Coming Soon: 4L65RR Manumatic System

[Steve Chryssos]

TOTALLY AWESOME! Trans temps held steady with the Redline Oil D4 at 220 even with lap after lap of high rev high speed runs. The engine braking feature is insane. Shift time is very quick despite not being harsh. I'm not quite sure how Bowler pulls that off, but they do. I always assumed that very quick shifts automatically meant harsh shifts. The RR just goes OOMPH! and it's in the next gear.

On Road Atlanta I had the Compushift set to lock up in 2nd, 3rd, and 4th o you have direct drive coupling between engine and trans. I used 2nd and 3rd gear almost exclusively, so I never missed having the additional gears of a manual trans. Road Atlanta is a fast, but very hilly course. So just picture that most of the track can be run in 3rd gear at 1:1 with my 3.70 rear gears. All of the steep inclines occur just after tight turns and heavy braking. So finish your braking in a straight line in 3rd gear, tap down to second, apex, and put the power back on knowing that the car is 100% in 2nd gear for sure. Nail it, climb the hill tap up to 3rd at redline and haul ass back up to redline. Repeat.
On the street, I kept the shifter in 3rd gear. Lock up occurs at 48mph. Again, I don't know what sinister magic Bowler applies to their calibration, but lock up feels like a whole extra gear. And it stays locked up until vehicle speed drops below 28mph. So the car just chugs along in direct drive. Feels sounds and performs just like a manual until you slow down below 28 mph. Then you have all of the smoothness of a Cadillac. No clutch pedal; no jerking. I will drive it like this everywhere. 4th gear will only be used for highway cruising economy.

I am blown away. The MuscleDrive converter was a big step forward. But going back into the trans and optimizing the hard calibration for this exact combination completed the scene. WE DID IT! RR packages will ship with an advanced calibration that can only be supplied when all of the pieces are used together. Trans-Converter-Compushift-Shrifter.



Thanks for looking
/Steve