Not Ranked
I'm running a Holley HP series 750 DP on my 393. I'm using a Victor Jr. intake with Vic Jr. heads. After 3 hours on a Dynojet chassis dyno with the wide band sensor in my driver's side pipe, we learned the best jetting was 71's up front and 72's in back. My air/fuel mixture was a perfect 13:1.
The carb comes from Holley with 73's on all four corners.
The motor is so much more responsive and crisp, no black smoke out of the side pipes at all.
Scott, SPF#1230 / 393
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