Home > Transmissions
Choose a sub category:
4L60E Transmissions

ATK Performance Transmissions

Need a transmission that is powerful enough to support your new High Performance Engine? Look no further than the below selection of our HP Transmissions. Give us a call and we can recommend the perfect fit for your ride!

All of our transmissions are built for your application. In order to best serve you we will need the following information: year, make, model, gear ratio, tire size, vehicle weight and engine/cam specs. By getting this information we can calibrate the transmission to shift where it should and make sure your speedometer is accurate.
Sort By:
Page of 2
ATK HP400HD Heavy Duty TH400 Transmission
ATK HP400HD Heavy Duty TH400 Transmission
Our Price (USD): $1,445.00

Our heavy duty 400 features heavy duty clutches and bands, valve body and lube modifications to provide a durable transmission ideal for light trucks and passenger cars. Comes with our heavy duty 1500-1700 stall converter. This unit is rated to 400HP/450 lbs of TQ and is available in both Chevy and Buick, Olds, Pontiac and Cadillac applications. more info
Heavy Duty TH-350 Transmission
ATK HP350HD Heavy Duty TH-350 Transmission
Our Price (USD): $1,450.00

Our heavy duty 350 is a perfect replacement trans for those seeking a stronger and better performing trans but don't need nor want a street/strip type trans. This is a great transmission for engine applications up to 325hp. Trans is built with heavy duty clutch packs, shift improvement, and durability modifications. Includes our heavy duty torque converter with 1600-1800 stall speed. A lot of trans for a little money.
more info
ATK 7204-HP Heavy Duty 4L60E RWD Transmission
ATK 7204-HP Heavy Duty 4L60E RWD Transmission
Our Price (USD): $1,499.00

These 4L60E transmissions are meant to be retrofitted into a hot rod application. Our heavy duty 4L60E features heavy duty clutches and bands, valve body and lube modifications to provide a durable transmission ideal for light trucks and passenger cars. This unit is rated to 450HP.

THIS TRANSMISSION DOES NOT COME WITH A TORQUE CONVERTER OR TRANSMISSION CONTROLLER. CUSTOMER MUST SUPPLY THEIR OWN.

  • SBC/BBC bell housing pattern
  • 2wd application - 4-1/2 splines
  • 2pc case - full bottom bell housing with 2 round holes
  • Grey connector with 13 pins
These transmissions are BUILT IN THE USA!
more info
ATK 7205-HP Heavy Duty 4L60E 4x4 Transmission
ATK 7205-HP Heavy Duty 4L60E 4x4 Transmission
Our Price (USD): $1,499.00

These 4L60E transmissions are meant to be retrofitted into a hot rod application. Our heavy duty 4L60E features heavy duty clutches and bands, valve body and lube modifications to provide a durable transmission ideal for light trucks and passenger cars. This unit is rated to 450HP.

THIS TRANSMISSION DOES NOT COME WITH A TORQUE CONVERTER OR TRANSMISSION CONTROLLER. CUSTOMER MUST SUPPLY THEIR OWN.

  • SBC/BBC bell housing pattern
  • 4wd application
  • Removable bell housing with bolt hole at 12 o'clock position
  • Grey connector with 13 pins
These transmissions are BUILT IN THE USA!
more info
ATK HP400SS Street/Strip TH400 Transmission
ATK HP400SS Street/Strip TH400 Transmission
Our Price (USD): $1,590.00

Our heavy duty 400 with higher capacity clutch packs, Kevlar band, high capacity 34 element sprag race and semi-automatic valve body, which allows you to select gears manually, or leave it in drive for full automatic shifting. This trans includes our 2000-2200 stall converter and is a great choice for the weekend warrior with up to 600 horsepower and a heavy foot. more info
ATK 1299-HP Heavy Duty 4L60E RWD Transmission
ATK 1299-HP Heavy Duty 4L60E RWD Transmission
Our Price (USD): $1,599.00

These 4L60E transmissions are meant to be retrofitted into a hot rod application. Our heavy duty 4L60E features heavy duty clutches and bands, valve body and lube modifications to provide a durable transmission ideal for light trucks and passenger cars. This unit is rated to 450HP.

THIS TRANSMISSION DOES NOT COME WITH A TORQUE CONVERTER OR TRANSMISSION CONTROLLER. CUSTOMER MUST SUPPLY THEIR OWN.

  • LS (4.8, 5.3, 6.0, etc) bell housing pattern
  • RWD application
  • Removable bell housing
These transmissions are BUILT IN THE USA!
more info
ATK 1297-HP Heavy Duty 4L60E 4x4 Transmission
ATK 1297-HP Heavy Duty 4L60E 4x4 Transmission
Our Price (USD): $1,599.00

These 4L60E transmissions are meant to be retrofitted into a hot rod application. Our heavy duty 4L60E features heavy duty clutches and bands, valve body and lube modifications to provide a durable transmission ideal for light trucks and passenger cars. This unit is rated to 450HP.

THIS TRANSMISSION DOES NOT COME WITH A TORQUE CONVERTER OR TRANSMISSION CONTROLLER. CUSTOMER MUST SUPPLY THEIR OWN.

  • LS (4.8, 5.3, 6.0, etc) bell housing pattern
  • 4x4 application
  • Removable bell housing
These transmissions are BUILT IN THE USA!
more info
ATK HP350SS Street/Strip TH350 Transmission
ATK HP350SS Street/Strip TH350 Transmission
Our Price (USD): $1,615.00

Our heavy duty trans with a lot more performance built in, including semi-automatic shifting which allows you to manually upshift or downshift or let the trans shift automatically. This transmission is rated for engines with up to 450hp. The trans also features a special intermediate sprag race and high rpm governor. A great trans for hot rodding around and occasional racing. Includes our 2000-2200 stall converter. more info
ATK HPC6HD Heavy Duty C6 Transmission
ATK HPC6HD Heavy Duty C6 Transmission
Our Price (USD): $1,630.00

This is our Heavy Duty C-6 transmission built for light trucks and passenger cars requiring a stronger than stock transmission for light towing or everyday driving requirements. Clutch pack capacity is increased and valve body is modified for improved shifts and lube transfer. Transmission includes our Torque Max torque converter in stall speeds up to 1800 rpm. Available for most Ford engines and applications.

4x4 option is an additional $250.00 / Small block option is an additional $225.00
more info
ATK HPC6SS Street/Strip C6 Transmission
ATK HPC6SS Street/Strip C6 Transmission
Our Price (USD): $1,765.00

This is our Street/Strip version of the C-6 built for higher output applications up to 450HP. This trans features improved servo design, modified valve body, increased clutch capacity and lube mods to insure trouble free high performance fun . Includes our Torque Max torque converter in stall speeds up to 2400 rpm. Available for most Ford engines and applications.

4x4 option add $250.00 / Small block option add $225.00
more info