ok i still have not put on the carb thnx for the feed back. now to another ? what do i hook the new vacume advance distributer too once i remove the electric one i know how to remove and install just not sure how to or where to get the power from this is my first HEI chevy V8 that i have owned. Second ? i have installed a tach in the car and the car will not go pass 4,300 rpm in third on highway no matter how hard i press the go pedal what could this be???

 

If you're putting a large coil-in-cap HEI in, it hooks up the same as the original, except the flat 4-wire connector that comes from the base of the original distributor and goes to the firewall harness won't be there on the vacuum/mechanical distributor.

You might be running out of fuel in 3rd.

 

make sure the fuel line isnt kinked by the fuel pump down there,

also make sure the filter int he front of the carb is not dirty, i never run that filtr in mine i always toss it and use an inline filter or no filter at all, never ever had any trouble with not using a filter actually

but if your lines are rusted inside anywhere then you will know it lol

i have just been lucky is all

the HEI you need will be the one with vaccuum advance and just three wires,


non computer controlled one

very common

most ppl have a few just laying around

sbc and bbc ones are the same

good luck

 

All you need for power is one wire that supplies 12 volts with the ignition key turned on. Make sure it's only hot with the ignition turned on. In other words, don't use a wire that gets power straight from the battery. Hook it to the BAT+ terminal on the HEI. The TACH- terminal is for your tach of course. Then just hook the vacuum advance hose to a vacuum port on the carb. You can use a port that has constant vacuum, or even better, use a ported vacuum source if you carb has one. A ported vaccum source only supplies vacuum after you open the throttle some. Since you don't need any vacuum advance at idle, it's better to use ported vacuum on most cars. Straight vacuum ports are usually located in the baseplate of the carb, whereas most ported ones are somewhere on the main body of the carb.

 

alright i put on the carb on. in my atempt to check the filter in the Q-jet the fuel line got a whole in it so in order to get to work i had to install the edelbrock 600cfm elc choke the rich fuel smell went away much more crisp off idle response felt stronger but still wont go pass 4300 rpm's what could this be fuel press is 7.5 psi so i know i have good fuel press and my mixing bowl is working properly the car also does not smoke no where near what it used to sinc the carb swap

 

have you checked the catalytic converter? when they become plugged they often cause the symptoms you are having

 

What have you set your timing at?