BurtReynolds

iTrader: (1)

what is it.Is it when you punch a 3000 stall it flashes and once you get at higher rpms does it shift at like 3900.

JakeY2KZ

iTrader: (9)

Shift extensions are where when the car shifts.....it's the RPM it falls to to start the next gear. The higher the stall the higer the extension.

jmm98LS1

iTrader: (28)

After your car shifts with the stock converter, rpms drop to ~4000...that's your shift extension--~4000rpm. With a big stall you will only drop to 5k rpm give or take (depending on stall size) between shifts, so your shift extension would be 5k rpm. Make sense?

MiaSSmaro98

iTrader: (9)

but only because of a stall it will extend it?or is it because u can raise ur shift points via the ecm

radz282003

iTrader: (1)

I think I was told the higher the stall that higher the shift extension. I don' t think tuning the PCM would help, in that way.

With my 3800, my shift extension is about 5300-5400, so, at WOT, the RPMs don' t drop below these engine speeds.

MiaSSmaro98

iTrader: (9)

so i guees thats why it lowers ur ets at the track

99Hawk262

iTrader: (19)

It lowers your E.T. at the track by allowing you to launch faster. Cutting 2.0-2.2 60' times is common in stock form. Cutting 1.5-1.6 60' times is common with a good TC. For every .1 second you take off your 60' you can double that on the other end. TC's shine best from a dead stop.

JakeY2KZ

iTrader: (9)

Raising shift points has nothing to do with extensions. If you raise your shift points it's still going to fall down to the exact RPM it did before. If you want to raise your extensions, you have to go bigger on your stall.

MiaSSmaro98

iTrader: (9)

thanks guys