[onequickchevy]

Check for fuel and spark. I had an 85 that would eat an HEI module about once a year. I just kept a spare in the glove box. Could also be as simple as the HEI came unplugged, especially if you used a female spade connector instead of the factory plug that clips on. My 63 on the other hand would run down the road fine until it got to operating temp and would vapor lock. Electric fuel pump and insulation took care of that one. Good luck!