Does anyone know if there is a way to tell the difference between 305 and 350 injectors? I can't seem to find any part numbers or anything and I am trying to figure out if someone put 350 injectors in this 350. It wont run and this is a final attempt before I burn it! Thanks to all.

 

a 350 will run on 305 injectors
a zz3 350 will run on a 305 prom and 305 injectors just not well
it will run with 350 computer and 305 injectors
and it will run with a 305 computer and the 350s injectors
honestly "untuned" mine runs best with the 305 comp and 350 injectors

 

Yea thats what I thought! Man is this thing kickin' my butt!! Ive been running round and round and round with this thing for a year! I can not for the life of me get this thing to run. Its an 88 TPI setup I put in a '40 coupe. Ran MINT when I first installed it. Then it sat couple months untouched and now nothing. Ive been through EVERYTHING checking and rechecking (I'm an L1 master Tech 15+ years that specializes in electrical so Im not a dummy) . Cranks mint. no codes. flashes 12 so ECM working. got power/grounds everywhere it needs it, got injector pulse, spark fuel pressure. Litteraly EVERYTHING has been replaced!! ECM included! I had it running once. Had wicked high idle (like vacuum leak) but had absolutely no throttle respose. Now I cant even get a fart out of it. Fires on ether. Tried 3 fuel pumps, regulator, all sensors, switches everything is new. Fresh rebuild 5.7. I ordered a set of injectors off ebay. Im crossing my fingers! Sorry for long post. Just lost... STILL!

 

Do you have the part numbers off of the injector? Let me know what it is, I will cross reference it for you.

 

I would make sure you dont have a vacuum leak. I had a similar problem when I first got my motor together. Had a slight high idle, horrible to start, needed ether. Ended up I had accidentally swapped the bottom gaskets for the runners. Causing it to not seal around the cold start injector.

 

i have the 305 injectors on a 350 block and need an injector so it would still work my 305 comp.without retuning it if i got the 22lb 350 injectors this is what youre saying yes?