Ccc
Thread Starter
Burning Brakes
Joined: Feb 2022
Posts: 985
Likes: 183
From: South Carolina
Ccc
I know there are still quite a few still running the computer carburetor from 1981,and hadn’t had this car a month yet,and BOY have I learned a lot,so want to know how far I can go performance wise without interfering with any type warning or check engine lights, My plans keeping the CCC and replacing distributor,adding long tube headers and different heads.
Race Director
Joined: Nov 2006
Posts: 13,068
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From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
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Cruise-In VIII Veteran
If your replacing the distributor, your on your way. Then replace the computer controlled carb. Etc.
If you want to keep the computer controlled carb. then keep the entire system and live with the lack of power.
You can not have your cake and eat it too.
If you want to keep the computer controlled carb. then keep the entire system and live with the lack of power.
You can not have your cake and eat it too.
Race Director
Joined: Mar 2017
Posts: 11,805
Likes: 4,422
From: Virginia
If you are replacing the distributor with a 4-wire HEI, you are halfway there already. You should be able to remove the bulb for the CEL without taking your dash apart. You may need to remove the passenger seat to get the angle you need, but you can then reach your hand behind the center console and untwist the bulb socket. Here's a thread with a photo.
https://www.corvetteforum.com/forums...d-sockets.html
But seriously, if you are doing what you propose, follow @4-vettes' suggestion. Revert back to an earlier-spec Q-Jet carb, preferably one with an electronic choke. There are several recent threads where folks have gone through this.
https://www.corvetteforum.com/forums...d-sockets.html
But seriously, if you are doing what you propose, follow @4-vettes' suggestion. Revert back to an earlier-spec Q-Jet carb, preferably one with an electronic choke. There are several recent threads where folks have gone through this.
Thread Starter
Burning Brakes
Joined: Feb 2022
Posts: 985
Likes: 183
From: South Carolina
Ccc
Also,after 41 years,I’m wondering if this computer board is even any good,so want to remove the box and check the board,I’m not sure it’s even working anymore,so is there a way to check and see if it’s working,if so would like to see. Thanks.
Race Director
Joined: Mar 2017
Posts: 11,805
Likes: 4,422
From: Virginia
I haven't been blessed (cursed?) with an 81, so I haven't looked into it further.
Team Owner
Joined: Jan 2007
Posts: 53,648
Likes: 878
From: Southern Cal Ca
St. Jude Donor '22
when you turn the key to run, not started,
does the yellow check engine light come on?
under ash tray the ccc connector plug is there.
5 spade connector
short the 2 with a slot in them
makes ccc light blink
put a dwell meter 6cyl scale on green plug
hanging loose between a/c comp and carb
and ground to see what carb is doing at idle.
you need a factory service manual
does the yellow check engine light come on?
under ash tray the ccc connector plug is there.
5 spade connector
short the 2 with a slot in them
makes ccc light blink
put a dwell meter 6cyl scale on green plug
hanging loose between a/c comp and carb
and ground to see what carb is doing at idle.
you need a factory service manual
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Thread Starter
Burning Brakes
Joined: Feb 2022
Posts: 985
Likes: 183
From: South Carolina
Will have to check and see about the check engine light,but hadn’t noticed switching it off and on,but if the yellow check engine doesn’t appear,that means not mating with the computer?
Thread Starter
Burning Brakes
Joined: Feb 2022
Posts: 985
Likes: 183
From: South Carolina
Ccc
Pulled this off yesterday,and you could tell immediately how the engine could finally breathe,lol...so,will let the horses run now.lol talked to Summitt and They have been a big help.
Thread Starter
Burning Brakes
Joined: Feb 2022
Posts: 985
Likes: 183
From: South Carolina
So will be going with AVS2 Edelbrock Carburetor 650,and HEI blueprinted distributor and of course long tube headers and Edelbrock street Aluminum heads.that will wake it up after 41 years.lol
Race Director
Joined: Nov 2006
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From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
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Cruise-In VIII Veteran
Blue printed to who's engine? Certainly not yours if it's sitting on a shelf! Contact D.U.I. and have one made to suit YOUR engine!
And I don't think much of your carburetor choice. Find a good used, unmolested 75 - 80 Carburetor and have Lars go through it. THAT is what you want if your looking to wake up your engine !
And I don't think much of your carburetor choice. Find a good used, unmolested 75 - 80 Carburetor and have Lars go through it. THAT is what you want if your looking to wake up your engine !
Thread Starter
Burning Brakes
Joined: Feb 2022
Posts: 985
Likes: 183
From: South Carolina
As for blueprinted, not sure this is from Summit Racing,and he got all my information for my block,heads and so on.and he told me this was the best set up for my car. As for that Lars,I have sent him several messages not to mention I want to drive the car Don’t want it sitting a month or so waiting to send a carburetor off and wait for it that could take months.
Thread Starter
Burning Brakes
Joined: Feb 2022
Posts: 985
Likes: 183
From: South Carolina
If you mean DUI Davis Unified Ignition,If I look at DUI on my laptop,it takes me straight to Summit Racing,which are the people that gave me the distributor information,not sure if it’s a DUI,but for $250,I would say it would work good,as for the carburetor there’s a place I found called National Carburetors that have the early model Chevy rebuild carburetors,but they cost as much as a new Edelbrock,not to mention you have to send them your core or charge you an extra $50.00. So,don’t see paying more for a rebuild when I can get a new one cheaper,and it’s over $400.00.
Dr. Detroit
Joined: Mar 2012
Posts: 10,090
Likes: 4,015
From: New Braunfels Texas
If you put an Edelbrock AVS on the stock intake you will regret it. The required adapter has such a mismatch on the primary side that it will never run correctly.
If you want to use that carb, then replace the stock intake with a 2101 Performer.
Jebby
If you want to use that carb, then replace the stock intake with a 2101 Performer.
Jebby
Thread Starter
Burning Brakes
Joined: Feb 2022
Posts: 985
Likes: 183
From: South Carolina
And we talked about intakes,and did mention that because to that the corvettes hood was so low,that their wasn’t a lot of options as with intakes,so Jebby, are you for sure this intake would fit with no clearance issues. Thanks