quote:What am I missing? I've searched the forum and can't find what I'm missing.
On some Panteras, the leverage on the Holley throttle shaft does not allow full throttle; the secondaries never fully open. All the vendors have the link and bracket extension.
Good luck with any Holley Street Avenger on a performance engine. THe first thing you'll badly need is a secondary spring tuning kit and a quick-change secondary diaphragm cover- both Holley parts. Holley's dyno guy told me that's an emission-certified carb and it will take LOTS of tuning to get it to work even average... which after 3 months and changing everything but the throttle base, I couldn't. Want another one with 18 tuning miles on it from new?