I have a 305 LG4 with the "C4" emissions system. That includes the CCC Carb. Can the stock prom be used on a 350 since the computer is controlling the carb, not injectors? I know I'll have to rejet the carb though. Another question. Do many Camaro's use the "C4" system? I know it was one of the first computer controlled setups designed by GM and that it wasn't used on later LG4's. (Is that correct?)

Thanks and sorry for all the questions,
Matt

 

Not sure if the ECM is the same. Find out if the ECM has the same service number as the '81 ECM - if so, you can probably use the stock PROM. If not, I'd say see if you can find someone with an '81 computer laying around; the pinouts would be identical, I'd think, but you might want to get wiring diagrams for both years to be sure.

Ken