L21 stock file

[RADustin]

Looking for a L21 454 stock file to compare some stuff.

thanks

[In-Tech]

Year make/model please. I don't have my files named by engine designation, sorry.

[In-Tech]

According to wikipedia it appears those were used in 99-02 Topkick and motorhome. I don't have one, sorry.

[In-Tech]

You got me curious, lol. I want to know now too. The PCM is one of these ACDELCO 21812298 {#19143664} which is pre-p01 style as noted below.

23861

CHEVROLET BUS 1999-2000
CHEVROLET CAMARO 1998
CHEVROLET CORVETTE 1998
CHEVROLET KODIAK 1999-2000
CHEVROLET P30 1998-1999
GMC P3500 1998
GMC TOPKICK 1999-2000
PONTIAC FIREBIRD 1998

Monday I will find a vin for the 2000 topkick with the 7.4 and buy/sps the file and program it to a PCM core on the bench I have if I can. The bin file will not be comparable to the black box l29 but if what I plan works I can get you all or most of the calibration data. I hate it when I get curious :unsure:

[RADustin]

You got me curious, lol. I want to know now too. The PCM is one of these ACDELCO 21812298 {#19143664} which is pre-p01 style as noted below.

23861

CHEVROLET BUS 1999-2000
CHEVROLET CAMARO 1998
CHEVROLET CORVETTE 1998
CHEVROLET KODIAK 1999-2000
CHEVROLET P30 1998-1999
GMC P3500 1998
GMC TOPKICK 1999-2000
PONTIAC FIREBIRD 1998

Monday I will find a vin for the 2000 topkick with the 7.4 and buy/sps the file and program it to a PCM core on the bench I have if I can. The bin file will not be comparable to the black box l29 but if what I plan works I can get you all or most of the calibration data. I hate it when I get curious :unsure:

yeah I figured it was LS1a type hardware. Its a cool beast for sure and I'm doing something similar and just looking for a comparable tune file.

Thanks!!

[Ratssled]

Any luck?

I have the PCM from an L21 out of a 2000 School bus. The moded (Heads/Cam) engine is in my 96 Impala. I'd really like to know if there is any value in using the L21 OS and tune.

[joecar]

Do you have a pic of the service tag on your PCM

( maybe even a pic of the PCM might help )

[Ratssled]

23977

Sorry for the late reply. The email went to spam folder.