Sure I'll bite I think in a stock car it was tripped by a switch on the accelerator linkage at WOT. That caused the TC to switch to high stall which effectively reduces the gear ratio between the motor and trans. So in the stock car its simply a passing gear or under-drive.
In a non stock car it can be controlled by a manual toggle switch on the dash. When flipped it changes from high stall (2200 RPM) to low stall (1100) RPM. Or flipped back the other way. Stall settings can be custom built for not much money by PAE. One can switch into high stall for a launch and then switch to low stall during first gear. sort of gives you a four speed. If the pitch change is 50% it effectively cuts your gear ratio in half (numerically double). So if you are running 3.08-1 gears you are launching in high stall with 6.16-1. Or if you use the cutlass 2.56 you get great mileage in low stall but can launch with a 5.12-1 effective ratio. Behind a 455 one can turn some really big tires. I am sure there are plenty folks on the list who can tell you much more than I. To me it seems nuts to build a TH400 without SP. Kerry --- John Lee <[EMAIL PROTECTED]> wrote: > > Could I lure you fine people into a discussion of > when a switch pitch > works,
