i just rebuilt my engine and rebuilt my edelbrock 600 carburater its model number 1405 i believe well anyway my car is letting out some black smoke when i get on it and let up im im assuming im running to rich if i am how do you set the idle mixture screws up front

------------------
92 camaro 25th anniversarry polo green with 2 gold stripes stock 305 tbi

89 camaro
white
92 ground effects
cowl induction hood
tinted windows
accell plug wires
K@N filter
305 from 92 camaro
carburated
bored .030
flat top pistons
larger valves
zz4 cam
heads shaved

 

do you have a fuel pressure regulator, if not then you need to get one with a bypass in order to fix this problem, are u still using you stock electric fuel pump. was the car TBI. Dont go cranking on the mixture screws to cure this problem!

------------------
91 RS W/carbed 350, Vortec heads, performer rpm, Comp cams Xtreme energy 280 grind. BFG Drag radials. 3.42 posi,Corvette servoed 700r4, ****ty stock converter
13.24@104

 

yes im still running the stock fuel pump and yes i have a holley regulater and yes the car was tbi what do you mean a regulater with a bypass

------------------
92 camaro 25th anniversarry polo green with 2 gold stripes stock 305 tbi

89 camaro
white
92 ground effects
cowl induction hood
tinted windows
accell plug wires
K@N filter
305 from 92 camaro
carburated
bored .030
flat top pistons
larger valves
zz4 cam
heads shaved

 

That carb was more or less jetted for a 350. You gotta get a carb tuning kit and work with the supplied instructions!!!

 

I don't know if the idle mixture screws are your problem or not, but if you want to try to adjust them, there are instructions on the edelbrock web page. www.edelbrock.com. go to 'carburetors' and they have an instruction manual online.

 

the mixture screws for that carb are only for idle mixture...anything in the driving range is controlled only by the rods. the edelbrock page will tell you what rods/jets to use to go a step or 2 leaner

------------------
350, Comp 262, Edelbrock Performer intake 600 cfm carb and exhaust, headers

 

when the TBI pump runs and pushes extra fuel, the fuel needs somewhere to go, like back to the tank.....otherwise the pump will run hot due to the excess load which could cause premature failure. I did the same thing you did, however I used the mallory 2-port and used the return line that was already there for the stock app.

------------------
91 RS W/carbed 350, Vortec heads, performer rpm, Comp cams Xtreme energy 280 grind. BFG Drag radials. 3.42 posi,Corvette servoed 700r4, ****ty stock converter
13.24@104