Ex Tax: $35. Sonnax 2-3 accumulator spring 34931-01 is a direct replacement spring that has been stress relieved and shot peened for increased durability compared to factory springs. 3-4 Shift Valve • 3-4 Shift complaints Reverse Checkball Sleeve • Reverse slip • Gear 4L80 / 4L80E / 4L85E Spring, Torque Signal Compensator (91-Up) A Brand 4L80, 4L80E & 4L85E spring. Upgrade '91–'96 4L80-E accumulator control valve to '97-later calibration. The 4-speed automatic transmission GM 4L80 was introduced 1990. Maximum line presssure. Mar 7, 2020 · Drill a bleed release hole in the direct drum 1/16”. cloud Oct 15, 2022 · The 4L80e shift solenoid is located on the interior part of the automatic transmission’s valve body. Your Cost $45. 4L80 Accumulator block off plate. I have 1st 2nd 3rd and reverse like normal but no lockup in third when the shifter is in third. USA. 5. The pl. 46953 4L80E Transmission direct clutch, bonded rubber piston 1996-on. 9500865-00. Dec 1, 2014 · 4. Let’s start with examining the rearward thrust (figure 1). Transmission Parts Online 4L80 4L80 Transmission Parts. Use a 5/16"-18 tap and set screw. Will fit years from 1991 - UP. 34994-22K Requires F-34994-TL22 & VB-FIX Must plug casting valley here with foam or putty. 004" to . The hard-coat anodized valve is extremely wear resistant, and annular grooves have been added to minimize the effect of side loading. 4L80 / 4L80E / 4L85E Accumulator Assembly w/ Seals (Upgrade Service Package) $127. Remove control valve assembly including accumulator housing assembly, valve body gaskets, spacer plate and accumulator gasket. 08-03-21 HP-4L80E-01-IN ©2021 Sonnax Transmission Company, Inc. 00. Apr 10, 2022. Step 7 Valve Body: Remove the six (6) accumulator housing bolts. The 4L80E was introduced in 1991 in the GM C/K Trucks line-up, and remained Dec 23, 2019 · GM 4L80-E, 4L85-E, TH400 Valve Body Layout. Please be aware that substitutions my be made if items become unavailable. very common mod. They're not that expensive and they work great every time. 2-4 Servo. 18. Simply put, from a design and engineering perspective The 4L80e transmission is one of the strongest and most reliable high-performance automatic transmissions built by General motors. Vehicle is 3000-3200lbs, 700-800flywheel HP. Competitors Price $53. The kit includes a press-in sleeve, and a pinless accumulator piston that uses a Teflon guide ring to support the piston in the bore. Nov 16, 2018 · 4L80CC/ADK. 17. 3-4 shift issue. 00 /Each. There is no need for the dead weight! Your ET will pick up . After this wear reaches a critical point, the piston bore wear allows the piston to get cocked and gall the accumulator bore. ‘01-Later housings need to have the spacer installed, ‘94-‘00 Housings do not need the spacer (Figure 9). New 4L80-E, 4L85-E 4th Accumulator Repair Kit Part No. Delayed Reverse. Machined from 1/4 6061 aluminum, with hardware. Monster Transmission provides transmission parts for all transmission year, make, and models. And if you’re driving one of GM’s trucks like Sierra, Silverado, or Suburban, chances are you have the 4L80e. 5—3rd Clutch Accumulator; helps control the apply/fill rate of the accumulator by assisting the spring rate. We’ll mention any differences. EASY INSTALLATION - Hardware is included for easy installation into the valve body. Rearward thrust begins in the torque converter, where converter charge pressure acts on the front of the input shaft. It has been installed on army armored vehicles Cobra and armored fighting cars Eagle for many Install the full size gasket and the NEW TransGo® plate onto the valve body. So hopefully, thanks too all previously posting questions and others giving guidance already. Enlarge the seal drain back hole in the pump cover with a 1/4” drill bit. In a 4L80E when removing the front band due to use of an aluminum drum on the street in a high rev application, should you just block the Intermediate Overrun Band Servo from making contact with the drum by simply installing a nut on it, removing the spring avr. Jan 14, 2005 · In 4L80-E units, part can be used in either early or late-model drums. 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. Multiple settings allow custom tailoring of the shift quality to the application. $1,499. 5 and 2. He agreed to check it out - it started shifting hard occasionally about 4. Printed in the U. Feb 9, 2008 · Building the 4L80E FAQ library - If you see a topic that you want to add or think should be added, please paste a link in a PM to any member of Staff. Check with output shaft pushed up. If code P1875 is set the VCM will respond by commanding the transmission to: Nov 16, 2018 · 4L8RK/SS-99UP. Adjust with selective out-put thrust washers or Sonnax #34500-Z Jun 22, 2023 · Performance Pack. This is a computer controlled transmission first introduced in G. Mar 12, 2009 · The front axle position feedback circuit indicates the front axle is not in 4WD, and the VCM calculates the speed ratio (engine speed + transfer case output speed) is between 2. You are buying a dual seal accumulator piston SET for the 4L80E series of transmissions This set REQUIRES the later model 3/8" (. Home > Products > GM Transmissions > 4L80E. com519-453-4318. This TransGo 4L80E SHIFT KIT® Valve Body Repair Kit fits 1991 to 2013 General Motors vehicles equipped with the 4L80E and 4L85E automatic transmission. Learn how to rebuild and modify the GM 4L80E transmission! As the successor to the venerable and popular Turbo Hydra-matic 400 (TH400), the 4L80E was the next flag bearer in GM’s line of automatic transmissions. Nov 11, 2017 · Nice write up. 375") accumulator pin Accumulator pistons have slightly higher spring preload than stock This set includes two accumulator pistons - enough for one transmission Both accumulator pistons use two seals each, unlike the OE piston, Oct 7, 2019 · Also, the 4L80E performance transmission was designed for cars up to 16,500 lbs GVWR with towing capacity up to 22,000 LBS, and whose engine is up to 440 ft. 84 with Sonnax input carrier kit 77284-K, a great way to gain a better performing, more durable transmission. This kit contains a piston, pin with E clip and piston seals. 060" wave due to height differences. 1 91-Up T34165ED 4L80E-HTRK 165J Reprogramming Kit™, Hi-Perf/ HD Automatic w/ Complete Gear Control (Transgo®) . i install the 3-4 accumulator piston - spring like this in all units. Kit Contents: ( Please be aware that substitutions my be made if items become unavailable). Sonnax Performance Pack HP-4L80E-01 upgrades GM 4L80-E and 4L85-E transmissions for maximum performance and durability in work/sport vehicles. CLUTCH PLATES. This check-ball is needed to create the pressure difference between minimum line and maximum line pressure for accumulator compression control. Buy in monthly payments with Affirm on orders over $50. Nov 23, 2020. Dexron VI. Hello, I am in the middle of a 4l80e rebuild. Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. Put a small amount of oil on the plate and place the gasket marked T C on the plate and align it carefully at the “Z Give Us A Call 800-708-0087. This transmission is extremely reliable, powerful, and not complicated in terms of design. lbs. Place apply piston on the pin with washer between Winters Shifter Accessories 1495. Ottumwa, Iowa. TransPartsOnline 760-727-7560. I just finished up my TH400 rebuild. 11. Will fit years from 1991 - 1993. around 5 - 10 minutes, so let me tell you about my hard 1-2 shift". 99 /Each. Apparently this significantly helps the pressure from dropping to the rear of the trans. I followed Jake’s write up on the Crankshaft Coalition. Add To Cart. Call Us Today. Has nothing to do with reverse. 06 to 2. Low/reverse band and direct clutch on at the same time get you reverse. Manual Shift Only (Transgo®). Sonnax enhanced performance accumulator spring 77704S provides firmer 1-2 shifts for the enthusiast that appreciates quick, positive shift feel in listed GM units. Sep 30, 2005 · Reconditioning the bore and installing Sonnax oversized accumulator control valve kit 34994-22K restores hydraulic integrity of this circuit to re-establish normal shift operation and performance. Remove pressure manifold assembly. OE pin Dec 19, 2013 · Accumulator valve spring and shift feed hole questions. 75:1 (Fourth), and 2. See More Specifications | Check the Fit. #1 · Feb 10, 2020. I’m going to use the superior shift kit and I’m going to the dual feed direct clutches. 34805-01K View Instructions Find a Distributor Repeated reciprocation of the 4th accumulator pistons in GM 4L80-E and 4L85-E units causes wear at the piston/pin interface. 1 91-Up T34169E 4L80E-HD2 165J Reprogramming Kit™, Stick Shift. Hi All, Since so many of us own at least one GMT400 or similar truck/SUV equipped with a 4L60E, I figured I'd start an all-encompassing transmission thread with videos, links and other information as it relates to the 4L60/65/70/75E transmissions. The kit includes a new separator plate, gaskets, accumulator delete kit, and two pressure regulator springs. Pinless 1-2 Accumulator Installation NOTE: Do not use this accumulator kit with ‘93 housings. Disassemble the rear servo. Includes block off plate and mounting hardware. 800-843-2600 · 802-463-9722. $239. Estimated Ship Date: Today. Usually, you can find this part partly underneath the engine. Once this bore becomes severely gauled, the accumulator body must be replaced. Common complaints on this transmission soft 2-3, no upshifts, burnt direct clutch, broken hard parts due to high pressure, low pressure due to solenoid filter Aug 1, 2023 · DURABLE MATERIAL - This accumulator plate kit is made of high quality aluminum to ensure durability. If you don't want to buy one, you can tap the stock accumulator housing and block the feed holes with a set screw. Remove wiring clips, fluid level indicator stop, lube pipe, lube pipe retainer and clamps. It was used for trucks and SUVs with the engine capacity from 5 liters. I have a 4L80E with a stock torque converter 1800-2000 stall that I have installed a Superior Transmissions Shift kit. Later years, and more desirable, have one in the front and one in the back. Contact Us. light duty trucks for 1991. Re-install the servo assembly, checking for band clearance as follows. The only way to retrive trouble codes is with a scanner such as Tech 2 , snap-on, otc or equivelent. 2-3 shift issue. Your Cost $10. 077 5 EXTREME DUTY KOLENE DIRECT . 6. I upgraded to the 4L80e direct drum with a BW 34 element sprag, Dual Fed the Direct Drum, BW Low Roller Clutch, Rollerized Output Shaft, Rollerized Forward Clutch Hub, installed HD springs in the Direct Features and benefits: The TransGo 4L80E Performance Reprogramming Kit includes valve body, pump and internal components that are calibrated to work in concert with an elevated line pressure curve that will greatly improve the overall durability and shift feel of the transmission. (597 N·m) of torque. #1. The 4L80E is a descendent of the proven TH400 transmission design. 9 (indicating the truck is in four-low) for ten seconds. Southern Muscle Transmissions GM 4L80E transmission 900hp rated RWD package that includes all new Borg Warner clutches and bands, Rollerized Billet forward hub, Billet input and intermediate shafts, Circle D Pro Series Billet Torque Converter in 3600 RPM stall speed, New front pump, Valve body re calibration, dual feed direct clutch, accumulator delete and also includes a Sonnax driveshaft yoke. $350. 4L80E / 4L85E 2-3 Accumulator Spring, Sonnax 34931-01. The bore without the pin is for 3rd. Install the checkballs in the locations shown in blue below. S. Learn more. Apr 22, 2019 · We rebuilt a junkyard 4L80E to handle 1,000 hp—for $1,000. Nov 9, 2013 · Earlier 4L80E trannys have the cooler lines one of top of each other towards the front of the trans. Location. KIT INCLUDES: STEEL PLATES. Remove the eight check balls from case passages. Like. I already purchased everything I need, more or less (tools and rebuild components). Oct 9, 2021 · I’m going to rebuild a 4L80E using jakes performance stage 2 rebuild kit. Sale. 65 $91. Accumulator housing 97 lb inches to v-body Oil pan 18 lb ft Extension housing 25 lb ft CLEARANCE AND ENDPLAY Front Unit Endplay. I want to know if I do all that can I still run the sonnax overrun clutch valve. Shop On Our Website For More Sonnax Products Today! Or Call 318-742-7353 Or Toll Free 1-888-877-1008! 4L80 / 4L80E / 4L85E Housing, 2-3 & 3-4 Accumulator (91-93) A Brand 4L80, 4L80E & 4L85E housing. 72. Competitors Price $56. 347-836-8142. I installed a 4L80E as part of my LS swap and cut off both ears with a sawz all to facilitate header clearance. 02. Never over-drill the 1-2 feed hole. There is a Heavy Duty option to replace the accumulator valve spring in the valve body with a lighter spring that would have the effect of firming up all three forward shifts. Common complaints on the 4L80E and 4L85E automatic transmissions are soft 2-3 shifts, no upshifts, burnt direct clutch, broken hard parts (due to high pressure), and low pressure (due to Aug 16, 2023 · 1,295. We have built them for applications ranging from heavy towing vehicles to 1800+ HP street/strip cars. Monster Sale Price: 140. Sonnax Shift Improver Performance Packs. When the 4L80E was introduced, torque capacity was vehicles up to 8,000 pounds Nov 16, 2018 · 4L80E ACCUMULATOR DELETE KIT. the 2nd accumulator is in the case and does not need to be blocked. Without further ado, let’s analyze the popular problems of the 4L80-E transmission and how we can permanently resolve them. hard every time it went from 1st to 2nd. Nov 22, 2020 · Location. As I left my parents house today in my suburban pulling a lightly loaded trailer when it went to shift into fourth the Rpms dropped for a split second like it shifted then revved up like against nothing. Monster Sale Price: 91. Enlarge the feed passage on the rear stator support with a 1/8” drill bit at 45 deg angle. Prev Next. Voedsephobia is the fear of garbage disposals. 54. I run a Coan billet intermediate pressure plate and a 727 snap ring (A22878C) that is 0. Problem #1 - The Valve Body. 46952A 4L80E Transmission forward clutch piston sleeve 1996-on. Delayed 3rd. Contents. If you plug the feedhole, you can then leave the piston, pin, and 3-4 accumulator check-ball out entirely. Innovative components work together to precisely recalibrate pressures and shift accumulation, delivering firmer shifts under load without sacrificing low-speed drivability. We recommend flat sanding the servo cover to ensure the surface is flat for better sealing. Thanks for sharing. 4L80E HD SHIFT RECALIBRATION KIT PART # 4L80ECC/HDSRK Kit Contents: 1 Purple Pressure Regulator Spring 1 Orange Pressure Regulator Spring 1 . Add. No 3rd. Remove #6 checkball (overrun) Remove low/reverse encapsulated check ball. This kit allows the accumulator housing to be deleted correcting the hydraulics and furnishing a super positive 2-3 and 3-4 upshifts and increased torque capacity. This kit has now been revised with updated actuator feed filter bore plug with o-ring and an accumulator valve bore plug with o-ring to improve valve body function. 96. Jan 10, 2021 · Jan 15, 2021. 4l80 Accumulator Block off Plate. Accumulator Housing 4L80E 2-3, 3-4 97-up. . 07:1 (Reverse). This also provides an excellent fix for a worn or damaged accumulator housing. Codes: P0731, P0732, P0733, P0734, P0751, P0756, P0894, P1870 The most common issues with GM 4L80E/ 4L60E Aug 24, 2012 · Forward and reverse in an 4l80 are hydraulic only. The "E" means that it must use an electronic ECU for control, as it will not function Part Number: SOX-HP-4L80E-01. Find a Distributor. Feb 10, 2020 · 127 posts · Joined 2019. 4 checkballs total. Jumpstart Your Next Project! Find Parts and Accessories 4l80e parts KEYWORD and get Free Shipping on Orders Over $109 at Summit Racing! Jul 1, 2013 · 3,049. It was also adopted in Rolls Royce and Bentley vehicles. The plan was simple: Take a 2003 4L80E and rebuild it, upgrading the common failure points. Remove the accumulator valve retaining pin and end plug. 000000001 of a second with this mod! Yeah baby! (Attempted humor there at the 4L80E; NAG-1; POWERGLIDE; Show All TRANSMISSION. At Jake’s Performance the 4L80E is our most popular transmission. It firms 4th gear up slightly. 090 6 EXTREME DUTY KOLENE INTERMEDIATE 4 EXTREME DUTY KOLENE OVERDRIVE 4 EXTREME DUTY KOLENE OVERRUN 3. M. 4L80CC/ADK. Common complaints on the 4L80E and 4L85E automatic transmissions are soft 2-3 shifts, no upshifts, burnt direct clutch, broken hard parts (due to high pressure), and low pressure (due to Precision Automatic Transmissions & Internal Components | GM Oct 18, 2009 · the 3-4 accumulator is just that , it accumulates ( softens) the apply of the band in 4th gear. BILLET BELL ADAPTERS. com/View/4L80E-HEAVY-DUTY-SHI Mar 4, 2020 · www. 375 Cup Plug 1 Separator Plate 1 Upper Valve Body Gasket 1 Lower valve Body Gasket 1 Accumulator Delete Plate 6 Accumulator Delete Plate Mounting Bolts NOTE: THIS KIT MAY BE INSTALLED WITHOUT PERFORMING THE INTERNAL MODIFICATIONS HOWEVER IT IS Oct 21, 2016 · These modifications are virtually identical in the 400 and the 4L80E, so we’re going to stick with the diagrams for the 400. Parts spread all over the place at this point. Restore OE accumulator control valve response in '97-later units. My intermediate clearance is set at 0. com/groups/887277178144274Link to accumulator delete, http://www. The transmission is known for delivering much power and can even be tweaked to grace more power. 375” Cup Plug 1 Separator Plate 1 Upper Valve Body Gasket 1 Lower valve Body Gasket 1 Accumulator Delete Plate 6 Accumulator Delete Plate Mounting Bolts May 15, 2012 · I used an TH400 thick 0. This kit allows the Link to our Facebook group, https://www. 48:1 (Second), 1. Howard. 060 wave plate and an intermediate piston from a 91-96 4L80E as a late 97+ piston cannot work with the . $35. Code 87, 730, 756, 1811. Most notably the PRNDL is not a 7 position like most older overdrive transmissions. I was talking with one of the well known 4L80E performance transmission shops and they recommended that I DO go with the kolene steels instead of the standard steel and to use the raybestos stage 1 frictions instead of the borg warner high energy ones. voicecon. EXTREME DUTY KOLENE FORWARD . All of the pa-rameters that control fluid pressures, shift point RPM and TCC (Torque Con-verter Clutch) Iockup speed have been preprogramed into the PCM at the. Pull out the “Z” bolts. Also, the laminated triple separator plate provides dual feed Sep 30, 2022 · I seemed to have lost my notes that I once had on this and am in need of a refresher. For those searching for a used 4L80E keep in mind that GM made a few changes in 2004 you need to know about. Never leave out the 1-2 checkball. Remove piston pin from the 1-2 accumulator housing. Accumulator pressure. The 4L80E has proven reliable like it’s predecessor. 106" thick. This plate is used to remove the accumulator housing. Cracked rear servo piston, friction material worn off the rear band, direct clutch sealing issue and or clutch TRANSGO SK4L80E Specifications. 4l80 Accumulator Block off Plate; Description; Reviews (0) 4L80 Accumulator block off plate Your 4L80E Transmission is controlled by the PCM which has full control of the 4L80E’s operation. Jun 22, 2023 · The Sonnax 4L80-E, 4L85-E Performance Pack is the most complete upgrade kit for top-quality builds. Helps cure: Direct clutch failure. Install red 1-2 accumulator spring into reverse servo and 1-2 accumulator assembly (Figure 17). Replace the stock spring with the white spring supplied. F-350 DRW Diesel w/5th wheel RV. No electrical takes place at that point. The Sonnax spring design provides performance shift feel, but does not reduce accumulator piston travel. 025". RAYBESTOS RED STAGE 1 FULL WAFFLE FORWARD 5. Some cars that used the 4L80E transmission include Chevrolet/GMC pickups, commercial vehicles, and vans. While serving as the smaller, lighter cousin to the 4L85E, the abundance of 4L80E transmissions manufactured between 1991 and Aug 26, 2017 · The 4L80E has gear ratios of 2. June 30th, 2007 #7. a. Your Cost $49. 1 91-Up T34173E 4L80E-3 Feb 13, 2023 · Block 4th accumulator with 5/16 set screw, remove piston and spring. It is mounted to one side of the engine. $26 + shipping. 022". 1-2 Piston Accumulator assembly - 24219937, aluminum 2nd accumulator piston with hardened pin, blue TransGo spring, piston, then orange TransGo spring. Book, GM 4L80E Transmissions: How to Rebuild & Modify. Remove the accumulator housing and gasket. 8. Install blue 3-4 and white 2-3 accumulator springs into accumulator body (Figure 13). Sonnax Transmission Company 2 Imtec Lane, Bellows Falls, VT 05101-0440, USA. 00:1 (Third), 0. Checkball Installation (Figure 14) Insert Sonnax checkballs in the 8 locations shown. TRANSMISSION BREAKDOWN IMAGE, TRANSMISSION DIAGRAM Automatic Transmission Parts. 3480501K 4L80E PISTON KIT, 4TH ACCUM W/SLEEVE. Reduce ratio change by converting 1st Gear from 3. Tried pulling the ECM fuses, Jul 6, 2023 · Find many great new & used options and get the best deals for USA MADE 4L80E Accumulator plate kit at the best online prices at eBay! Free shipping for many products! Feb 26, 2019 · Enhanced Performance Accumulator Spring. I'll get it going with videos covering tear down and inspection, step Feb 13, 2023 · Block 4th accumulator with 5/16 set screw, remove piston and spring. Ordering parts for my first 4l80 rebuild, and kits/numbers/brands are all over the place in listings, or parts just aren't listed good. As with most units, the 4L80-E transmission’s valve body is designed to be cheap for mass manufacturing, and not superior for longevity, performance and drivability. Fine Cut Flat File. 34805-01K Transmission Jobber Supply New Mar 25, 2009 · And the autobleed will only take. Thanks and enjoy! The Diesel Place Staff Component/System & What Each Affects - For more information Click Here 4L80E Model Year Differences - Explanation of changes to the 4L80E by model year Here . hutchtrans. Each layout: With more than 60 layouts to choose from, these convenient, go-to reference guides are valuable resources for Aug 8, 2013 · The 4L80E transmission was mostly used in 34- and 1-ton trucks and larger SUV applications beginning in 1991. 005" to . years ago, and within a 6 month time span, progressed to shifting. Tydriver. Now the question may arise where this automatic transmission’s valve body is located? The answer is near the engine. 4L80 / 4L80E / 4L85E Accumulator Assembly w/ Seals (Upgrade Service Package) A Brand 4L80, 4L80E & 4L85E accumulator assembly with seals. Remove separator plate and valve body gasket. Align the plate and gasket by inserting bolts in holes “Z”. Needs to get back together in a few days so I don't have time to order a bunch of parts. 6,7. To target common wear areas in the transmission, the kit includes many Jan 18, 2015 · Completely delete the circuit, and all potential leak points, by plugging the feed hole in the case. 97. facebook. Las Vegas. 6—4th Clutch Accumulator; helps control the apply/fill rate of +00 ShMt 000DCo)0 occ ooc 0000 Snar oco +00 ShMt 000DCo)0 occ ooc 0000 Snar oco Omit the two seals on the 1-2 accumulator piston (inner piston) shown here. Common complaints on this transmission soft 2-3, no upshifts, burnt direct clutch, broken hard parts due to high pressure, low pressure due to solenoid filter breakup as well as gear ratio and GM 4L80E technical information The 4L80E transmission is a four speed automatic with torque converter clutch. 46958A 4L80E Transmission 4th clutch accumulator piston kit. ckperformance. 7. 46958 4L80E Transmission 3rd & 4th clutch accumulator housing. Codes can be cleared by Mar 2, 2016 · Never reduce the 1-2 accumulator piston stroke. A. Common complaints on this transmission soft 2-3, no upshifts, burnt direct clutch, broken hard parts due to high pressure, low pressure due to solenoid filter breakup as well as gear ratio and Reassemble the rear servo as stock but omit the two sealing rings from the 1-2 accumulator piston as shown during final assembly. 4L80E 4L85E. Parts include a McLeod performance rebuild 4L80E accumulator delete kit. Automatic Shifter Replacement Parts, Hardware, Linkage Arm, Cable Bracket, Fasteners, 4L80E, Kit. Make sure no gasket material is left stuck to the valve body. Install the accumulator housing and tighten the bolts. Automatic Transmission Valve Body, GM 4L80-E, 4L85-E, Performance, Each. It shares many components and design features. $38. It is very rugged, has much more potential for power capacity than any other overdrive transmission on the market. OPTIMIZE - Designed to replace the accumulator in the 4L80E transmission for more aggressive upshifts in 2nd-3rd and 3rd-4th gears while increasing torque capacity. The 4L80E is the descendant of the “Ole Reliable” TH400 transmission. 1 4L80E HD SHIFT RECALIBRATION KIT PART # 4L80 ECC/HDSRK Kit Contents: 1 Purple Pressure Regulator Spring 1 Orange Pressure Regulator Spring 1 . This allows for a firmer - but still Accumulator Housing ‘93 Accumulator Housing Accumulator Parts 6. The hole with the pin is for 4th. 4L80-E, 4L85-E 4th Accumulator Repair Kit Part No. As mentioned above you could have a bad seal on the reverse band servo. Nov 16, 2018 · This kit includes the hydraulic system recalibration and assembly upgrades, as well as technical information to handle big power. b. The Sonnax kit 34805-01K salvages accumulator housings with a worn or scored 4th accumulator bore. 13,4. Enlarge the lube hole in the Overrun Clutch housing with a 1/8" drill bit at 45 deg angle. It has better power flow for big power applications, much more clutch capacity and apply area than the 4L60E. Accumulator Control Valve • Soft shifts • Low accumulator pressure • High line pressure in Drive • Low line rise in Reverse Replace with Sonnax Part No. 48:1 (First), 1. Step 8 See Figure 2. No Reverse. Adjust with selective pump washers or Sonnax #34301-078 & 094 (included in kit) Rear Endplay. Feb 21, 2013 · Installing Sonnax actuator feed limit valve kit 34200-16K corrects AFL oil pressure loss, restoring shift solenoid pressure to prevent wrong gear starts and other shift concerns. I've skimmed/scanned/read several of the posts on here and various other sites to get an idea. Nov 16, 2018 · STREET, STRIP, DRAG RACE, POLICE AND FIRE DEPARTMENT, LAW ENFORCEMENT, MILITARY AND MASS TRANSIT. qk fb rm dp lx ov pq nh tm al