Tremec GM TKX 5-Speed to 1949-53 Ford Flathead Engine Conversion

This all-in-one kit is designed to adapt the versatile TREMEC TKX 5-speed transmission to your 1949-53 Ford Flathead engine. Serving up 600 lb-ft of torque capacity, along with excellent shifting performance and extreme durability. This kit includes everything you need for installation*.

• Sold as a complete conversion kit
• TKX 5-speed RWD manual transmissionto 1949-53 Flathead
• .68 overdrive 5th gear for smooth cruising on the highway
• *See note below regarding 1949-53 OEM 3" adapter
• 24.07" Casting length from tranmission front face to tail

Kit Includes:

• TREMEC GM TKX 5-speed RWD manual transmission(91029044)
• GM Manual Transmission to Flathead V8 adapter (91628912)
• Flathead clutch release bearing (91025620)
• Release bearing adapter (91629517)
• Pilot bearing (91629520)
• Flathead 10-1/2" long style clutch pressure plate 910-15635
• Flathead 10-1/2" clutch disc (91015660)
• Flathead clutch release fork (91675150)
• Flathead clutch shaft release pin (91675151)
• Flathead clutch release shaft (91675101)
• Clutch release spring (91675152)
• Flathead steel flywheel (91015629)
• ARP flywheel bolts (1012002802)
• ARP pressure plate bolts (1011502201)

Note: Flywheel provided in this kit is for the 1949-53 Ford Flathead engine application. The 1949-53 engine application will require this kit to utilize the OEM 3" adapter bellhousing (to be provided by the installer - not currently available from Speedway Motors).

The end result is superior shift-ability with smooth shifts at high RPMs through the use of multi-cone synchronizers and hybrid synchronizer rings. At the same time, noise, vibration and harshness (NVH) performance is optimized with a gear layout to best control stress levels, while providing structural stiffness with a ribbed, 3-piece aluminum housing. Durability is further optimized with oversized gear widths, gaskets at all flanges and caged needle bearings in all gear positions.

Whether restoring or upgrading a classic muscle car or a 1930s-era roadster coupe, the new TREMEC TKX 5-speed RWD manual transmission delivers a top-quality drivetrain solution.

• 600 lb.-ft. of torque capacity; capable of engines speeds of 8,000 RPMs with shifts at 7,500 RPMs.
• Designed for multiple applications with three shifter locations.
• Compact, end-loaded design provides clearance in most transmission tunnels without floor modifications.
• Increased case strength with three-piece aluminum housing provides outstanding structural stiffness.
• Gaskets at all flanges simplifies installation and eliminates fluid leaks.
• Superior shift-ability through use of multi-cone synchronizers and hybrid synchronizer rings made of sintered bronze and carbon
• All gears and shafts made from special grade steel (ASTM 4615), providing increased torque carrying capacity.
• Equipped with a high-performance short-throw billet aluminum shifter that isolates road noise, while providing clean, crisp shifts.
• Robust design with internal three-rail shift system and steel shift forks.
• Wide gear width increases gear life and torque capacity.
• Integrated GM transmission mount pattern 
• Gear Ratios
  • 1st - 3.27, 2nd - 1.98, 3rd - 1.34, 4th - 1.00, 5th - 0.72, Rev - 3.00

916-28912 Instructions (PDF) 

Transmission Specs:

• Tremec # TCET18083
• 600 lb.-ft. torque capacity
• Speedo Type - mechanical or electric
• Spline Count - 26 Input, 31 Output
• Gear Ratios - 3.27, 1.98, 1.34, 1.00, .68, Reverse 3.00