Carb Issues?

[wedgehead]

As I was making a pass in my car last weekend I got out of shape at about 100 ft out and had to peddle it back into to shape. As I regained control I noticed that the car picked up power as I lifted my foot during the rest of the run. When on the floor it ran good but as I lifted the accelerator say a 1/4 in. the car seemed to pick up speed. Does this mean that the carb is too large or may be too rich, too lean or what? Help as I would like to resolve this issue by the weekend. May be the last race day til next season!!! Wedgehead

[RacerHog]

Check to make sure the throttle plates are straight up and down at wide open throttle. Adjust if it isn't....

[Slingshot383]

Sounds like low fuel level, low fuel volume......a lean issue at high rpm, fuel curve isn't matching engines requirement.

[wedgehead]

I'm running BG 280 on a 416 with a 1050 Dominator. Also running the BG regulator and running 8 lbs of fuel pressure. Also 1/2 in braided fuel line from pump to the reg. Then #6 from reg to carb. Motor runs 6.50's in 1/8 on motor and 6.0's on 175 shot of NOS. Wedgehead

[Slingshot383]

You could still have a fuel curve issue with the carb, the idle circuit could be fine, while the mains don't allow enough fuel at the top end.

[RacerHog]

I'm going to say thats to much carb for your 416.....

But dont you just love all that bottom end from that 416?

[tubtar]

I know LA strokers like them some carb , but that sounds like a lot to me.

[toad490]

I've used that method to jet my Harley. I find a long straight and accelerate full throttle back off a hair and if it picks up drop down jet size untill that stops. I would try it with yours before changing carbs.

[John Kunkel]

By lifting the throttle you're decreasing the airflow through the carb which it seems to like. Carb too big or jets too lean.