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Old 10-21-2002, 05:53 PM   #1 (permalink)
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302 with 2 carbs vs 1

I've seen several cars with this but have never bothered to ask:

What's the difference (performance-wise)between a ford 302 with 2 carbs on it vs a 302 with only one? Do the 2 carbs really make a difference? Other that rapid gas consumption, what are some of the pitfalls of a dual carb setup on a small block? Advantages?
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Old 10-21-2002, 07:15 PM   #2 (permalink)
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302 with 2 carbs vs 1

Disadvantages are they're a pain to tune and are usually slower than a good well tuned single four. Advantages are that they look killer and with an experienced tuner can be made to run well. I had a cobra replica that ran low 12's with a 289 and 2/4's. The grin factor was well worth the monthly tuning hassles.

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Old 10-21-2002, 08:00 PM   #3 (permalink)
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302 with 2 carbs vs 1

Here it goes! If an engine is built with performance parts good enough to make a difference, it usually will perform better with 2 fours. My stock 429SCJ prefers a pair of 850's to a single according to the track. A 302 really would prefer 2 two's instead. Volumetric efficiency would dictate that. I'm biulding a 306 for a drag car that will have 2 850's on it. It's worth about 60 HP over a Victor but it moves the power range way up. Hard to make the throttle cable look nice too.
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Old 10-21-2002, 08:32 PM   #4 (permalink)
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302 with 2 carbs vs 1

Yep, parts capable of taking advantage of the extra air/fuel capacity are the key. My impression was he was leaning more toward street driving and consequently a milder state of tune. For all out rompin', I'll vote for the 2-fours!
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Old 10-21-2002, 10:53 PM   #5 (permalink)
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302 with 2 carbs vs 1

Are we talking the low profile variety or a tunnel ram here? Hot Rod did a manifold test a while back using a 350 Chevy. Ran everything from a 2x 4 to tunnel rams. The 2 x 4 was the best looking, but one of the worst performers of the bunch. For a low profile - if it's cool and cruise you're after and you don't mind working the bugs out, it's OK. If you're really after performance, you'll want good heads and a Victor highrise single 4. IMHO. Tunnel rams can make power if they are tuned correctly and (as stated) you have the motor guts to make it go.
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Old 10-22-2002, 12:38 AM   #6 (permalink)
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302 with 2 carbs vs 1

There was an article in Car Craft a while back where they compared some different intakes and headers on a 345hp 302 crate motor.They compared the old Edelbrock F-28 with dual 500cfm performer carbs against a performer rpm and 625cfm road demon.The dual quads made 15 hp less at peak but cranked out 360hp@6000 and 339ft/lbs torque@4200 outdoing Fords rating of 345hp.Apparently this intake has been re-released and is a low profile intake.
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Old 10-22-2002, 05:06 PM   #7 (permalink)
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302 with 2 carbs vs 1

What kind of "performance parts" would also be necessary for this setup?
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Old 10-22-2002, 05:21 PM   #8 (permalink)
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302 with 2 carbs vs 1

Hiflow heads, cam, headers, ignition...the "usual"
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Old 10-22-2002, 07:37 PM   #9 (permalink)
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302 with 2 carbs vs 1

yeah, but when you open your hood and see this

[img]http://groups.msn.com/_Secure/0MQCzDAoRNJYEgrRuglTa88spOV5xS!6DivI7g5drba4eMgjd9 VCrgJ!PUGTigh7K*zf6BpITDJYdkbnPpEf32A/Hq35.jpg[/img]

people notice

I ran this on my 289 for abit, it was to much for it, but the FUN FACTOR was there for sure.

Rick
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Old 10-22-2002, 07:45 PM   #10 (permalink)
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302 with 2 carbs vs 1

We're leaning more towards a single top & a 4500 now. Edelbrock heads & a nasty flat tappet. The 302 is an in-between until we get the 408 done & the kid doesn't wanna spend dough on an intake, the TR is $100. They do look impressive though
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