I'm beginning to realize that when the fellow that put my 355 in bolted everything back on from the 305 tpi said he did it in his spare time, might should have raised a red flag or two. My question is (among other problems) I CANNOT get the car to idle; it will bounce between 1200 and cut-off. I have replaced the IAC motor and temp sensor (on the right side of the block) with new ones for a 350. I'm wondering if I need to replace the knock sensor, TPS sensor or anything else. This kind of coincides with my question below about upgrading my TPI/air intake as this seems more of a repair than an improvement.

HELP!!!

Thanks, Eric

 

check timing, fuel psi, and fuel injectors.