Kit Components

A truly complete conversion combining the Keisler PerfectFit^TM transmission  with all of the correct matched parts that have been carefully selected and tested by Keisler for guaranteed quality and performance.

Drivetrain component selection and installation instructions and support is critical to get the job done right. Rest assured, buying from Keisler - the leader in overdrive transmission systems - is the first step in the best driving improvement you will make to your 55-57 Chevy.

1.  TRANSMISSION - NEW TREMEC TKO-600 (600 HP/600 LB-FT), customized by Keisler with a shift position that allows full movement of your bench seat.

• Custom short-throw internal shifter mechanism designed to provide better-than-stock shifting.
• Muncie / Borg-Warner GM bolt pattern and input shaft configuration for direct bolt-in installation.
• Gear Ratios: 2.87 1st, 1.89 2nd, 1.28 3rd, 1.00 4th, .82 5th; 2.56 reverse.
• Low RPM Cruising - 18% drop in engine RPM in 5th gear (check out our Speed Analyzer).
• Precision Assembled, TRIPLE Quality Checked - assembled at Keisler by our trained technicians; 100% inspected for function, leak and visual appearance (check us out).
• Nation-Wide Parts & Service - Parts in-stock; service in-house.

2.  PILOT BEARING - Needle Roller Bearing for long life and high capacity.

3.  ISOLATOR - Heavy-duty rubber isolator. Polyurethane upgrade available.

4.  BACK-UP LIGHT WIRING HARNESS - Easy coupling to factory wiring.

5.  NEUTRAL SAFETY START SWITCH - Can be wired into your starter circuit if desired.

6.  SPEEDOMETER CABLE & DRIVEN GEAR - Mechanical speedometer cable and correct driven gear PLUS integrated 2-wire electronic output included. Optional electronic wiring harness also available (for use with electronic speedometers or EFI).

7.  DRIVESHAFT - Lightweight high strength steel, automatic welded and computer dynamic balanced with premium solid sealed U-joints, painted satin black, certified and serialized. Built in-house on Hines driveshaft manufacturing cell for the ultimate in quality and craftsmanship!

8.  SLIP YOKE - Heavy duty Spicer slip yoke.

9.  INSTALLATION HARDWARE KIT - High strength Grade 5 and 8 fasteners, properly sorted, bagged and labeled for easy reference.

10.  TUNNEL SHEETMETAL - Replacement sheetmetal pre-cut to the correct size and shape is provided.

11.  INSTALLATION MANUAL - Highly illustrated step-by-step instruction manual.

12.  6 MONTH WARRANTY - 2 years to activate (in case you are restoring a car)! Extended warranty available at extra cost. Best Customer Support in the Industry.

100% Customer Satisfaction Guaranteed

• The best Customer and Tech Support in the industry
• Lifetime Tech Support from our premier experienced staff

Overview-Ordering

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The Keisler PerfectFit™ System is the easiest and most complete way to put a high strength, modern overdrive Tremec TKO 5-speed transmission in your 1955-1957 Chevy Bel Air. Our Keisler Custom Engineered PerfectShift™ Tailhousings and Shift Mechanisms provide the smoothest operation, the shortest throws and the optimal fit for your 1955-57 Chevy with no modifications to the original bench or custom bucket seats. Enjoy a PerfectFit transmission with low RPM cruising, and great fuel economy today.

Unsurpassed quality of design, components and build are included with every Keisler PerfectFit™ System.  Enjoy low RPM cruising and fun shifting, while getting the benefits of reduced engine wear and tear.  Join thousands of customers that say "The Keisler PerfectFit™ Transmission System is the Best Upgrade for your 1955-57 Chevy."

Recommended Accessories (Have questions? Please call 865-609-8187 for assistance): 10.5 x 1-1/8" 26 Spline High Performance Clutch Disk Copper-Organic 10.5-inch clutch disc, GM and Mopar TKO 26-spline, for use with 10.5-inch pressure plates rated up to 600ft-lb. Features fully sprung hub, smooth uptake, high torque capacity and long life. Item Details Price: Call for Pricing ORDER BY PHONE: Call 1-865-609-8187 11 x 1-18" 26 Spline High Performance Clutch Disk Copper-Organic 11-inch clutch disc, GM/TKO 26-spline, for use with 11-inch pressure plates rated up to 650ft-lb. Features fully sprung hub, smooth uptake, high torque capacity and long life. Item Details Price: Call for Pricing ORDER BY PHONE: Call 1-865-609-8187 350 FT-LB High Perf 10.5" Borg&Beck/SACHS Clutch Kit 5-piece High Performance clutch kit (10.5-inch) for GM & Mopar applications with 26-spline input shaft. 350FT-LB rated, Borg&Beck/SACHS. Item Details Price: Call for Pricing ORDER BY PHONE: Call 1-865-609-8187 400 LB-FT High Perf 11" Borg&Beck/SACHS Clutch Kit 5-piece High Performance clutch kit (11-inch) for GM & Mopar applications with 26-spline input shaft. 450HP/400 LB-FT rated, Borg&Beck/SACHS. Item Details Price: $219.95 ORDER BY PHONE: Call 1-865-609-8187 450 FT-LB High Perf 10.75" Borg&Beck/SACHS Clutch Kit 5-piece High Performance clutch kit (10.75-inch) for GM & Mopar applications with 26-spline input shaft. 450FT-LB rated, Borg&Beck/SACHS. Item Details Price: $229.95 ORDER BY PHONE: Call 1-865-609-8187 650 FT-LB Perf 11" Borg&Beck/SACHS Clutch Kit 5-piece High Performance clutch kit (11-inch) for GM & Mopar applications with 26-spline input shaft. 650FT-LB rated, Borg&Beck/SACHS. Item Details Price: $299.95 ORDER BY PHONE: Call 1-865-609-8187 650 FT-LB Perf. 11" Borg&Beck/SACHS Clutch Only 4-piece High Performance clutch kit (11-inch) for GM & Mopar applications with 26-spline input shaft and Keisler's hydraulic clutch actuator. 650FT-LB rated, Borg&Beck/SACHS. Item Details Price: $269.95 ORDER BY PHONE: Call 1-865-609-8187 Chevrolet 11-inch Inspection Cover (Steel) Genuine GM stamped steel, e-coat painted inspection cover. Fits most Chevrolet 11-inch bellhousings up to 1974. Item Details Price: $29.95 ORDER BY PHONE: Call 1-865-609-8187 Chevrolet Billet Aluminum Flywheel w/Steel Insert High Performance Billet Aluminum Flywheel for Chevrolet engines, with replaceable steel insert. 153- or 168-tooth ring gear, zero balance or counterbalanced, 1-piece or 2-piece rear main seal. Item Details Price: $429.95 ORDER BY PHONE: Call 1-865-609-8187 Chevrolet Billet Steel Flywheel High Performance Billet Steel Flywheel for Chevrolet engines. 153- or 168-tooth ring gear, zero balance or counterbalanced, 1 piece or 2 piece rear main seal. Item Details Price: $269.95 ORDER BY PHONE: Call 1-865-609-8187 Chevrolet Super Duty 11" Bellhousing Kit Keisler Engineering developed this BRAND NEW bellhousing for your Chevrolet V8 engine. It is a reproduction of the famous "621" Chevy 11-inch bellhousing! Comes with inspection cover and hardware. Item Details Price: $249.95 ORDER BY PHONE: Call 1-865-609-8187 Chevrolet Super Duty 11" Bellhousing Only Keisler Engineering developed this BRAND NEW bellhousing for your Chevrolet V8 engine. It is a reproduction of the famous "621" Chevy 11-inch bellhousing! Item Details Price: $239.95 ORDER BY PHONE: Call 1-865-609-8187 Chevrolet Super Duty 11" Bellhousing Only (late model LS) Keisler Engineering developed this BRAND NEW bellhousing for your Chevrolet late model LS V8 engine. It is a reproduction of the famous "621" Chevy 11-inch bellhousing! Item Details Price: $239.95 ORDER BY PHONE: Call 1-865-609-8187 Clutch Alignment Tool - 26 spline GM Clutch Alignment Tool - GM 1-1/8" x 26 spline pattern. Item Details Price: $6.95 ORDER BY PHONE: Call 1-865-609-8187 Clutch Pedal Kit for '55-'57 Bel Air: Clutch Pedal Kit for Chevrolet 1955-1957 Bel Air. Item Details Price: $149.95 ORDER BY PHONE: Call 1-865-609-8187 Flywheel Bolt Pack for GM, Mopar, & Ford - 6pc 7/16" Package of (6) 7/16-inch flywheel bolts for use with Chevrolet, Buick, Olds, Mopar, and Ford 6-bolt flywheels. Item Details Price: $15.95 ORDER BY PHONE: Call 1-865-609-8187 GM & Mopar Pressure Plate Bolt Pack High performance special purpose bolts make all the difference. Fasteners feature hardened top quality materials, proper head and shoulder sizes and lengths. Fits GM and Mopar pressure plates. Item Details Price: $15.95 ORDER BY PHONE: Call 1-865-609-8187 Hurst Shift Handle - Street Rod & Kit Car Genuine Hurst chromed steel shift handle with Hurst logo for Street Rod & Kit Car applications. Reversible: may be mounted in either direction. Popular choice for Cobra kit cars! Shift knob sold separately. Item Details Price: $89.95 ORDER BY PHONE: Call 1-865-609-8187 Hurst Shift Handle for Bench Seat Cars Genuine Hurst chromed steel shift handle with Hurst logo for cars with bench seats. Shift knob sold separately. Item Details Price: $89.95 ORDER BY PHONE: Call 1-865-609-8187 Hurst Shift Handle for Bucket Seat Cars Genuine Hurst chromed steel shift handle for most GM and Ford cars with bucket seats (excluding Corvette and 1970-1981 Camaro). Best fit, closest to original. Shift knob sold separately. Made in USA. Item Details Price: $89.95 ORDER BY PHONE: Call 1-865-609-8187 Hurst Shift Handle Straight Chrome Stick Genuine Hurst shift handle with Hurst logo, straight chromed steel stick. 7.5" tall. Shift knob sold separately. Item Details Price: $89.95 ORDER BY PHONE: Call 1-865-609-8187 Hydraulic Clutch Actuator Kit for 1955-57 Chevy Bel Air Convert your TKO-equipped Tri-Five to a hydraulic clutch actuation system! Complete system includes: Model-specific master cylinder, concentric slave cylinder, reservoir assembly, and Keisler's exclusive bleedable braided steel line. Item Details Price: $649.95 ORDER BY PHONE: Call 1-865-609-8187 Keisler Logo Shifter Ball, Black Hot New Black Shifter Ball proudly displays the Keisler logo. Item Details Price: $29.95 ORDER BY PHONE: Call 1-865-609-8187 Lakewood SFI Steel Bellhousing for Chevrolet Lakewood SFI steel safety bellhousing for Chevrolet small block and big block applications. Includes engine protection plate and all necessary hardware. Item Details Price: $369.95 ORDER BY PHONE: Call 1-865-609-8187 Polyurethane Transmission Mount GM TKO, A41 All High-Performance Polyurethane transmission mount for GM TKO and Automatic Overdrive, and Mopar Automatic Overdrive. Item Details Price: $49.95 ORDER BY PHONE: Call 1-865-609-8187 QuickTime Chevrolet Bellhousing for Hydraulic Release Brg. Quick Time lightweight steel bellhousing for Chevrolet V8 engines with hydraulic release bearings. For 153 tooth flywheel, fits most GM four speeds as well as Keisler's TKO five speed. Includes engine protection plate and all necessary hardware. Item Details Price: $383.60 ORDER BY PHONE: Call 1-865-609-8187 QuickTime Chevrolet LS Steel Bellhousing for Muncie/TKO Quick Time lightweight steel bellhousing adapts Chevrolet LS series V8 engines to GM Muncie, Saginaw and B-W T10 four speeds as well as Keisler's TKO five speed. For 168 tooth flywheel. Includes engine protection plate and all necessary hardware. Item Details Price: $499.86 ORDER BY PHONE: Call 1-865-609-8187 QuickTime Chevrolet SFI Steel Bellhousing for 168T Flywheel Quick Time SFI lightweight steel bellhousing for Chevrolet small block and big block V8 engines. For 168 tooth flywheel, fits most GM four speeds as well as Keisler's TKO five speed. Includes engine protection plate and all necessary hardware. Item Details Price: $483.40 ORDER BY PHONE: Call 1-865-609-8187 QuickTime Chevrolet Steel Bellhousing for 153T Flywheel Quick Time lightweight steel bellhousing for Chevrolet V8 and 90 degree V6 engines. For 153 tooth flywheel, fits most GM four speeds as well as Keisler's TKO five speed. Includes engine protection plate and all necessary hardware. Item Details Price: $401.25 ORDER BY PHONE: Call 1-865-609-8187 TKO Shift Handle for Bucket Seat Cars Keisler custom chromed steel shift handle featuring TKO logo for most GM bucket seat cars and classic Mustang (excluding Corvette and 1970-1981 Camaro/Firebird). Best fit, closest to original. Made in USA. Shift ball sold separately. Item Details Price: $89.95 ORDER BY PHONE: Call 1-865-609-8187

Speed Analyzer

Testimonials

Recent Testimonials...

Pat Johansson - '57 Chevy

Thanks Jeff and Keisler,
From a happy customer in Sweden...I went for a weekend trip to Norway, about a 12 hour trip to break in the gear box. Due to the 5-gear this was possible (big block and 4.10 rear axle) and something that was a big bonus, driving down the mountains, I could downshift to a lower gear and not overheat the rear drum brakes.  It's so fun to drive this stickshift car and maybe I take it to the track in late August and see if I can improve the quarter mile run. It feels like 700hp when I drive the car!!  The engine makes about 560-580 after upgrade.
Best regards,
Patrik