Is a 750cfm holley carb too much for a 302?? I was told a 600 would work better??

 

stock 302? yes.

 

Bigger carbs dont necessarily make more power... you have to be able to burn the fuel or wash your cylinder walls down with gas which isnt a good thing.... To give you an idea, im running a 650 on my engine... see below...

 

700 is about the most youd ever wanna put on a 302, and that would have to be one hell of a beast in order burn that much gas.
For a mostly stock 302 a 600 is about the best.
-P.

 

Yes!!! Well, you guys helped me get one problem figured out. When You first take off, the car seems to bogg down a little at first. I assumed the carb needed tuned. I was telling a buddy of mine and he said it's probably due to the amount of fuels it's dumping.

 

A 750 won't bog a 302 because of the amount of fuel...they can be leaned out to get the right fuel/air mixture. The bogging is a result of a loss of air velocity due to the oversize bores. Basically, the air velocity drops and the fuel can't stay in suspension. The reverse is also true. A 600 can be tuned to provide as much fuel to the engine as a 750.

For a 302, you need to be turning serious rpm's to use up a 750...8500 rpm, give or take. A 600 provides enough air to achieve 6800 rpm or so (both depending on the efficiency of the heads, cam, intake). A 500 is great for a stock 302, but a 600 is pretty much optimum on a mild 302.