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Author Topic:   witch carb?
racer17j
Member
posted October 07, 2002 11:03 PM
i'm looking at running a 360 mod class next year rule is 360 cid 9:1 comp and you have the option of carb must be 4412 or 500 cfm to match engine . i currently have a rochester 2g from speewday and was wondering if it would make a big difference performance wise to run one or the other


KPLugnut
Member
posted October 08, 2002 05:24 AM
If the 4412 has to be stock and unmodified, and the 2G has to also be stock, it has been our experience thru dyno research that there will be VERY minimal difference from one carb to the other. You're talking only a couple HP. The difference will be in where the power might be, and the fuel curves (which affect throttle responsiveness as well as top end).
The benefits of the 4412 will be in tuneability. A Holley is more easily dialed in to a greater variety of motors as compared to the 2G's which are more "finicky" and some don't like one motor but seem fine on another...I know, weird isn't it? :-).
Your 2G from Speedway is stock, and its fuel curve (and circuit work) is unaltered. It is merely a stock rebuilt piece.
Let us know a bit more of the specific carb rules (work that is or isn't allowed) and I can help you make a better decision.

Kinetic Performance

racer17j
Member
posted October 08, 2002 10:55 AM
they have to be unaltered. i bascily was wondering if it would be worth it to spend another 200+ on a carb if mine would not hurt me at all.this one has never let me down so i'd like to stay with it unless like i said it would hurt me drasticly because i think just about everybody is on 4412 but a couple cars now


KPLugnut
Member
posted October 08, 2002 12:15 PM
You could try staying with what you have, get it dialed in like that, as well as the chassis, and then if you're getting beat bad or something, a carb change may find a little power, but if you're getting beat real bad, it could be HP needs to be found elsewhere. I won't push you either way, but the masses are going with the 4412's because you can do more to them and they'll still "appear" stock. They'll also respond better to these undetectible modifications.
That, and parts and cores are easier to find and cheaper to buy.
But either way, let me know if I can help with either the carb you have (2G) or a Holley. You won't find more competitive pricing or service for any carb you choose.

(sorry, the salesman came thru there for a moment)...LOL!

KPLugnut

madmodshoe
Member
posted October 08, 2002 05:52 PM
kplugnut
email me your e-address
I am wanting to "stealth" a 4412 to run some big paying shows
madmodshoe@aol.com


KPLugnut
Member
posted October 08, 2002 07:08 PM
Madmodshoe,
You've got mail....:-)


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