Carb swap
Thread Starter
Heel & Toe
Joined: Aug 2019
Posts: 22
Likes: 2
Carb swap
Hello everyone. First tech post!
I have a 77 C3 L-82 that I bought recently. It has been rebuilt by the previous owner, with Edelbrock intake and original Quadrajet 4 barrel. There are some minor bogs, hesitation during acceleration at times, and I am considering having the carb cleaned and rebuilt. However, my secondary plan is to swap the Quadrajet with a new comparable Edelbrock. Considering I am a novice in the carb department (as you can likely tell by this post), I am looking for suggestions on which route to take. My gut (and research) tells me to keep the Q-jet and have it rebuilt and tuned?
Thanks
I have a 77 C3 L-82 that I bought recently. It has been rebuilt by the previous owner, with Edelbrock intake and original Quadrajet 4 barrel. There are some minor bogs, hesitation during acceleration at times, and I am considering having the carb cleaned and rebuilt. However, my secondary plan is to swap the Quadrajet with a new comparable Edelbrock. Considering I am a novice in the carb department (as you can likely tell by this post), I am looking for suggestions on which route to take. My gut (and research) tells me to keep the Q-jet and have it rebuilt and tuned?
Thanks
Race Director
Joined: May 2006
Posts: 18,731
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Is my vette stock?? HAHA
Joined: Oct 2015
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From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
THe edelbrock bog has to do with the secondary air valve on top of the secondaries. Its the weighted flap that opens with your finger. Quadrajets have the same flap but it is tuneable with a spring and set screw. Edelbrock just discovered this with their new AVS carbs and added a tuneable spring that Rochester had over 50 years ago. Go figure.
If you want to go with the old school look and be closer to original, definitely get a Quadrajet but you will need a new intake that is made for spreadbore carbs. You may already have one if the PO used an adapter plate to fit the edelbrock carb. The one downfall is that as the carbs get older the carb bases may start to seep fuel, then you end up with flooding and fuel evaporation problems
If you want to go with the old school look and be closer to original, definitely get a Quadrajet but you will need a new intake that is made for spreadbore carbs. You may already have one if the PO used an adapter plate to fit the edelbrock carb. The one downfall is that as the carbs get older the carb bases may start to seep fuel, then you end up with flooding and fuel evaporation problems
Racer
Joined: Apr 2019
Posts: 300
Likes: 83
carb rebuild
my carb is at lars as we speak, it should be done today, I was in the same boat as you are the previous owner of my 81 vette removed the computer and instaled a cheap carb that was not right for this engine, pulled my hair out. than some one told me about lars. he found the one i needed on ebay. i paid for it and had it droped shipped to lars. this guy is amazing he keeps in touch almost daily on what he is doing wants to know every thing about what engine it is going on what transmission and exhaust your running on your vette
mine will be done today i hope
mine will be done today i hope
