What Holley 2 barrel for 307 V8? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

SWINGSAX68 · 07-13-2011, 02:31 AM

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!!!!

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.

prostreetC-10 · 07-13-2011, 09:32 AM

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.

crazy longhorn · 07-13-2011, 10:11 AM

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

prostreetC-10 · 07-13-2011, 10:22 AM

Quote:

Originally Posted by crazy longhorn

That 500 cfm 2 brl is a lot of carb for a stock 307,

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!

FLDBRED · 07-14-2011, 06:50 AM

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!

**Captainfab** · 07-14-2011, 11:44 PM

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

Quote:

Originally Posted by FLDBRED

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!

prostreetC-10 · 07-15-2011, 10:01 AM

Quote:

Originally Posted by FLDBRED

with a small 4v carb you will get BETTER milage than the 2v.

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.

1972RedNeck · 07-15-2011, 10:11 AM

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?

cdowns · 07-15-2011, 01:13 PM

rochester 2V are nice easy to use thrifty on gas

FLDBRED · 07-15-2011, 08:28 PM

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.

07-13-2011, 02:31 AM	#1
SWINGSAX68 Now the others dig........ Join Date: May 2002 Location: San Antonio, TX Posts: 1,520	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!!!! 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. __________________ 68 Chevy C10 Stepside Black Primer 78 GMC Longbed White 09 Chevy Silverado Shortbed Granite Blue *LOOKING FOR A 67 4 DOOR IMPALA!!!Just like Sam and Dean Winchester!! 'Cause Mustangs are for p^#$ and you can fit a body in the trunk of a 67 Impala* MEMBER OF THE DRUM BRAKE CLUB Bachelor of Music in Jazz Studies Texas State University-San Marcos, TX Certified Music Educator I hope Mom is up there watching and being my Guardian Angel "I've got a fever.....and the only prescription.....IS MORE COW BELL" -The Legendary: Bruce Dickenson "F#$@ 'em up!!!!!!" -The Legendary: Rogelio Escobar TRUCKY LINKS** http://67-72chevytrucks.com/vboard/s...d.php?t=457750 http://67-72chevytrucks.com/vboard/s...d.php?t=461184 http://67-72chevytrucks.com/vboard/s...d.php?t=472848 http://67-72chevytrucks.com/vboard/s...d.php?t=417541 http://67-72chevytrucks.com/vboard/s...d.php?t=477788

07-13-2011, 09:32 AM	#2
prostreetC-10 My Carbon Footprint Join Date: Oct 2008 Location: Orygun Posts: 5,527	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. Attached Images __________________ A quick "pedalfest" *Still getting loose (carb test)* 496 Initial fire up video!

07-13-2011, 10:11 AM	#3
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,403	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 __________________ 69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....

07-14-2011, 06:50 AM	#5
FLDBRED Registered User Join Date: Jun 2009 Location: CENTRAL,NJ Posts: 586	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!

07-15-2011, 01:13 PM	#9
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: What Holley 2 barrel for 307 V8? rochester 2V are nice easy to use thrifty on gas Attached Images __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

07-15-2011, 08:28 PM	#10
FLDBRED Registered User Join Date: Jun 2009 Location: CENTRAL,NJ Posts: 586	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.



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