Effects of carb too big???

[junebug]

What will happen if u get a carb that is too big...and how big are most ppl running with open motors...usmts type...I had a carb guy recommend a certain size for my engine and it seemed really big but was just curious if it was close to what others were using

[Dirt_Buster]

How much power can you put down. Your carb guy won't usually understand what you race on to be honest. You need a carb guy that can tune the motor to the track and car you have. The longer you can keep that pedal throw the better you'll be.

[MasterSbilt_Racer]

Too big can cause lazy throttle response.

[junebug]

I know it seems like almost everyone uses a 750 but there saying I need quite a bit bigger...I've had 2 different carb companies tell me the same thing...I have a 383 670 hp and turn it 8200 ....they say I need a 950

[JustAddDirt]

if you are a drag racer that will be fine.

for throttle response and drivability you probably need a 750-800CFM

for wide open power, you will probably get a few more ponies out of a 950, but you will sacrifice drivability, and throttle response for it.

I have a 15º 426c.ci with a smaller carb that they are recommending for you.
might talk to Braswell.

[50j]

Call JDR, Braswell, or Stealth and talk to someone that does a lot of USMTS carbs. Advertised flow numbers aren't good for comparison and someone with a lot of experience building them will know what you need.