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.

[neki67]

Great going Steve.

Will parts be available seperate as well? Would like some enhanced engine braking from the 4L80E.

[Steve1968LS2]

Nice.. press release?

[Steve Chryssos]

Great going Steve.

Will parts be available seperate as well? Would like some enhanced engine braking from the 4L80E.

Some of the parts like valve bodies are available separately. I'm curious to see if the extra engine braking is overbearing. It may slow the car down too much. I'll report back in two weeks.

[Steve Chryssos]

Nice.. press release?

Yup and better, yet: I'm shooting an entire install for you.
/Steve

[hmartin]

Looks AWESOME! Keep us updated.

[neki67]

I'm curious to see if the extra engine braking is overbearing. It may slow the car down too much. I'll report back in two weeks.

OK, sounds great, Steve.

[meenaggie]

Steve, ballpark price for the 4L65-SR and 4L65-RR kits? Looking forward to seeing more info after the Year One event.

[Steve Chryssos]

Steve, ballpark price for the 4L65-SR and 4L65-RR kits? Looking forward to seeing more info after the Year One event.

We''ll have pricing soon. In the meantime, here are the RR transmission specs:

HARD PARTS
-Performance Wide 2-4 Band/New OEM Drum: Used in conjunction, these parts yield maximum surface contact.
-Hardened and Reinforced Input Shaft: Steel sleeve pressed over input shaft for reinforcement.
-Cryogenic Treated Drum
-Machine Coast Clutch Piston for Clearance and Add O-Ring Seal
-Heavy Duty 5 Pinion Front & Rear Planet: with new Sun Gear and new Ring Gear. No junkyard parts.
-SPX "The Beast" Hardened Sun Shell: blueprinted in conjunction with new reverse input drum for matched set. Very important.
-Sonnax Billet 2nd Gear Servo with D-cut O-ring for leak free seal
-Super Hold billet 4th Gear Servo with 30% more apply force. D-cut O-ring for leak free seal.
-Raybestos ZPak 14 element 3-4 Clutch Upgrade for ultimate heat dissipation.
-Borg Warner Low/Rev Sprag 29 element for maximum load capacity
-Torrington Bearing Kit
-Master Kit (gaskets, seals bushings, filter etc.)
-New Inspection Cover
BLUEPRINTED AND CALIBRATED PUMP
-Hand Blueprinted Pump
-Unbreakable High Rev Hardened Pump Rings
-New HP Boost Valve
-New Pump Vanes
BLUEPRINTED AND CALIBRATED VALVEBODY
-Hand Blueprinted Valve Body
-Shift Kit: Custom calibrated to your application.
-New Shift Solenoid
-New EPC Solenoid
-New pwm Solenoid
-New Manifold Pressure Switch
-New Internal Wiring Harness w/New TCC Solenoid
-New Extra Capacity Pan
-New! New! New! Bowler supplies an un-equalled number of new parts such as wiring harnesses, connectors, sensors, etc.