Coming Soon: 4L65RR Manumatic System

[Steve Chryssos]

Installing this week. The 4L65-RR consists of the following:
-Bowler Transmissions 4l65E rated to support 550 Ft-Lbs of torque
-Pro Torque MuscleDrive 9.5" torque converter
-Compushift Transmission Controller with LCD Display
-Twist Machine Paddle Shifter

Great strides have been made in bringing manumatic technology to the pro-touring community. We can input shifts manually from the steering wheel, calibrate transmission function, and control engine/transmission coupling electronically. It all works extremely well, but we want more:
1) Just how fast can the 4L series of transmission be made to shift?
2) Can shift predictability be improved?
3) Can enhanced engine braking be employed to benefit vehicle dynamics in road racing and auto-X environments?
4) Can all of this be achieved without sacrificing reliability?

While we (Twist Machine) were working from the outside in, Bowler Transmissions has been working from the inside out--by custom blueprinting and calibrating valve bodies, pumps and working with internal clearances. Just as with custom race engines, blueprinting and calibration are as important as parts selection. And just as with engines, mass produced units might be very good, but nothing compares to a precisely hand built and tested product. For those who insist on the best possible multi-purpose transmission for a pro-touring application, the sum total is worth more than the parts.



We're excited about testing the system out at Year One. Upon our return, we'll start offering the above listed items as complete, fully integrated packages called the 4L65-SR (450FtLbs) and 4L65-RR (550FtLbs). 4L80E packages will also be available up to 800FtLbs.