I hooked up a NGK Air Fuel ratio guage to my 500 wedge motor with a Holley 80531 850 carb (vacuum secondary) The numbers I got were:

Idle - 13.5
Cruise - 12.5
Light throttle - 13.5
Decelerate - 11.5
WOT - 13.5 dropping to 12.5 as the secondaries open

Do these look like good numbers? This carb replaced an Eddy 800 and seems to run pretty good right out of the box.
Thanks for all comments


68 Charger R/T 68 Dart G/T Convert 11 Challenger SRT