and what did you have to do to it to make it run right while keeping it tbi.

 

For a VERY smooth transition you would need 350 injectors, knock sensor and 350 chip.

You can get away with just the knock sensor and increase the fuel pressure on the 305 injectors (which will be tricky to get perfect) and run the 305 fuel curve.

 

What will happen if i dont put the 350 knock sensor in, And where can i get a 350 chip? I already have a tb off of a cop car that's has the 65 lb hr injectores in it

 

The 305 knock sensor will detect knock in a 350 engine when there is none due to the larger displacement of the 350. Knock sensor is a $35 piece. So the 305 sensor "will" work but you engine may become retarded

Brian

 

What do you mean by my engine may become retarded? And what is the part number for the knock sensor that I need






P.S. Thank you for all of your help

 

I swapped my LO3 for an LO5 and everything went very smoothly. Part numbers I used:

350 Truck Injectors(2) GM Part#17112493
350 Truck Knock Sensor GM Part#10456288
350 Truck Knock Module GM Part#16128261

I used an ANLU chip for a 350 Caprice.