hello got a quick question i want to swap my 1988 305 tbi engine to 350 tbi engine same year do i need to swap out ecm or prom?or can i use ecm thats allready in car?also have a slightly modded prom for a 89 305 tbi available to me.any help would be greatly appreciated :hail: also can i use same sensors from 305 in the 350?

 

yeah, you should be able to use the same ECM. I'm using the 746 ECM from my 305 RS to run the 350HO I put in my car. If you're just running stock 350, then get a stock prom for the 350. If you're running a different cam, you'll probably want a custom chip. You should be able to get by with the same knock sensor, but you may want to use the correct one for the 350TBI for best results. They're not that expensive. You'll definitely want to swap for the 350 TBI spark control. The O2 sensor is the same. Those are the three most important ones. Good luck!