Ls1b l31 5.7l
I thought I'd share these 2 unusual tune files I have. Both are from Mexico market GMT800 (99-06 & 07 Classic) Silverado 3500’s that came with 5.7L L31 CPI engines and 5 speed manual transmissions. They are both LS1B 1mb, 4x low resolution crank reluctor, basically a V8 enabled version of the 4.3L of the same era. I’m sure a few people will find these handy for engine swaps. I’m working on 350ci SBC EFI conversion with a manual transmission and I think these are a better option than manual transmission segment swapping an 01-02 512kb van OS.
If anyone else has similar files I’d appreciate if they’d share them. I’d like to have one for every model year
Reply With Quote