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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: 1979mmx350 on August 11, 2015, 02:01:42 am
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What types of tools do I need to get to and remove a carb? Mine is desperate for a rebuild right now and a mechanic who looked at it says it's originally for a 6cyl truck. How bad is this anyways? I'm gonna have a better look at it myself and then decide if I wanna pick up a solid quadra carb from Holley.
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THIS (http://forum.73-87chevytrucks.com/smforum/index.php?topic=11934.0) might help. but it only takes the basic tools to remove the carb. might need a pic and small screwdriver once to rebuild
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I just went through the same process. My Q-jet was in bad shape, mainly because it sat with rotten fuel in it, in the woods for years before I got the truck.
It's interesting that you say you were told the carb was made for a 6-cyl engine. My C10 truck originally came with a 4.3 V6 and has this very carb on it. When someone stuffed a 350 in there, they reused the old carb. I never knew they made specific Quadrajets for V6 or V8's independently. I was never able to get my idle mixture just right with the Q-jet that came off the V6 engine while running it on the 350. I could back both screws out all the way and I was never able to get the mixture "too rich" and then turn them back in for the proper mixture. I thought perhaps this was an indicator it was made for a V6 (?) Still not sure.
Due to what I thought was lack of time, I changed over to an Edelbrock 1405, which I am extremely pleased with.. BUT.. Having to buy an adapter plate to fit the stock iron manifold, re-route the fuel line, add a regulator and fuel filter, and engineer a new throttle bracket and spring assembly, I have as much time a lot more $$ in the project than had I just sat down and learned to rebuild the Quadrajet.
Mack.
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Quadrajets in general are DEAD simple to rebuild. There are a few things you need to pay attention to when doing it but if you can do basic mechanical work you can rebuild a carb.
With that said be warned because for example I swapped out my cam and now I have to tweak and make some adjustments to my carb. You may find after rebuilding the carb that it will need to be reset or completely readjusted because it was running so poorly.
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If I needed a new carb, how much would I need to spend for a solid performance part? I'll be tearing out my current carb first thing tomorrow, but I would honestly prefer all new parts in my truck.
For the time being, it's sitting at stock height with a 4 spd, but I wanna drop it and make it quick down the line if that means anything....