i am running a 347 with stock 853 heads with no porting. i am running an ls6 intake and stock throttle body on ngk bp7efs (3526). i have the nx lightning noids with a shark nozzle running the 46/78 pills for a 200 shot. car had about 10.4-10.6 a/f on a couple passes so i went up to a 46/88 pill and the car didnt get any faster and air fuel stayed in the sameish range. i ended up pilling the fuel to a 44 and the car went to 10.2 a/f.. i am confused and wanted some insight and help on this please!


if i left out any important info please ask...

 

the placement of the nozzle affects a lot. Check that and check that there is no debris in your fuel filter/ solenoid filter

 

which lightning solenoid are u using?
if it is the 15100L, it only has a .063 orifice...
the solenoid would be maxed out at this point...