[matt1190]

I just got a 670 Avenger, and I plan on setting it up in a couple days. Does anyone know which jets sizes/sec.springs are recommended for a 351w. I've asked Holley.com but theyre unresponsive.

I have inherited quite a collection of jets...however, some of them have a wrench style head to them rather than a flathead screwdriver setup. When comparing the two, the numbers dont correlate with the diameters. Is there a known ratio between the two jets?