94 s dime

iTrader: (10)

Just fired it up the other day, msd 6010, QuickFuel 750, no choke or anything. Starts up and idles great, if you blip the throttle it pops and stumbles and sometimes a flame pops out of the carb. The chip in the msd box is #3. Idles really smooth though... Not sure where to begin

331camaro

iTrader: (1)

what do the plugs look like? what size jets are you running? bowl levels ok?

Pop N Wood

iTrader: (1)

Not to be a smart *** but you need to tune your carb.

94 s dime

iTrader: (10)

a little update, changed the plugs got the car hot, took it out and beat on it, cleaned it out. its a little fat, but the main issue is, when im stalled up and mash it to launch it stumbles. jets are 74/84, 4.5 power valve, 31 squirters i believe. fuel pressure is about 6 psi, bowls stay full. was having a problem but cleaned the brand new carb out and fixed alot of it. i had it at the track today and netted a 7.44@93, but the carb is still stumbling. just curious on what other stock ls1 are running jet, squirter and power valve size wise.

speedtigger

iTrader: (16)

You will likely find the car will want #37 or #40 squirter discharge nozzles front and rear.

Make sure you get a wide band and lean the idle to at least 13.5:1 so it does not fowl the plugs. 14:1 would be better if it will take it. However, be prepared for it to be fussy when cold.

LSXNV

iTrader: (1)

Most backfires through the carb indicate a lean condition. I would check your pump arm and spring to make sure you are getting fuel out of the squirter as soon as you crack the throttle. You can play with the gap to tune your hit.