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?
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.
[ This Message was edited by: fxcomet on 10/22/02 7:18am ]
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.
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!
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.
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.
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