I’m preparing and engine swap to a 383 from a 350 in a 91 Corvette TPI. What would be the precautions I have to take for tuning the ECM ?
for example if the mixture is way off or wrong timing I could get knocks or backfire into the intake. Or should I avoid WOT until I improve the VE and timing maps gradually?
Obviously the mixture will need to be properly set up at the end but you won’t know until you datalog it. Another thing I’ve noticed the corvette uses quite high spark advance however (some cells show even 46 deg) that’s only at low rpm low load, but maybe it’s better to start tuning with up to say 32 degrees?
the new engine has a mild cam 0.5 lift, 112 LSA, 68cc chambers 9.8 compression, 440ccm bosch injectors,
so quite different configuration, if the tuning is way off it might not even start