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727 Mega Viper - Level 3
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Our level three high performance 727 transmission comes with a Fairbanks TransAction Kit, levels 2 or 3. This kit will firm up all the shifts with your choice of two performance levels. We use high performance Red Eagle clutches and Kolene steels. A performance low / reverse servo that will not flip in the bore. A heavy duty intermediate band strut that will not bend. A rigid type Kevlar band and a 5 to 1 ratio kick-down lever, talk about your good 1-2 shift. This transmission is good to go, for any type use, race, tow, heavy duty and others.
You get all of the above for $1388.00 for a Small Block and $1488.00 for a Big Block. All without a trade-in. These are 2WD gas transmissions built for non-lock-up torque converters. The freight runs $100.00 to $150.00 in most cases.
Levels 1, 2 and 3 Price Crart Home
Convert
your 3 speed to a 518 overdrive transmission, click here.
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727 / 904 High Performance Parts

Yellow numbers come on the 727 Mega Viper transmission.
Ask about our quantity and transmission builder parts discount.
Convert
your 3 speed to a 518 overdrive transmission, click here.
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Combo Kit
#K10. Fits all 1971 to 1997 Dodge 727 transmissions. You get the #5XX Alto 727 high performance master rebuild kit with all RedEagle clutches and Kolene steels. Master kit contains all gaskets, metal / Teflon sealing rings, metal clad seals and all friction and steel plates to rebuild one unit, the #10430 Fairbanks TransAction kit. This TransAction kit will work on 727 transmissions with both 6 and 8 cylinders. Delivers full manual control at any speed which increases the overall performance level and a #4X Intermediate band lever, Mopar Performance 5.0 to 1 lever Hemi type. This special 5 to 1 ratio kick-down lever for the 727 automatic transmissions can be used as a replacement on the 426 Hemi transmission, and to speed up front band actuation on 727 transmissions to firm up the shifts. All three for $187.00. SAVE $31.00 HERE !, a full 14.5% OFF
#K10-904. Same as the above K10 Combo Kit but for a 904 transmission. Fits 1972 up 904 transmissions. Cost $163.00
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Combo Kit Rules: It doesn't get any better than this folks, now you can have your parts and save money too. You may be eligible for other discounts on any parts needed for your rebuild, if you buy them at the same time as the master rebuild Combo Kit. The torque converters can be deducted from any Combo Kit except E4OD / 4R100 kits at the price charged in that kit and you'll still receive the same discount rate on that kit. Any other parts for that type transmission can be added to a Combo Kit at the same discount rate for that kit, up to 10%, if not already listed as an add-on / upgrade for that kit. Build your own Combo Kit: Buy any 3 part numbers for the same type transmission at the same time that totals $450.00 or more and receive a 7% to 12% discount depending on what you buy. |
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# 10430. Fits all 727 / 904 transmissions. Fairbanks TransAction Kit. This TransAction kit will work on 904 and 727 transmissions with both 6 and 8 cylinders. Delivers full manual control at any speed which increases the overall performance level. Cost $64.00
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#2. 727
Transgo stage 2 shift kit. TRANSGO
shift kits instantly reprogram automatic transmissions for high
performance and durability. |
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#46RES. 518, 46RE, 727 performance rear band servo (GAS not 904). Many Chrysler A727, A518, A618, and A904 transmissions experience rear servo piston sticking / breakage, pin bore wear, and reverse band slippage. The servo piston has a tendency to get cocked in the bore and there is insufficient force to apply the band in a direct line. The high reverse line pressure continues to apply against a cocked piston, causing piston breakage. The bore of the piston also wears from side loading, resulting in insufficient band apply pressure. Cost $19.00 |
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#3. 727 High performance low / reverse servo. This newly designed piston is much wider and uses a teflon support ring along with a lip seal to create a completely stable piston. This piston will not flip in the bore. Cost $48.00
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#3SS. The Chrysler Manual Control Shaft Seal Saver Kit The Chrysler shifter seal saver is designed to be an economical way to add support to the manual control shaft at the case to help prevent a leak at the seal. The shifter seal saver will work on all 904 -727 -42RH / RE - 46RH / RE- 47RH / RE- 404- 413- 670 units. This problem solver will service 3 units per package. Cost $16.00 |
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#3SC. Intermediate servo cover. In vehicles with 727 ('71 & up), 46RH/RE & 47RH/RE transmissions it is common to have long slide 2-3 shifts, direct (front) clutch failure or poor line pressure. These complaints can be caused by the front servo piston cover bore wearing. Sonnax has now designed an upgraded front servo piston cover with an o-ring in the bored diameter. This o-ring provides positive hydraulic seal on the servo rod for the direct (front) clutch and prevents hydraulic cross leaks. Cost $24.00 |
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#518SS. Dodge 11% Oversize Intermediate Super Servo. Fits 727, 46RE, 47RE, 48RE, 518, 618, 46RH and 47RH. Combine this servo with the above servo cover for best results. You get the heavy duty band strut for free. There is nothing else like it on the market. Cost $89.00
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#3S. This intermediate servo spacer works great to clean up the 1-2 shift as well as better time the servo release on the 2-3 up-shift. The 3-2 kick down will clean up as well. 727 servos can take two spacers while 518 / 618 servos will only require one. This problem solver will supply 5 spacers per box. Box contains 5 spacers only, no servo. Fits 904, 500, 727, 518, 46RE, 47RE, 48RE and others. Cost $8.00 |
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#3S2. 46RH/RE / 47RH/RE / 48RE / 518 / 618 / 727 Dual Ring Intermediate Band Servo and Intermediate Servo Cover. Zero leakage 2nd gear band apply. The stock servo can have more than a 10% pressure loss at the rings. The servo cover has a brass bushing and lip seal at the steel servo shaft. Cost $165.00
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Billet Aluminum Dual Ring "Zero Leakage" Accumulator Piston #3A. 46RH/RE / 47RH/RE / 48RE / 518 / 618 / 727 Billet Dual Ring Accumulator Piston. Zero leakage top and bottom. Comes with 4 SPX GoldStripe steel rings. Cost $59.00 |
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ON SALE #3A2. 46RH/RE / 47RH/RE / 48RE / 518 / 618 / 500 / 727 / 904 Cast Aluminum 4 Ring Zero Leak Accumulator Piston. Comes with 4 SPX GoldStripe steel rings. Cost $29.00 |
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#3A3. 46RH/RE / 47RH/RE / 48RE / 518 / 618 / 500 / 727 / 904 Cast Aluminum 2 Ring Accumulator Piston. Comes with 2 SPX GoldStripe steel rings. Same as above but with 2 rings. Cost $15.00 |
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| Rigid
Red Eagle
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Rigid
Kevlar
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Rigid
Carbon Fiber
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#4X. Intermediate band lever, Mopar Performance 5.0 lever Hemi type. This special 5 to 1 ratio kick-down lever for the 904 and 727 automatic transmissions can be used as a replacement on the 426 Hemi transmission, and to speed up front band actuation on other 904 and 727 transmissions to firm up shifts. Placing one pound of force on the tip of the apply lever causes 5 pounds of force on the band. |
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| 1 for $22.00 | 2 for $19.00 each | 3 for $17.00 each |
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#4. 727 Heavy duty intermediate band strut. Reinforced, it eliminates bending and buckling under extreme heavy duty or performance applications. Cost $14.00
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#4BS. Fits 518 / 618 / 727 transmissions. This Heavy Duty Band Strut is made from Case Hardened 1018 Carbon Steel to provide a more durable product. The strut has been plated and is 100% Thicker (240 thou. versus 120 thou.) than the OEM product. Cost $21.00 |
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#4LG. 727 / 904 Torqueflite 4.2 Ratio Band Lever. Placing one pound of force on the tip of the apply lever causes 4.2 pounds of force on the band. Cost $39.00
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#4R. 727 / 518 / 618 Relined Red Eagle Rigid Band. We have 10 in stock. Cost $57.00 |
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#4XX. 727 Carbon fiber rigid front band 1971 -1989. This band is 2 inches wide. (OUT OF STOCK) Cost $62.00 |
#4XXX. 518 Alto Red Eagle rigid front band. This band is 2 inches wide. (OUT OF STOCK) Cost 62.00
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#4NR. New 2 3/16 inch Rigid Red intermediate band with 9 small oil groves. This band is about 10% wider than the original band and works with a stock drum. Fits all 727, 518, 618, 46RH, 46RE, 47RE and 48RE transmissions. Cost $159.00 |
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2 1/2 inch wide Hemi band. Used in all Hemi 426 Torqueflites 1964-1971 and 440-6 Pack Torqueflites1970-1972. Requires a wide Hemi Torqueflite front drum and rear drum, and should be used with a 4.2:1 or 5.0:1 lever. |
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#4LR. 727 Raybestos low / reverse band. Late 1991 up takes a 518 band. Cost $24.00 |
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#4-999. 904 / 999 Rigid Kevlar Lined Front Band. This band is 1 3/8 inches wide. (OUT OF STOCK) Cost $32.00 #4-904. 904 / 999 Rigid Red Lined Front Band. Use this one with an aluminum front drum. This band is 1 3/8 inches wide. (OUT OF STOCK) Cost $28.00 |
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#5-999. Extremely rare 500 / 904 Rigid Black Carbon Fiber Lined Front Band. This extra wide band is 1 3/4 inches wide. (5 IN STOCK) Cost $47.00 #5-904. Extremely rare 500 / 904 Rigid Red Lined Front Band. This extra wide band is 1 3/4 inches wide. (OUT OF STOCK) Cost $47.00 |
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#4ED. Extreme Duty Brass Impregnated Carbon Fiber Flex Band. This band without question is the worlds best Dodge flex band. Fits 48RE, 47RE, 46RE, 618, 518 and 727 transmissions. No one else has this band. Cost $34.00
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#4K. 727 / 518 Carbon fiber flex band. This band is 2 1/8 inches wide. Cost $25.00 |
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#K22950C. 727 1971 Up, TransTec Overhaul Kit. Comes complete with all gaskets, metal clad seals, O-rings, lip seals, pump bolt washers, dip stick boot and SPX steel rings. Cost $36.00 |
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#5XX. 727 high performance master rebuild kit with RedEagle clutches and Kolene steels, 1971 -1997. Master kit contains all gaskets, metal / Teflon sealing rings, metal clad seals and all friction and steel plates to rebuild one unit. Cost $135.00 |
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#28742. 727 Red Eagle clutches for forward and direct. These measure .061". Using this clutch plate in the direct drum will usually allow 1 extra plate, 5 in the place of 4. Cost $8.64 each. |
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#28701K. 727 Alto Kolene steels for forward and direct. These measure .068". Cost $5.40 each. #28701K216. 727 Alto Kolene steels for forward and direct. These measure .085". This selective steel plate is used for adjusting clutch pack clearance. Cost $6.48 each. |
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ALTO / PATC Red Eagle Power Packs |
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#8UW. The Ultimate Weapon. Seven clutch Billet steel direct drum (#8X6) with Red Eagle clutches, Kolene steels and a thin backing plate. It comes with fifteen return springs (#5S) and a fifty five percent oversize apply piston. This is the equivalent of 10.85 clutches. This is truly the Ultimate Weapon with the equivalent of 262% more clutch apply area than most Dodge direct drums. Fits all 727 to 48RE transmissions. Cost $855.00 |
#5-904. 904 / 999 high performance master rebuild kit with RedEagle clutches and Kolene steels, 1972 up. Master kit contains all gaskets, metal / Teflon sealing rings, metal clad seals and all friction and steel plates to rebuild one unit. Cost $111.00
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PATC 727 to 518 Conversion Kit |
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#727518. With these four parts you can convert your 727 transmission to a 518 overdrive transmission with locking torque converter. Lets say you drive an average of 400 highway miles per week, at that rate you could save as much as $1000.00 per year on gas, not to mention the 31% reduction in RPM. Your new 518 will have automatic shifts into overdrive and lock-up, no toggle switch needed. The instructions are at the bottom of this page. Cost $119.00 |
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4 Pinion Steel Front Planet Assembly for the 727 Add STRENGTH and RELIABILITY to your 727 transmission This is a direct replacement front planet assembly that has been manufactured with a steel spline instead of aluminum as in the OEM version. The unit uses the OEM thrust washer for easy installation. When ordering, due to spline differences, you MUST specify the production date of your transmission. Cost $375.00
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Allow 1 to 2 weeks for delivery. Works with full manual valve body only. |
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#8PG. After market 6 pinion rear planet gear. Retrofits all 3, 4, and 6 gear applications, 727, 518, 618, 46RE, 47RE and 48RE. This gear looks good. Cost $126.00 |
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#5G. 904 rebuilt front planet gear with ring gear. This is the early 1968 to 1978 type, 4 1/2 inch ring gear and four pinion gears in a steel carrier. Cost $68.00 |
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#8GR. 48RE Heavy Duty 6 Pinion Rear Planet Gear. Retrofits all 3, 4, and 6 gear applications, 727, 518, 618, 46RE, 47RE and 48RE. This is an OEM gear made with better steel. Cost $230.00 |
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#8S2. It is often difficult to reduce the total transmission endplay in some 727, 46 or 47RH / RE transmissions. Excessive total and / or rear unit endplay is often the result of gear, snap ring and / or spline wear. Rear unit endplay can be difficult to reduce with available selective washers. When rear unit endplay is loose the total unit endplay measurement is excessive also. Sonnax offers a .010" shim which is installed between the OEM thrust washer and the rear planetary. Ten shims per bag. Will not fit 48RE transmissions. Cost $11.00 |
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#5V. 42RH / RE, 47RH / RE, 904, 727 Throttle Valve Kit. Fixes shift timing concerns and throttle buzz, cures late 2-3 upshifts, reduces oversensitive 3-2 downshifts. Hardened steel throttle valve kit restores worn valve body, works best in heavy-duty / towing applications. Repairs excessive throttle valve and sleeve wear. This Sonnax repair kit both salvages valve body and restores throttle control. Cost $38.00 |
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#12. In vehicles with Chrysler RWD transmissions, the manual valve does not allow the converter to be charged in park. This causes delayed engagement and converter bushing failure. Sonnax now offers an upgraded, re-designed manual valve 22771-09 that allows converter charge in park. Fits Chrysler RWD units 1978 up with TCC. Cost $20.00 |
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The "Full Metal Jacket" Steel Sleeved Aluminum Drum Is here ! #5XX. The 518 / 727 Full Metal Jacket Direct Drum delivers the strength and durability of a steel drum with the rotational weight reduction of a aluminum drum. This is also a safety feature for very high horse power motors. Cost $595.00 Ideal for those that use their vehicles on both the Street and Strip. Only 5.5 lbs - 2 lbs lighter than the OEM Drum. Holds up to 5 full thickness friction plates or 6 Red Eagle. The Kit includes the following;
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#5S. 727 / 518 Direct Drum Spring and Retainer Kit with 15 springs. This gives a fast direct clutch release. Needed if you turn over 6,000 RPM in 1st or 2nd gear to keep from burning the direct clutch plates. Cost $69.00 |
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#5X. 727 billet steel direct drum. This is also a safety feature for very high horse power motors. Cost $535.00
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#8D. High capacity 4 clutch direct drum holds an additional clutch over the weaker 3 clutch direct drum found on almost all 727 transmissions. This is a 33% increase in holding ability. This drum holds 4 full thickness clutches. Cost $59.00 |
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#8D6. High capacity extreme duty 5 clutch direct drum holds 2 additional clutch over the weaker 3 clutch direct drum found on almost all 727 transmissions. This is a 67% increase in holding ability. This drum holds 5 full thickness clutches and can hold 7 red clutches when used with the #8FBP backing plate. May require some machining if it hits the forward drum, only on some. Cost $399.00 |
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#8D6R. The rear drum (forward clutch) on the left is the old style drum. If you have a problem with the front drum (direct clutch) rubbing the rear drum buy the new style drum on the right. Cost $112.00 |
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#8X6. 727 Torqueflite Billet Steel Front Drum and X-Large Piston. This is also a safety feature for very high horse power motors.
Cost $645.00 |
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#9D. The highest tech aluminum 904 drum to hit the market today. Designed to carry up to 5 friction plates, utilizing a larger diameter piston yielding greater clamping force. This all translates to superior performance at exceptional value. $575.00
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#9S. Designed for those higher horsepower engines, this 727 performance product has been tested to 1,400 foot pounds of torque. Input shaft and hub. Cost $649.00
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#8FBP. 48RE / 47RE / 727. Special Forward Clutch Backing Plate to install 5 clutches in place of 4 clutches. This is a 25% larger clutch apply area. - - - - - - - - - - - - Can be used with the 5 clutch direct drum to get 7 clutches in direct. This is a 40% larger clutch apply area than a 48RE. Cost $39.00 |
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#10RD. Torqueflite 727 Rear Drum. Take a load off your transmission with this new Billet Aluminum Rear Drum. Cost $225.00
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#10SS. 727 Lightened Reaction Sun Shell. Cost $165.00
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#10SR. 727 / 518 1990 back bolt in roller clutch. It has 4 bolts and 12 roller positions. Cost $110.00 |
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#6D. 727 Viper Series Torque Converters. Your choice of stall speeds up to 2800 RPM. These converters have all bearing construction and a much better than stock clutch. We need to know what type vehicle, motor and transmission you have. Non-Lock-Up Cost $315.00. Lock-Up Cost $315.00. |
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Non-Lock-Up |
Lock-Up |