CARBURETOR REPLACEMENT ON A CHEVY 350 C3 CORVETTE

I changed out the Quadrajet carburetor on the Chevrolet 350 on my C3 Corvette with the correct numbered Quadrajet carburetor.

[@NorthFloridaOutdoorsman]

Appreciate the video , just got a 73 that my dad and I are restoring, the info really helps .

[@timewiththedurbins]

Thanks for watching. I'm glad I could help. I think it's great when a father and son get to work together on a project like this.

[@Nobamaable]

Great video, Mark. I'm running a Holley carb and an aftermarket manifold (Edelbrock performer) on my 71 and she runs great. Good luck with the manifold project.

[@timewiththedurbins]

Thanks. I would really like to get a Holley Sniper EFI. Maybe I will for it for Christmas. LOL

[@markmontgomery9954]

I was lost after the first disconnect, lol , but I still liked the video. 👍 you need to get you some of those sweat bands! That's really a nice building you have to work on all your projects. Thought any about putting in air? I mean, with all your money and all, LOL LOL LOL Love to all, Sis

[@timewiththedurbins]

I am accepting donations for AC in my building if my wonderful rich sister would like to send me some money, hint, hint, wink, wink. LOL

[@markmontgomery9954]

Sounds like you better go start up a go fund me, LOL LOL LOL

[@timewiththedurbins]

How much can I put you down for? :-)

[@Sekhonjot]

How did you cap off the manual choke vacuum lines? There are two lines that sits below the choke and I see you have capped those off.

[@timewiththedurbins]

I used some rubber caps. I purchased a pack of caps at one of the auto parts stores.

[@russellboyd5262]

UNLESS YOU WANT TO KEEP YOUR BABY WITH MATCHING NUMBERS, YOU COULD HAVE BOUGHT A NEW 350 GM CRATE ENGINE, WITH A WARRANTY, FOR WHAT IT WOULD COST TO REBUILD AN ENGINE.

[@timewiththedurbins]

I agree with you. I thought I would save money by rebuilding my engine. I now know I was wrong. The thing that really sucks about the whole deal is that it's not a numbers matching engine. Live and learn. Thanks for watching.

[@russellboyd5262]

@@timewiththedurbins I SUBSCRIBED, ALWAYS HIT LIKE, WATCH UNTIL END OF VIDEO, BECAUSE YOU ROCK DUDE.LOL

[@timewiththedurbins]

Thanks for watching and the kind words. I greatly appreciate it.

[@russellboyd5262]

@@timewiththedurbins YOU ROCK DUDE, LOVE YOUR VIDEOS, PLEASE, KEEP THEM COMING FOR SURE. LOL

[@timewiththedurbins]

Thanks

[@kc033056]

Great video. What are your Rpm’s at 55? I just got a 1975, manual, and it screams at 55.

[@timewiththedurbins]

My RPMs at 60 are 2300. A friend of mine has a 76 with a stock 4 speed and his car runs around 3000 at 60 MPH. I think mine is lower due to the fact that my car originally came with an automatic. I don't know gear is in the rear end.

[@straighttimestirrups]

What Cam are you running? What was your vacuum number at idle? What kind of mileage are you getting with your current set-up?

[@timewiththedurbins]

I am running a stock cam. At the time of this video I was only running around 11" of vacuum due to a timing issue that I resolved in a future video. After I corrected the timing I am running around 17" of vacuum. At the time this video was made my speedometer was not working so I had no way of checking mileage. Again that issue has been corrected but I have not checked to see what kind of mileage I am getting. I will try to check it and post the results in a future video. Thanks for watching.

[@straighttimestirrups]

@@timewiththedurbins when I heard you say 11” of vacuum that didn’t sound right at all with a stockish sounding cam.

[@timewiththedurbins]

It was that low due to the timing chain being off one tooth. I did not assemble this engine so it took some time for me to figure out why the engine was running so bad. The video I posted on August 14, 2022 titled "Timing one tooth off on a Chevy 350". That video explains the issue I was having with the engine and why the vacuum was so low. If you get a chance, please watch it and let me know what you think. Thanks,

[@JamesBrown-jy5sy]

It would be nice to know what year your "C3 Corvette" is. It's obvious that you removed a M4 series and replaced it with a 4M series Quadrajet.

[@OrignalRobRobert]

Link for carb?

[@joevette6290]

I didn't see or hear those secondary flappers opening up ?? you sure the carb is performing at max??

[@timewiththedurbins]

I'm not sure of anything with that carb but the good news is my new Holley Sniper EFI came in today so in a few days that old carb is not going to matter. I also purchased Edelbrock aluminum heads and Performer manifold. I have been watching some KZbin videos on the heads and most people say they need to be reworked before you put them on your car. I'm going to pull a couple of valves out and check the seat run out. On the videos they were getting between .008 to .010 run out. That is way too much.