I have a Lt1 383 that is new and keeps burning out the sensor in the distributor. I have replaced the stock distributor with a MSD Opti-Spark vented distributor and it melted the sensor in it as well. I have had the computer reflashed for the specs of the new upgrades and that was not the problem. Each time that I replaced the distributor it would only run for 2 weeks at a time and then suddenly just quit. I now have 2 distributors and 2 computers that I have replaced with and don't know where the problem is starting.

Specs of new motor:
LT4 intake
Comp Cam 510
Forged Flat top Piston
30lb Injectors
Ported Heads to match Intake
58MM Throttle Body
Moroso Cold Air Kit
EGR block Off Kit
Emissions Delete
Vats Bypass
Cloyes High Performance Timing Chain