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Old 11-25-2008, 07:57 PM
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Want To Change 2barrel To 4 Barrel What Manifold

I HAVE A STOCK SBC 350 AUTO. WHAT !!MANIFOLD TO USE THAT' WOULD " WORK?? TO GO TO A 4 BARREL CARB FROM A 2 BARREL WITH NO MOD'S TO THE ENGINE?? JUST MANIFOLD AND CARB!! THANK'S

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Old 11-25-2008, 08:56 PM
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Stock cast iron intake and Quadrajet out of a boneyard.
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Old 11-25-2008, 09:27 PM
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What vehicle are you asking about, saying a stock 350 SBC leaves a lot of questions? A cast iron manifold and a professionally rebuilt Quadrajet might just be the ticket.

Vince
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Old 11-25-2008, 10:07 PM
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Quote:
Originally Posted by techinspector1
Stock cast iron intake and Quadrajet out of a boneyard.
No kidding, the engineering and price is hard to beat. There are factory aluminum spreadbore intakes out there too (if you want to add some flash). Hunt around the yard & you might get lucky and find a carb that's had new throttle bushings put in recently, who knows.

The aftermarket will brag about their model of intake making X more HP but for part-throttle torque below 3500 you can't beat it.
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Old 11-26-2008, 11:16 AM
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HEY GUYS! THANK'S FOR YOUR IN PUT. OK I JUST PURCHASE A 34 FORD' WITH A STOCK 350 SBC. HAS STOCK MANIFOLD WITH A 2 BARREL WAS TOLD A 1977 SBC. I WOULD LIKE TO PUT A ELDERBROCK CARB AND MANIFOLD' ON IT. DO I NEED TO CHANGE THE LIFTERS AND CAM ETC?? I JUST WANT TO USE A 4 BARREL ELDERBROCK 600 CARB. OR HOW TOO! WITH OUT TEARING THE ENGINE APART?? THANK'S
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Old 11-26-2008, 02:03 PM
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you will gain next to nothing for more power....

the 2V carb specific oem camshaft HP peak is about 4,000rpms and at that point there is roughly 325 cfm total going thru the motor....

mounting a way bigger 600 cfm carb, with way more cfm capability than is needed does not make more power....

if the 4V primaries are smaller than the present 2V total cfm,,,it may have a bit more "pep" driving normal due to higher Hg below the TQ peak....

do some investigating ,,,,it may well be a "sleeper" 2V motor combo build (most local stock car tracks are 2V only allowed) which a 4V will screw up!!!!
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Old 11-26-2008, 04:17 PM
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re:want to change 2 barrel to 4 barrel what manifold

Hi, this is deno. Do you want more HP. or do you want it looking new ? It sounds like you have the money to make it look good. Get the #s off the heads look up the intake and exaust of the valves size. If the intake is 1.94 you can install a 4 barrel carb. if it is just .20. less you can install a 600 cfm. Summit racing has a Edelbrock # EDL-20214 $ 657.95 for the intake ,carb and kit. If the car runs rich install smaller jets. It is easy to do. I had a 1957 Chevy 4 door wagon with a 307 2 barrel carb in 1975. I beat every car in Asbury Park NJ. The ones that raced me made me show my engine to them. Remember it naw the 57Thank you
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Old 11-27-2008, 09:37 PM
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THANK'S FOR ALL THE HELP GUYS!! I HAVE SOME CHOICE'S TO MAKE NOW' THAK'S AGAIN!!
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Old 11-28-2008, 12:00 PM
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If you intend to stay stock internally, and just want the look,
I would suggest an Edelbrock Performer (plain Performer, not RPM or AirGap)
and an Edelbrock 500 cfm electric choke carb.
The 500 (five hundred) has smaller primary barrels for efficiency.

Be sure to use manifold vacuum to your distributor can.

You will get a noticable mid-range boost,
excellent driveability,
good mileage.



plain Performer intakes should be pretty inexpensive since many people have removed them for the bigger intakes.
Buy a NEW Edel. carb.
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Old 11-28-2008, 03:04 PM
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Scot,
minor point:
the "boosters" on the 500 are what reduces the cfm....

both are the same throttle bore and venturi size on the 500 and 600
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Old 11-28-2008, 03:09 PM
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Quote:
Originally Posted by red65mustang
Scot,
minor point:
the "boosters" on the 500 are what reduces the cfm....

both are the same throttle bore and venturi size on the 500 and 600
Thanks I'll double check that. I might be mistaken.
I have a 500 that is smaller than the 600, I think. But it is several years old.
The 750 has all 4 the same size.

Anyway, the better atomization of a 500 would be a good idea.

Thanks
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Old 11-30-2008, 11:42 PM
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One other thing besides the ALL CAPS, if you're going looking for parts get the names correct. It's not "Elderbrock".... it's Edelbrock. Also get yourself one of the good books available on "How to build the Small block Chevrolet". Not only will this give you a good understanding on how the engine works but may you save money by not buying parts you don't need.
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