What Holley 2 barrel for 307 V8?
 

Hey Guys!!!

Thinking of going with a Holley 2 Barrel of which type im not certain. I run a stock 307 with an aluminum chevy 2 barrel intake. Im not into performance much but would like a bit more juice. I was told that 2 barrel Holleys are what i may be looking for. ANY ADVICE IS GREATLY APPRECIATED!!!!:chevy:
Also Im going to run a 200-4r this is all dependent on if the Holley TV cable kit is available for 2 Barrel linkages. Calling Bowtie ODs manana. :)

Re: What Holley 2 barrel for 307 V8?
 

Your choices are very limited which just about narrows it to a Holley 500 cfm list 4412. Man....I just sold a cherry one a couple of days ago! You may need an adapter depending on whether or not your intake is for Holley or Rochester.

Re: What Holley 2 barrel for 307 V8?
 

That 500 cfm 2 brl is a lot of carb for a stock 307, it will work, but IMHO, you may be better suited to a 350 cfm version. If you are adding headers/duals, camshaft ,ect, then yes I would go with the 4412;) crazyL

Re: What Holley 2 barrel for 307 V8?
 

LOL.....wow, I glazed over the 307 part. If that is an even close to stocker, you would want the 7448 Holley in a 350 cfm. It will have straight leg boosters which are more forgiving than the downlegs in the 4412. I had a 307 in my first car which was a 69 Chevelle. Car was cherry but the horsepower was a little more than my lawn mower! Thanks for catching that crazyL!

Re: What Holley 2 barrel for 307 V8?
 

I know you were asking about a 2v carb but since you are going to run the 2004r you might want to consider the 4v route.You can pick up a manifold for next to nothing and with a small 4v carb you will get BETTER milage than the 2v.All the brackets for the 2004r swap are readily available and with a good HEI you would have a heck of a nice little package!:chevy:

Re: What Holley 2 barrel for 307 V8?
 

I agree......A vacuum secondary 4bbl is only running on the front 2 until you put your foot into it.

Re: What Holley 2 barrel for 307 V8?
 

Boy I'm not so sure I would agree with that. Of course the exact 4 barrel you compared with what 2 barrel makes a huge difference but guys seem to think that the front primary barrels of a 4 barrel are just like a 2 barrel. Not the case at all. This is why the SAE hg testing numbers for 2 barrels differ from 4 barrels. The signal to a 2 barrel is very different than the signal to the front of a 4 barrel. Runner configuration is also different on a 2 barrel intake and is designed to maximize fuel distribution for only 2 barrels. The 4 barrel intake does not do this. If we are talking ONLY fuel economy, I'd put my money on the 2 barrel for gas mileage and better throttle response.

Re: What Holley 2 barrel for 307 V8?
 

So what about my setup? I have this adapter plate with a 500 AFB carter on top. Would it be better than a 2 barrel for economy?

Re: What Holley 2 barrel for 307 V8?
 

rochester 2V are nice easy to use thrifty on gas

Re: What Holley 2 barrel for 307 V8?
 

Just basing it on my own experience,when ever I swapped out the 2v carb and manifold for a 4v set up on a stock motor,it always seemed like I came away with not only more power but also better mileage!But those 2v carbs were in pretty bad shape by he time I swapped them.