I know this may sound biased but don't take my word for it, ask any major engine builder. They know there's a ton of horsepower to be had in a good carburetor.
This is especially true in stock class racing where most guys build there own stuff. I am not telling you this to sell you a carb. I have more work than I can do now.
I just want you to be informed. I spend allot of time on the dyno developing carbs for stock class racing and the difference between a purpose built carburetor and an off the shelf or junk yard item is huge.
If you can afford it, by a professionaly built carburetor. By professoinaly built I mean a carburetor that has been developed
for circle track racing.
This carburetor will have been dyno tested and checked for A/F ratio as well as horsepower and torque production.
I have seen carburetors have a perfect air/fuel curve but not make any where near the horsepower and torque they should. That is why it is imperative to have a carb dyno tested.
CHASSIS
As for chassis you want your chassis as free as you can get it. Any time you are racing a horsepower limited class you need to free your car up as much as possible and be as fast as you can from corner entry to corner exit this is where races are won.
I would venture to say that most of the cars in your class are very close on the stopwatch down the straightaway, but if you clocked the front runners they are probably 1/2 second or faster through the corners
5 MPH faster through the corners is worth about 15MPH down the straightaway because the momentum is not lost.
There is allot more to this... I urge you, if you plan on staying in racing... I think I can speak for most of us once you're in you never leave. You may take a hiatus from time to time but racing will alway call you back! It is the sickness we live with, I regress.. anyway do yourself a favor and attend a chassis school it will be the best money you have ever spent.
I attended when I first started racing and I promise it was the best racing dollar I have ever spent. You cannot spend this minimal amount on any hard part that will make you as fast as the knowledge gained will.
I will get off my soap box now and give someone else a turn
Jimbo
www.jimboscarbs.com
P.S Bill Gordon has an excellent chassis school that is geared toward new racers and entry level classes that is excellent for a minimal price and he is a great guy you will not be dissapointed.
www.thedirttrackracingschool.com