fresh newbi

[Fast355]

Often modifying a 4.8 manual .bin or 6.0 manual .bin is a good plan. Unfortunately a factory 5.3 manual .bin is not available. Modifying a 5.3 auto .bin to manual is also a good plan.

I like the plan modifying a 4.8 manual .bin with 5.3 engine parameters.

They exist in Mexico, just to track one down. They even had manuals in the GMT900 body style down there. 350s in the GMT800s too. There is an OE file for a 250 I6 with TBI for the 7427 that also exist in a ~95 C1500 in Mexico.