Best Carb CFM for a 302?

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RocketFoot

Stangin' ain't easy but somebody gotta do it!
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Just wondering what carb I should start shopping for...My engine is a 302 bored to 306 with 289 heads for better compression.  I'm not out drag racing or anything, just want something that starts easy and runs good! 

Google is all over the board...500, 600 or 750 CFM's?  Brand is secondary, I mainly need to know what flow is best for now!

 
Although you pick up a little compression with the 289 heads they have smaller intake valves and more restrictive ports. 302 intake valves are 1.78" diameter and 289 intake valves are 1.68" diameter. Exhaust on both are 1.45" diameter.

The best Ford produced heads that are somewhat available are the GT40P heads, a little better compression than the basic 302 heads and a little larger intake valves, plus better flowing.

https://lmr.com/products/what-are-gt40-heads-mustang

If it were me, I would go with the 600cfm Summit carburetor

https://www.summitracing.com/parts/sum-m08600vs

 
As Don said, the Summit 600cfm carb is a good choice. The Slayer and Brawler series from Quick Fuel/Holley are also good choice and have a lot of adjustability. The GT40P heads are a step up but, spark plug placement make changing the plugs near impossible with headers in place. Ford unfortunately never made a real good production small block head, unless you count the Boss 302 heads. Chuck

 
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