Tuning a Holley 4150...?

[Hertzdaddy]

Originally Posted by longbed67

Yes I modified the carb for a blow through setup... I know how to set the idle circuts, I guess I should be more specific with my questioning at what rpm/throttle position do the main jets and secondary jets work in. And I will be running an innovate wideband as soon as I finish wiring it with data logging as I tune, but I still live by plug reading.

IMO, plug reading is good up to a point but the clean fuel we have today doesn't leave much to read once the tune gets close. An A/F meter is a good tool for the last 10th of the process, especially with data logging.