81 carb and dizzy help
Thread Starter
Intermediate
Joined: Apr 2017
Posts: 47
Likes: 1
From: Colorado Springs
81 carb and dizzy help
I have an 81 with a 350 I just installed in the car. We got r fired and idling for about 1 minute each time and then chokes out and dies.
I’m running the stock quadrajet with all the computer crap but am running a vacuum advance hei distributor just to get it running before getting rid of the quadrajet. I do have the vacuum hooked up for the dizzy. These two should work fine temporarily correct?
Just making sure before I start adjusting timing and have to swap dizzys. Would really like to keep keep the vacuum advance so I can rip the computer out after carb swap. Already “forgot” to install all the smog crap
I’m running the stock quadrajet with all the computer crap but am running a vacuum advance hei distributor just to get it running before getting rid of the quadrajet. I do have the vacuum hooked up for the dizzy. These two should work fine temporarily correct?
Just making sure before I start adjusting timing and have to swap dizzys. Would really like to keep keep the vacuum advance so I can rip the computer out after carb swap. Already “forgot” to install all the smog crap
Racer
Joined: Nov 2017
Posts: 289
Likes: 32
I have an 81 with a 350 I just installed in the car. We got r fired and idling for about 1 minute each time and then chokes out and dies.
I’m running the stock quadrajet with all the computer crap but am running a vacuum advance hei distributor just to get it running before getting rid of the quadrajet. I do have the vacuum hooked up for the dizzy. These two should work fine temporarily correct?
Just making sure before I start adjusting timing and have to swap dizzys. Would really like to keep keep the vacuum advance so I can rip the computer out after carb swap. Already “forgot” to install all the smog crap
I’m running the stock quadrajet with all the computer crap but am running a vacuum advance hei distributor just to get it running before getting rid of the quadrajet. I do have the vacuum hooked up for the dizzy. These two should work fine temporarily correct?
Just making sure before I start adjusting timing and have to swap dizzys. Would really like to keep keep the vacuum advance so I can rip the computer out after carb swap. Already “forgot” to install all the smog crap
Isn't your '81 subject to smog testing in New Mexico? If so you are very limited as to what kind of changes you make.
Le Mans Master
Joined: Dec 2006
Posts: 8,837
Likes: 1,027
I have an 81 with a 350 I just installed in the car. We got r fired and idling for about 1 minute each time and then chokes out and dies.
I’m running the stock quadrajet with all the computer crap but am running a vacuum advance hei distributor just to get it running before getting rid of the quadrajet. I do have the vacuum hooked up for the dizzy. These two should work fine temporarily correct?
Just making sure before I start adjusting timing and have to swap dizzys. Would really like to keep keep the vacuum advance so I can rip the computer out after carb swap. Already “forgot” to install all the smog crap
I’m running the stock quadrajet with all the computer crap but am running a vacuum advance hei distributor just to get it running before getting rid of the quadrajet. I do have the vacuum hooked up for the dizzy. These two should work fine temporarily correct?
Just making sure before I start adjusting timing and have to swap dizzys. Would really like to keep keep the vacuum advance so I can rip the computer out after carb swap. Already “forgot” to install all the smog crap
Thread Starter
Intermediate
Joined: Apr 2017
Posts: 47
Likes: 1
From: Colorado Springs
Thanks that would make semi sense, but if it only controls the curve then for idle sake it should idle properly / run enough to break in the cam and cycle the coolant?
Thread Starter
Intermediate
Joined: Apr 2017
Posts: 47
Likes: 1
From: Colorado Springs
Le Mans Master
Joined: Dec 2006
Posts: 8,837
Likes: 1,027
Then it stops all feedback from the oxygen sensor.
The crab will work basically like a normal quadrajet when unplugged, so try unplugging it all.
Set the dizzy to 16* static and try it.
Thread Starter
Intermediate
Joined: Apr 2017
Posts: 47
Likes: 1
From: Colorado Springs
I have a 650 holly double pumper spread bore and a square Edelbrock carb. Neither of which are computer controlled but they don’t have electric chokes and probably need rebuild kits.
Ill give the above a try. If I’m unplugging the carb, can I unplug the air cleaner solenoid thing?
sorry I’m new to this, first build
Ill give the above a try. If I’m unplugging the carb, can I unplug the air cleaner solenoid thing?
sorry I’m new to this, first build
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
Le Mans Master
Joined: Dec 2006
Posts: 8,837
Likes: 1,027
I have a 650 holly double pumper spread bore and a square Edelbrock carb. Neither of which are computer controlled but they don’t have electric chokes and probably need rebuild kits.
Ill give the above a try. If I’m unplugging the carb, can I unplug the air cleaner solenoid thing?
sorry I’m new to this, first build
Ill give the above a try. If I’m unplugging the carb, can I unplug the air cleaner solenoid thing?
sorry I’m new to this, first build
Thread Starter
Intermediate
Joined: Apr 2017
Posts: 47
Likes: 1
From: Colorado Springs
theres actually three electronic hook ups on the carb plus the electronic choke. My AIM calls one the “fuel metering solenoid” , one “a/c solenoid connection” and one “throttle control sensor”. On a different page, the a/c solenoid is also depicted as “idle solenoid”. However if I’m thinking properly, since this is an air conditioned car, maybe it is ac as in air conditioner and not air cleaner. Likely bumps the idle up when the ac comes on?
I would imagine i leave the idle solenoid and choke connected and disconnect the fuel metering and throttle control sensor.
I also just just noticed the heater core is leaking , and not from the hose. Darn.
I would imagine i leave the idle solenoid and choke connected and disconnect the fuel metering and throttle control sensor.
I also just just noticed the heater core is leaking , and not from the hose. Darn.
Le Mans Master
Joined: Dec 2006
Posts: 8,837
Likes: 1,027
theres actually three electronic hook ups on the carb plus the electronic choke. My AIM calls one the “fuel metering solenoid” , one “a/c solenoid connection” and one “throttle control sensor”.
I would imagine i leave the idle solenoid and choke connected and disconnect the fuel metering and throttle control sensor.
I would imagine i leave the idle solenoid and choke connected and disconnect the fuel metering and throttle control sensor.
Thread Starter
Intermediate
Joined: Apr 2017
Posts: 47
Likes: 1
From: Colorado Springs
so then with a non computer controlled carb, I would still have to have the main wiring harness because I need the idle connector and temp connector that goes into the intake mani, correct?
So why do all the threads about removing the computer system say to unplug the harness at the firewall.
So why do all the threads about removing the computer system say to unplug the harness at the firewall.