I can if you don't tune and burn chips.
Need some more info like PCM number and chip BCC (four letter code) is the chip and PCM same one that came with the transmission? 94 to 95 4l60E transmissions are different and need to match the chip.
Also cam specs and anything else done to motor. Headers?
EGR hooked up? Air pump? CCP?
Have you checked for error codes yet? What are they?
Timing set to 0 with bypass wire disconnected?
What is fuel pressure?
1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
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