I have transplanted drive train from 2003 1500 Suburban to 1972 C20 only thing left of original drive train is differential, so gear ratio went from 3:73 to 3:54. Exhaust 2.5" with NO catalytic converters, and have deleted second set of o2 sensors.
Questions are:
1. Since I do not have cats should I disable COT and what would be the affect of doing so?
2. Should I consider flashing computer with a truck configuration?
I am new to tuning, and would appreciate any suggestions