1978 GMC Suburban Performance Transmissions

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    • (0 reviews)
      # 351452627
      GMC Suburban Standard Transmission with External Balanced Flywheel 1978, Performance Steel Flywheel by Hays®. Hays Steel Flywheels are manufactured from certified billet material that will not break up under the stress of high RPM and...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $267.95 - $308.95
    • (0 reviews)
      # 73967161
      GMC Suburban 1978, II Series Clutch Pressure Plate by Centerforce®. Push Type Clutch. Rear Main Seal Style: 2-Piece. The Centerforce® II Clutch Series utilizes a full facing disc with premium friction materials and a pressure plate...
      Patented centrifugal weight design (where applicable)Patented ball bearing pressure plate (where applicable)
      $263.95 - $333.95
    • (0 reviews)
      # 1086720706
      GMC Suburban Automatic Transmission 1978, Holeshot Torque Converter by B&M®. The B&M HoleShot converters are an excellent choice for improving acceleration and increasing drivetrain strength in virtually any street machine. An added...
      Furnace brazed impeller and turbineNew precision steel pump drive tube
      $274.02 - $599.75
    • (0 reviews)
      # 257278831
      GMC C15 Suburban / C25 Suburban / K15 Suburban / K25 Suburban 5.0L / 5.7L Standard Transmission without Factory Flywheel 1978, Prolite Flywheel by ACT®. This product is a Prolite flywheel, which is ACT's lighter flywheel offering with...
      Dramatically improved engine response and acceleration, mild to moderate gear rattleHeat-treated forging for strength and toughness, induction-hardened ring gears for maximum life
      $273.00 - $335.00
    • (1 review)
      # 965759000
      GMC Suburban 1978, Street and Strip Automatic Transmission Assembly by B&M®. It is a complete ready-to-run unit for high performance street and mild strip use. The transmission provides firm shifts and features a standard shift pattern.
      Rebuilt front pumpAll new B&M high performance friction plates
      $1,175.93 - $1,211.97
    • (0 reviews)
      # 1086743321
      GMC Suburban 1978, Full Manual Valve Body by TCI®. The competition valve body was designed for maximum performance and quick elapsed times in racing applications. By controlling the valve body only through manual means, quicker shift...
      Designed for maximum performance & quick ETsQuicker shift timing is perfect for race applications
      $221.14 - $279.67
    • (0 reviews)
      # 87541031
      GMC Suburban Automatic Transmission 1978, Circle Track FastLap Torque Converter by TCI®. Looks aren’t everything…but with regards to torque converters, they can hide the secret to winning races. For sanctioning bodies that mandate...
      Satisfy requirements of “stock appearing” converterDesigned with positive lock-up stall speed to eliminate approximately 10% of power robbing slippage
      $270.39 - $430.44
    • (0 reviews)
      # 73967143
      GMC Suburban 1978, I and II Series Clutch Disc by Centerforce®. Push Type Clutch. Rear Main Seal Style: 2-Piece. Centerforce brings together high-quality friction materials and patented processes to give you top-of-the-line discs. Each...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $120.95 - $139.95
    • (0 reviews)
      # 257278827
      GMC C15 Suburban / C25 Suburban / K15 Suburban / K25 Suburban 5.0L / 5.7L Standard Transmission 1978, Heavy Duty Race Single Disc Clutch Kit by ACT®. Does not Include: Flywheel. Disc Outer Diameter: 11". Input Shaft Spline: 1 1/8" x 10...
      Light to moderate pedal effort, aggressive engagement, increased gear rattleModerate friction life, extended by ACT's exclusive diaphragm design, rigid design may increase spline wear
      $417.00 - $466.00
    • (0 reviews)
      # mpn358579246
      GMC Suburban THM400 Transmission 1978, Aluminum Pan by Transmission Specialties®. With Spacer and Bolts. Depth: Deep. Designed utilizing the latest technology, this product by Transmission Spesialties features premium quality and will...
      High quality at an affordable priceExpertly made from premium materials
      $118.61
    • (0 reviews)
      # 492704407
      GMC Suburban Automatic Transmission 1978, StreetFighter™ Valve Body by TCI®. The valve body of a transmission is often called the control valve and has been modified and updated through the years. TCI® selects and uses only the valve...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $203.16 - $340.59
    • (0 reviews)
      # 606033281
      GMC Suburban 1978, Ultra-Cool™ Transmission Oil Cooler Kit by Hayden®. This product is an effective and economical way to keep your transmission at its optimum operating temperature. The high-efficiency turbulators in every tube...
      Compatible with OEM cooler systemsUltrasonically soldered for reliability
      $25.39 - $72.17
    • (0 reviews)
      # 74326962
      GMC Suburban 5.0L / 5.7L / 7.4L Standard Transmission with Internal Balanced Flywheel 1978, DYAD Drive System Series Twin Disc Clutch Kit by Centerforce®. Includes: Pressure Plate, Floater, Alignment Tool, Bolts, Discs, Pilot Bearing,...
      ARP hardware for unparalleled fastener strength and durabilityCentrifugal assisted pressure plate, tuned for Diesel engines
      $1,624.30 - $1,624.95
    • (0 reviews)
      # 73967201
      GMC Suburban 1978, Dual Friction Clutch Disc by Centerforce®. Push Type Clutch. Rear Main Seal Style: 2-Piece. The Centerforce Dual Friction Clutch Series is a performance matched pressure plate and disc combination featuring the...
      Patented centrifugal weight designPatented Dual Friction design
      $156.95 - $229.95
    • (0 reviews)
      # 118712037
      GMC Suburban THM400 Transmission 1978, SuperCase® Lightweight Transmission Case by ATI Performance®. With Sensor Ports. The SuperCase is an SFI certified transmission case for Powerglide and Turbo 400 transmissions. The case,...
      Heavy-duty 356-T6 cast aluminum case meeting SFI 4.1 specs with no internal or ternal shield neededMade in the USA and machined in-house at ATI using only two fixturing set-ups to provide optimum accuracy
      $1,876.27 - $2,156.52
    • (0 reviews)
      # 568024927
      GMC Suburban THM400 Transmission 1978, SuperCase® Tailhousing by ATI Performance®. With Roller Bearing. The SuperCase is an SFI certified transmission case for Powerglide and Turbo 400 transmissions. The case, bellhousing, and...
      Heavy-duty 356-T6 cast aluminum case meeting SFI 4.1 specs with no internal or ternal shield neededMade in the USA and machined in-house at ATI using only two fixturing set-ups to provide optimum accuracy
      $227.49 - $264.03
    • (0 reviews)
      # 568101721
      GMC Suburban THM400 Transmission 1978, SuperCase® Transmission Case by ATI Performance®. The SuperCase is an SFI certified transmission case for Powerglide and Turbo 400 transmissions. The case, bellhousing, and tailhousing are cast...
      Heavy-duty 356-T6 cast aluminum case meeting SFI 4.1 specs with no internal or ternal shield neededMade in the USA and machined in-house at ATI using only two fixturing set-ups to provide optimum accuracy
      $1,736.15 - $1,825.83
    • (0 reviews)
      # 492642354
      GMC Suburban Automatic Transmission 1978, Saturday Night Special Torque Converter by TCI®. Non Lock-Up. The popular Saturday Night Special® Torque Converter delivers premium performance at a reasonable cost. A great choice for show...
      400-500 RPM increase in stall over stockQuicker acceleration and improved low end power to run more smoothly
      $274.37 - $358.21
    • (0 reviews)
      # 1093387279
      GMC Suburban 1978, Transmission Oil Pan by B&M®. Depth: Deep. Add fluid capacity to your transmission. Extra fluid means more cooling, and more cooling means better efficiency and performance. Add life to your transmission with a B&M...
      Extra oil capacity – more coolingNo modifications to dipstick needed
      $59.25 - $173.28
    • (0 reviews)
      # 87540940
      GMC Suburban 1978, Pro Super Overhaul Kit by TCI®.
      High quality at an affordable priceExpertly made from premium materials
      $275.80 - $288.96
    • (0 reviews)
      # mpn1655908
      GMC Suburban Automatic Transmission 1978, QuickSilver™ Automatic Shifter by B&M®. Finish: Black/Chrome. You want style and stout performance wrapped up in a classic package? The B&M QuickSilver shifter is your answer! This...
      Cable operated for quick installation and accurate shiftingCan be used with a reverse pattern valve body
      $307.36
    • (0 reviews)
      # mpn358591626
      GMC Suburban Automatic Transmission 1978, Non-Locking Transmission Dipstick by TCI®. Finish: Black. Designed utilizing the latest technology, this product by TCI features premium quality and will perform better than advertised. Perfect...
      High quality at an affordable priceExpertly made from premium materials
      $35.28
    • (0 reviews)
      # mpn358591278
      GMC Suburban THM350 Transmission 1978, PRO-X™ Aluminum Tailhousing by TCI®. With Roller Bearing. New superior tailhousing design provides added support and lubrication for driveshaft and tailshaft in high-speed drag racing...
      High quality at an affordable priceExpertly made from premium materials
      $249.19
    • (0 reviews)
      # mpn3227387556
      GMC C15 Suburban / C25 Suburban / K15 Suburban / K25 Suburban 5.0L / 5.7L Standard Transmission 1978, Street Clutch Disc by ACT®. Disc Outer Diameter: 11". Input Shaft Spline: 1 1/8" x 10 Teeth. Disc Center Style: Sprung. Disc Type:...
      Smooth engagement, quicker shifts, OE to mild gear rattlePremium organic composite friction blended for high heat tolerance, increased burst strength, faster recovery from overheating and less wear of mating surfaces
      $147.00
    • (0 reviews)
      # 73967198
      GMC Suburban 1978, DFX Series Clutch Pressure Plate by Centerforce®. Push Type Clutch. Rear Main Seal Style: 2-Piece. The Centerforce DFX® Clutch Series is the competition-proven clutch package for select import and domestic...
      Light pedal effortPatented centrifugal weight system
      $318.71 - $339.68
    • (0 reviews)
      # 724038060
      GMC Suburban Automatic Transmission 1978, MR Series™ Mud Racing Torque Converter by FTI®. 1 Piece. Non Lock-Up. 9.5" Diameter. FTI is the first to engineer a converter designed specifically for the mud race applications of today where...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $681.00
    • (0 reviews)
      # 606052198
      GMC Suburban 1978, Transmission Cooling Pan by Derale Performance®. Derale's Transmission Cooling Pan uses air passing beneath the vehicle and redirects it to help lower transmission oil temperatures. This pan features brazed,...
      Heavy gauge stamped steel constructionTwo stage heat dissipating black finish
      $160.42 - $167.57
    • (2 reviews)
      # 606007580
      GMC Suburban 1978, High Performance Transmission Oil Cooler Kit by Hayden®. Featuring a lightweight aluminum construction, this high performance transmission oil cooler is designed to provide outstanding cooling, as well as complement...
      SAE 45 degree fittings for maximum reliabilityElectrostatically powder coated to prevent corrosion
      $37.65 - $47.10
    • (0 reviews)
      # 844995715
      GMC Suburban THM400 Transmission 1978, Super Hydra 400™ Transmission Case by Reid Racing®. The Turbo 400 is the favored 3-speed transmission today for high horsepower applications because of its light weight, minimal drag, and its...
      Full 360° lugsImproved billet pressure plate
      $1,575.46 - $1,680.56
    • (0 reviews)
      # mpn2741037396
      GMC Suburban 5.0L 4-Speed 1978, Manual Transmission Case by Richmond®. Designed utilizing the latest technology, this product by Richmond features premium quality and will perform better than advertised. Perfect for your vehicle and...
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $537.89
    • (0 reviews)
      # 73967190
      GMC Suburban 1978, DFX Series Clutch Disc by Centerforce®. Push Type Clutch. Rear Main Seal Style: 2-Piece. Centerforce brings together high-quality friction materials and patented processes to give you top-of-the-line discs....
      Light pedal effortPatented centrifugal weight system
      $262.95 - $278.20
    • (0 reviews)
      # 492688675
      GMC Suburban Automatic Transmission 1978, Breakaway Torque Converter by TCI®. Non Lock-Up. The first step into serious high performance, the Breakaway® is a great torque converter for moderately modified street machines and weekend...
      1,000+ RPM increase in stall over stockHarder launches and quicker acceleration
      $358.01 - $417.73
    • (0 reviews)
      # mpn1884186
      GMC C15 Suburban / C25 Suburban / K15 Suburban / K25 Suburban Standard Transmission with Muncie Transmission 1978, MasterShift™ Manual Shifter by Hurst Shifters®. 3-Speed. Does not Include: installation kit. Knob Type: White Knob....
      Advanced Gear Shift MechanismChrome Stick with White Knob
      $242.98
    • (0 reviews)
      # 73967166
      GMC Suburban 1978, Light Metal Series Clutch Disc by Centerforce®. Push Type Clutch. Rear Main Seal Style: 2-Piece. The Centerforce® LMC Clutch Series is a specifically designed low inertia performance clutch that dramatically reduces...
      Lightweight aircraft grade aluminumReplaceable friction surface
      $174.98 - $184.18
    • (0 reviews)
      # 257278838
      GMC C15 Suburban / C25 Suburban / K15 Suburban / K25 Suburban 5.0L / 5.7L Standard Transmission 1978, Race Clutch Disc by ACT®. Disc Outer Diameter: 11". Input Shaft Spline: 1 1/8" x 10 Teeth. Disc Type: 6-Pad. This product is a rigid...
      Aggressive engagement, quickest shifts, increased gear rattlePremium ceramic friction materials provide moderate wear rates and high heat tolerance, rigid design may increase spline wear
      $125.00 - $173.00
    • (0 reviews)
      # mpn358732538
      GMC Suburban Standard Transmission 1978, 900/300 Series Powergrip Clutch Disc by RAM Clutches®. Disc Outer Diameter: 11". Input Shaft Spline: 1 1/8" x 26 Teeth. Disc Center Style: Sprung. Disc Type: Full-Circle. RAM 900 Series discs are...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $299.59
    • (0 reviews)
      # 1087154437
      GMC C15 Suburban / C25 Suburban / K15 Suburban / K25 Suburban 5.0L / 5.7L Standard Transmission without Factory Flywheel 1978, XACT™ Streetlite Flywheel by ACT®. This product is a Streetlite flywheel, which is considerably lighter...
      Noticeably improved engine response and acceleration, OE to mild gear rattleHeat-treated forging for strength and toughness, induction-hardened ring gears for maximum life
      $281.00 - $304.00
    • (0 reviews)
      # 73967149
      GMC Suburban 1978, I Series Clutch Kit by Centerforce®. Disc Outer Diameter: 11". Rear Main Seal Style: 2-Piece. The Centerforce® I Clutch Series is designed as a high-quality entry-level performance clutch for those in need of a...
      Patented centrifugal weight design (where applicable)High quality friction material
      $355.95 - $360.95
    • (0 reviews)
      # 1086564672
      GMC Suburban THM350 Transmission 1978, Street Rodder™ Automatic Transmission Assembly by TCI®. The economical TCI® Street Rodder™ is ideal for vehicles that are powered by engines producing 350 to 450 horsepower, depending on the...
      Perfect for daily drivers and mild street rodsValve Body Improver Kit creates a more firm, yet not too harsh shift in the vehicle and remains fully automatic
      $972.64 - $1,129.10
    • (0 reviews)
      # 1116518695
      GMC Suburban Automatic Transmission 1978, MegaShifter™ Automatic Shifter by B&M®. You can have B&M shifter performance with the Console MegaShifter. This shifter features full ratchet action performance, a lighted gear position...
      Cable operated for quick installation and accurate shiftingReverse lockout feature meets NHRA and IHRA requirements
      $338.18 - $340.06
    • (0 reviews)
      # 606052541
      GMC Suburban 1978, Rapid-Cool™ Transmission Oil Cooler Kit by Hayden®. This premium transmission oil cooler features a unique plate and fin design, which is 33% more efficient than a comparable tube and fin design. Thanks to its...
      Compatible with OEM cooler systemsMade with the highest quality materials
      $40.14 - $52.34
    • (0 reviews)
      # 1093336243
      GMC Suburban 1978, Rapid-Cool™ Transmission Oil Cooler with Thermal Bypass by Hayden®. This premium transmission oil cooler features a unique plate and fin design, which is 33% more efficient than a comparable tube and fin design....
      Compatible with OEM cooler systemsUnique plate and fin design
      $56.99 - $69.37
    • (0 reviews)
      # mpn1646010
      GMC Suburban Automatic Transmission 1978, Pro Ratchet™ Automatic Shifter by B&M®. This is the ultimate race shifter. If you're looking for a stout shifter – designed, developed, and refined by the company that invented race shifters...
      Quick And Easy To OperateReverse Lockout Meets NHRA And IHRA Requirements
      $303.07
    • (0 reviews)
      # mpn358591358
      GMC Suburban Automatic Transmission 1978, Drag Race Torque Converter by TCI®. Diameter: 10". Torque Converter Bolt Pattern: Small. TCI® 9", 10" and 11" Drag Race Torque Converters can be run in applications with up to 750 horsepower...
      Furnace-brazed and reinforced fins increase durabilityNeedle bearings reduce drag & increase thrust capacity
      $689.13
    • (0 reviews)
      # 606000365
      GMC Suburban 1978, Mechanical Throwout Bearing by RAM Clutches®. The bearing is constructed of highest quality bearing for years of reliable service and installation is simple and quick. Ram also offers this bearing for circle track...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $34.36 - $91.27
    • (0 reviews)
      # mpn4507534413
      GMC Suburban Standard Transmission 1978, Street 450 Clutch Kit by Hays®. Includes: Pressure Plate, Clutch Disc, Throwout Bearing, Alignment Tool, Instructions. Does not Include: Pilot Bushing. Disc Outer Diameter: 12". Input Shaft...
      Great drivability for power levels up to 450 horsepowerSmooth, chatter-free operation using top quality organic composite friction surface material
      $229.95
    • (0 reviews)
      # 257278860
      GMC Suburban 1978, Aluminum Flywheel by Centerforce®. Flywheel Tooth Number: 168. Product Weight: 15.6 lbs. Size: 14.096". Rear Main Seal Style: 2-Piece. 3, 2 Clutch Bolt Pattern. Aluminum flywheels are manufactured from aircraft-grade...
      Aircraft grade billet aluminumMechanically retained starter ring gear
      $629.41
    • (0 reviews)
      # 73967177
      GMC Suburban 1978, Steel Flywheel by Centerforce®. Rear Main Seal Style: 2-Piece. Steel flywheels are manufactured from high quality billet steel and match closely to the original equipment flywheel weight. Centerforce steel flywheels...
      High Quality Billet SteelCAD/CAM designed and CNC machined
      $423.97 - $451.44
    • (0 reviews)
      # mpn1655912
      GMC Suburban Automatic Transmission 1978, Unimatic™ Automatic Shifter by B&M®. Want to turn your column shifter into a floor shifter and still retain that performance ‘flavor?’ The Unimatic shifter is just the ticket! It looks...
      Ideal as a column shifter replacementCable-operated design makes for easy installation
      $182.19
    • (0 reviews)
      # 492700292
      GMC Suburban Automatic Transmission 1978, Flexplate by Hays®. Material: Billet Steel. Hays heavy-duty Flexplates for high performance and competition engines are constructed of a thicker than stock steel plate, enabling them to...
      Designed to withstand up to 1,500 lbs. ft of torqueOne-piece billet steel design with specialized ring gear heat treatment and thicker than stock centerplate
      $89.95 - $99.95
    • (0 reviews)
      # 492652617
      GMC Suburban Automatic Transmission 1978, Super StreetFighter™ Torque Converter by TCI®. Non Lock-Up. This line of performance converters was developed to work with many GM, Ford and Chrysler transmissions. They offer many advantages...
      2,000+ RPM stall speed over stockHigher RPM launches and lower ETs
      $485.47 - $572.58
    • (0 reviews)
      # mpn4488055577
      GMC Suburban THM400 Transmission 1978, Deep Aluminum Pan Kit by FTI®. Without Hardware. FTI Offers a wide variety of TH400 Parts including racing transmisison pumps, valve bodies, gear sets and deep transmission pans.
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $84.99
    • (0 reviews)
      # 148970036
      GMC Suburban 1978, Chrome-Plated Automatic Transmission Pan by TCI®. Depth: Stock. Material: Steel. Finish: Chrome. These stock-depth TCI® replacement pans can spice up the undercarriage of any vehicle. The included drain plug makes...
      Stock depth is easy to installIncludes drain plugs
      $65.08 - $65.27
    • (0 reviews)
      # 94095113
      GMC Suburban Automatic Transmission 1978, Flexplate by B&M®. Teeth Quantity: 168. B&M’s Flexplates are designed to handle high levels of torque in both street and racing applications. B&M’s SFI approved plates, featuring .150”...
      Quality flexplates for both street (non-SFI) & racing (SFI) applicationsSFI spec 29.1 Approved flexplates are legal for applicable nhra and ihra classes
      $93.76 - $102.29
    • (0 reviews)
      # 73967170
      GMC Suburban 1978, Light Metal Series Clutch Pressure Plate by Centerforce®. Push Type Clutch. Rear Main Seal Style: 2-Piece. The Centerforce® LMC Clutch Series is a specifically designed low inertia performance clutch that...
      Lightweight aircraft grade aluminumReplaceable friction surface
      $681.00 - $724.09
    • (0 reviews)
      # 122090707
      GMC Suburban Standard Transmission 1978, 300 Series Clutch Disc by RAM Clutches®. Disc Outer Diameter: 11". Disc Center Style: Sprung. Each disc features a high strength eight spring hub assembly utilizing the patented Poly-coil...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $211.54
    • (0 reviews)
      # 1087049476
      GMC Suburban Standard Transmission 1978, 300 Series Race Clutch Disc by RAM Clutches®. Disc Outer Diameter: 11". Input Shaft Spline: 1 1/8" x 10 Teeth. Disc Center Style: Sprung. Disc Type: Full-Circle. Each disc features a high...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $211.54
    • (0 reviews)
      # 73967194
      GMC Suburban 1978, DFX Series Clutch Kit by Centerforce®. Push Type Clutch. Includes: Pressure Plate, Alignment Tool, Disc. Does not Include: Flywheel. Rear Main Seal Style: 2-Piece. The Centerforce DFX® Clutch Series is the...
      Added DurabilityLight Pedal Effort
      $515.95 - $537.95
    • (0 reviews)
      # 492664241
      GMC Suburban 1978, Valve Body Performance Improvement Kit by TCI®. Non Lock-Up. This value priced kit allows you to upgrade your transmission for added performance in street, off-road or towing applications. The Valve Body Performance...
      High quality at an affordable priceExpertly made from premium materials
      $60.46 - $75.19
    • (0 reviews)
      # 87541392
      GMC Suburban Automatic Transmission 1978, Forged Flexplate by TCI®. Designed utilizing the latest technology, this product by TCI features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle,...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $104.92 - $119.71




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    1978 GMC Suburban Performance Transmissions Reviews

    Average rating:  5  5 - 2 reviews
    5 of 5
    Lucas Oil
    Great product easy to install low price.
    APosted by Arnold Ray (Pembroke, GA) / August 19, 2017
    2007 Chevy Malibu
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