NEED 1228291 PROM!! - Third Generation F-Body Message Boards

PneumaticTire · 05-10-2009, 09:10 PM

Need 1228291 prom please! No longer available through gm. This is the "updated" factory prom that fixes some driveability issues, false dtc's, and raises the torque converter lockup speed to 41 mph instead of 20 something. Thanks!!!

t/a350vtpi · 05-10-2009, 10:09 PM

Got one from my 86t/a ws6 305tpi I took out when I dropped in the vortec 350. Worked fine for me. Got to check the number though. Never had any
driveabilities problems and lock-up was good. Let you know tomorrow.
Also got one from hypertech called the thermomaster you might be interested in ? It's for the 305tpi.

PneumaticTire · 05-10-2009, 10:22 PM

Quote:

Originally Posted by t/a350vtpi

Got one from my 86t/a ws6 305tpi I took out when I dropped in the vortec 350. Worked fine for me. Got to check the number though. Never had any
driveabilities problems and lock-up was good. Let you know tomorrow.
Also got one from hypertech called the thermomaster you might be interested in ? It's for the 305tpi.

Please check and get back with me, I am definitely wanting it if it is the correct prom number i am asking for. As far as the thermomaster chip goes, what all do I need to modify to use it? just a 160 t stat?? Does it actually work noticeably? How much for them? Thanks!@!

t/a350vtpi · 05-11-2009, 05:42 PM

You have a PM