Better Performance Output
If it was mine, I would make sure the combo that's THERE is in optimal tune FIRST, before changing anything. Often times, when one does not run to the potential the owner thinks it should, it's simply a case of not having the best tune. "I" would try that first. It may pick up the gains you're looking for.
Agree. This would be the best use of your money. However I did note...
Wish I knew how to tune them or where to go to get it tuned....The last tune before I changed over to the Air gap intake cost me just over $600.00 They did an optimum tune with jet/metering rods and changed out the weights for timing advance. They did an awesome job with its performance, but the tune cost me as much as a new 750 double pumper....thinking of getting both carbs tuned to the engine and just using the 750 on the track
Swapping carbs to go to the track is a PIA. Would you really want to do that to gain what, a couple of mph? If so, OK? But either way if you're going to do any retuning with the current carb, then do it first and check the manifold vac to see if there's really any decent potential in a larger carb.
Also. Since the only changes you made were intake and exhaust, the timing should not need anything else. So if you want to start learning. This is a great time. I posted some starting points for tuning on and off dyno a couple threads down - you can skim through that.
Quick Fuel Carb. So these are actual Holly Carbs as well?.. So much information and so much to choose from...Are the Quick Fuel Carbs just as good as the Holly Carbs?
They have advantages and disadvantages but in principle, the work exact same way.
I just checked that ad out. Unfortunately that's not a good build. If you want to pickup one, get an early one, and preferably one thats not been modified.
The Quick Fuel 650 I currently have required extensive tuning and clogged up easily as the car went through its cosmetic restoration of over a year. I had to rebuild it at $250.00 just to get it going again. It performs awesome when optimally tuned on the dyno.
Here's a great place to start. Learn to clean to clean 'em and put new gaskets in. There's really no reason why it should have clogged due to a restoration other than portions of fuel turns to varnish over time. The rebuild will cost you time, some gloves (get the black ones), carb cleaner and some gaskets.
Re: Electric choke. Is the current carb setup with one? I ask for two reasons. Automatic chokes can be a pain to set up with hot cams. This is made worse if the carb doesn't have choke 'pull off". This the vacuum actuated partial opening of the choke once the engine is running. Also our cars didn't come with electric assisted chokes - so that portion will need to be wired in if it hasn't been.