Tim W
01-05-2020, 09:55 PM
Hi yall this is my very first and I was actually referred over here from the folks at GMT 400 forum.
Let me tell you what i have going on. I have a 1994 chevy 1500 single cab step side. The motor is a professionally built mild vortec 383 stroker with a LT4 hot cam. The truck is fueled by a Holley Sniper EFI, holley Fuel pump, HyperSpark Coil, Ignition, coil, and Distributor. My built 4L60E transmission is still being controlled by my stock PCM since the sniper only controls the EFI.
In case it matters here is my transmission specs.
"High performance pump with high rpm pump rings, Torrington vanes, high output boost valve and pressure regulator assembly, special valve body and servo assembly,alloy accumulator pistons, TCC and AFL valve replacement, steel bonded apply pistons, 29 element dual cage input sprag,Borg warner low tension low sprag assembly, special modified sun gear shell, increased clutch capacity, performance servo, updated electronics, increased operating pressure and lube mods and a host of other modifications. Comes with our Street/Strip torque converter with carbon clutch, furnace brazing, hardened hub, and stall speeds up to 2600 rpm. Rated to 425HP."
In my opinion the stock PCM makes the trans shift sort of "weak" and draws 1st to 2nd out a little longer than I Like. So my question is... Is there a chip out there that will plug into my stock pcm and adjust the shift points and firmness? Im new to all of this and I'm learning as I go.
Thanks
Let me tell you what i have going on. I have a 1994 chevy 1500 single cab step side. The motor is a professionally built mild vortec 383 stroker with a LT4 hot cam. The truck is fueled by a Holley Sniper EFI, holley Fuel pump, HyperSpark Coil, Ignition, coil, and Distributor. My built 4L60E transmission is still being controlled by my stock PCM since the sniper only controls the EFI.
In case it matters here is my transmission specs.
"High performance pump with high rpm pump rings, Torrington vanes, high output boost valve and pressure regulator assembly, special valve body and servo assembly,alloy accumulator pistons, TCC and AFL valve replacement, steel bonded apply pistons, 29 element dual cage input sprag,Borg warner low tension low sprag assembly, special modified sun gear shell, increased clutch capacity, performance servo, updated electronics, increased operating pressure and lube mods and a host of other modifications. Comes with our Street/Strip torque converter with carbon clutch, furnace brazing, hardened hub, and stall speeds up to 2600 rpm. Rated to 425HP."
In my opinion the stock PCM makes the trans shift sort of "weak" and draws 1st to 2nd out a little longer than I Like. So my question is... Is there a chip out there that will plug into my stock pcm and adjust the shift points and firmness? Im new to all of this and I'm learning as I go.
Thanks