I just purchased a 1405 Edelbrock carb. I put the carb on and my Blazer wouldn't start. I turned the distributor until I got it to start. Once it was running and warmed up I set the time back to 12 degrees advanced. When it's running it runs great BUT cold or warm it is a PITA to start. Typically to get it to start I have to just hold the accelerator to the floor and start pumping once it starts to fire.

I was just wondering if anyone had any tips? Is the carb tuned wrong? Should I set my timing differently? Any suggestions will help!

Motor is a rebuilt 350, bored .030 over, mild cam, vortec heads, dished pistons, makes about 9.5:1 compression.

 

check the choke settings and the float settings a lot of the times the floats get screwed up during shipping - then set the idle screws - start with them seated then go a turn and a quarter out then fine tune in or out too max vaccume - float settings can be found at edelbrock.com i dont remember them of the top of my head