Carb replacement
Thread Starter
Cruising
Joined: Jun 2025
Posts: 10
Likes: 3
Carb replacement
Hello everyone,
I’m new to the forum, so please bear with me.
I just purchased a 78 base model with a Edlebrock performer manifold and rochester
quadrajet. I’m looking to replace the carburetor.
Not sure if I should buy the same one? or if there is something better out there. Any suggestions
would be appreciated.
I’m new to the forum, so please bear with me.
I just purchased a 78 base model with a Edlebrock performer manifold and rochester
quadrajet. I’m looking to replace the carburetor.
Not sure if I should buy the same one? or if there is something better out there. Any suggestions
would be appreciated.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
You likely won't take this advice, as others would tell you to buy a new Edelbrock or Holley carb. But your VERY BEST alternative would be to have the Q-jet you presently own rebuilt by Lars Grimsrud (Colorado).
If this is of interest to you, contact him at V8FastCars@msn.com to ask if he would rebuild it. With that query, attach clear photos of the carb you have from each angle, including the P/N and date code stamped in the left-rear corner post.
Good luck
If this is of interest to you, contact him at V8FastCars@msn.com to ask if he would rebuild it. With that query, attach clear photos of the carb you have from each angle, including the P/N and date code stamped in the left-rear corner post.
Good luck
Race Director
Joined: Nov 2006
Posts: 13,335
Likes: 7,904
From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
2024 C3 of the Year Finalist- Modified
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Cruise-In VIII Veteran
As the car is over 45 years old. Hard to say of it has the original carburetor still on it or not.
If it is indeed the original carburetor. The above advice is spot on. You simply can not get a better carburetor. They do not make new ones. Other than Chinese copy's that are truly horrible.
Getting a hold of Lars with plenty of good clear photos should be your first step.
If it is indeed the original carburetor. The above advice is spot on. You simply can not get a better carburetor. They do not make new ones. Other than Chinese copy's that are truly horrible.
Getting a hold of Lars with plenty of good clear photos should be your first step.
Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,810
From: Cool Northern Michigan
Clocas,
If you are referring to the Edelbrock 2101 model number, you are in luck.
That is a very popular Intake because its a Square-bore & Spread-bore both, design. That gives you lots of options.
Unless someone is smoking a dobie, no one else would recommend an Eddy carb.
Edelbrock makes the best Intakes in the world. Some great cyl heads and their cams or ok.
But their carbs? Not so much.
Several of us chose a Holley as a replacement. The 4150 series will bolt right up to that Intake.
It's just a matter of routing a new fuel supply line.
If you are referring to the Edelbrock 2101 model number, you are in luck.
That is a very popular Intake because its a Square-bore & Spread-bore both, design. That gives you lots of options.
Unless someone is smoking a dobie, no one else would recommend an Eddy carb.
Edelbrock makes the best Intakes in the world. Some great cyl heads and their cams or ok.
But their carbs? Not so much.
Several of us chose a Holley as a replacement. The 4150 series will bolt right up to that Intake.
It's just a matter of routing a new fuel supply line.
Racer
Joined: Jan 2024
Posts: 281
Likes: 112
Race Director
Joined: Mar 2016
Posts: 14,476
Likes: 8,258
From: Napa Valley California
You can’t get any better carb than getting the QJet rebuilt by Lars.
The carb on my 73 had been replaced with an aftermarket knockoff that ran like crud.
If it would have been an original I would have had Lars rebuild it.
If for some reason it isn’t rebuildable, then I would look at Quick Fuel carbs.
They are the top line that Holley offers in their line and you can buy them direct from Holley.
The carb on my 73 had been replaced with an aftermarket knockoff that ran like crud.
If it would have been an original I would have had Lars rebuild it.
If for some reason it isn’t rebuildable, then I would look at Quick Fuel carbs.
They are the top line that Holley offers in their line and you can buy them direct from Holley.
Melting Slicks
Joined: Apr 2021
Posts: 2,751
Likes: 2,193
From: Minnesota
Your Quadrajet has a carb number on the drivers side above the secondary throttle shaft. Depending on your options there’s quite a few different numbers for ‘78s, but all start with 17058. What does yours say?
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Tech Contributor
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From: At my Bar drinking and wrenching in Lafayette Colorado
Lars
Tech Contributor
Joined: Aug 1999
Posts: 14,385
Likes: 6,414
From: At my Bar drinking and wrenching in Lafayette Colorado
I'll be out of the office for a couple of days, so I'll do a review of your photo post and tag you back with some good info as soon as I return.
Lars
Lars