Ok guys need help I have a 65 Mustang with a 68 302. need a new Carburetor. doing the calculations i need a 500 cfm carb. what do you recommend. Edelbrock or original ford 2100 or 4100. I have a edelbrock 289 performer intake. i noticed that the 2100's have different cfms which one is 480-500 cfm. and can i use the 4100 or 4300. need advice please.
thanks
Johnny

 

I just bought the edelbrock 500cfm from summit. Very satisfied with the quality and performance. The fuel inlet however is on the passenger side in the rear
and required some extra hose and the pcv vacuum line enters the front of the carb which also required a different hose and routing. The carb itself is a beauty and runs strong unlike the POS Holley that it replaced. I took the advice from edelbrock and added another fuel filter between the steel fuel line and the carb inlet since I still run the original gas tank.I bought this also from summit
as a kit . The carb is matched with a performer intake.

 

I have an edelbrock and have no complaints for daily use. If I was racing all the time I would look at a Demon or even a good old double pump holley.

 

For a daily driver, go with the edelbrock. If you want something more for racing and 1/4 miles, go with a Demon or Quick Fuel carb. however, I would suggest going with something bigger then a 500 depending on your cam. I have a 650 on my 302. You can always jet the carb down if its too much.

 

i got an edelbrock on my car and i don't have any complaints with it. I don't race but on weekends sometimes at out local strip, and i cant complain about the carb not working For a regular get around car.

 

Why not a Demon for daily driving or you saying the Edelbrock is good enough?

I've always been partial to Holleys but I haven't played with anything other than Dominators.

 

Thanks Guys!

 

Running, you usually have to jet up with too big of a carb. 650 is big on a streetable 302. I have a very aggressive 331 and my Edelbrock 600 lets the motor wind all the way to 6200.

Overcarbing reduces vacuum signal to the carb, resulting in poor fuel atomization, poor throttle response, and less fuel being drawn out of the bowls for any given jet size. You can adjust a carb that's too big to try to tune out low-end throttle response issues, but it's difficult and not ideal for efficiency. The only exceptions to this are carbs that utilize annular boosters (like the Autolite 4100). Annular boosters need much less vacuum signal to properly atomize fuel, allowing you to overcarb a bit to gain top end flow without killing low-end throttle response.

A 500CFM carb will flow more if it needs to, it's not a limiting valve. 500CFM is plenty for a mostly stock or mild flat-tappet 302.