So, I'm fixing up this old boat and it might be time to make the first big change.... I've got a stock 350 with a Quadrajet that's probably due for a rebuild or a replacement. I'm not going to do any drastic engine mods so I want to look into something mild but with decent throttle response but won't guzzle the gas. Any suggestions? The Qjet is 750cfm, right? Replace or rebuild?
Look up quadrajet power. Com or on Facebook. And look at everyday performance. Com too both members on here and have a great reputation of improving the carb on rebuild. The edelbrock runs lean at cruise speeds . not a bolt on replacement. Requires knowledgeable tuner . then look up Larry's power time thread. Both will improve running all around
1)cheaper to rebuild than buy a 500 dollar carb 2)vacuum secondaries - gas mileage 3)reliable and smooth 4)dont have to mess with adapters 5)dont have to change fuel lines 6)dont have to recalibrate anything 7)etc.
The Quadrajet is 750 cfm. It runs on small primaries when cruising, which delivers great fuel economy. It delivers fuel as needed and will only feed the engine what it needs. It meters fuel/air mixture under any load. Unlike many carbs that are all or none or the Eddy that has a backward fuel curve. They can be tuned for most any application.
What mark said, i have a 800 cfm buick carb on my little brothers 68 charger with a 440, runs awesome. my chevelle got 15 mpg with a 455 and a qjet
Good call. I had an Edelbrock for a long time and hated every minute of it. Bogged out terribly at WOT and never would run right.
I rebuilt the Qjet. It's like a new engine! It's a little harder to start now though. Could this have to do with the vacuum choke?
Yes you need to adjust choke. Not pulloff .you should have a thermostatic coil on passenger side of carb. Did you hook that up when carb was replaced.
