alright heres the deel i have just found out i have been driving my 305 with 350 injectors out of a chevy truck i put them in when i bought the car when i installed a new fuel pump pretty stupid i know. its burns very rich. ok but heres my question i have 305 cross fire injectors part# gm5234255 look just like the right injectors does anyone know if they will work for TBI305? and i have some brand new 4.2lrt TBIinjectors out of a caty i take it theese would run two lean.. i understand this, but what about the crossfire 305 injectors?

 

That pn is from the LU5 (305) CFI engine, per:

http://www.crossfire.homeip.net/cfte...ID=18&CAT_ID=1

CFI is fed by two single-bore TBI units, but the injectors for CFI are externally the same as those used on std 262 v6, and 305, 350, and 454 v8 TBI engines. So they'll fit and work.

What I don't know if whether the flow rate for them at stock fuel pressure will be slightly low, because the GM rating for the LU5 was (?) 150 hp and the LO3 was 170 hp. So you will need to check the plugs & tailpipe as a rough estimate to see if you need to slightly up the fuel pressure. HTH.

 

thanks man much help i coulnt find it not even on google last night

 

The LU5 was rated at 165hp. Low pressure tbi injectors are rated at the same pressure.

 

Perfect. 165 hp is close enough to 170 hp.... so there should be no need to worry about the fuel pressure.

 

haha wow i just installed them and my 305 runs like a new one! them injectors come out of my uncles 82 z28 Thats a chevy for ya