You’ve got questions. We’ve got answers — when we work with the Summit Racing tech department to help you tackle your auto-related conundrums. In this week’s Mailbag, we help a reader troubleshoot sluggish engine performance he’s experiencing when his Holley carburetor’s vacuum secondaries are activated. Q: I have a Chevy 383 stroker with a Holley 600 cfm vacuum
There is much to consider when choosing a carburetor for your vehicle. Airflow, choke style, and even the physical height of your carburetor will come into play. But what about the barrels? How do they work? And what type of secondaries do you want? Here are the basics you need to know about primary and
[portfolio_slideshow id=10444] If you ever have the chance to discuss engine tuning troubles with the legendary Jon Kaase, you’ll rejoice in his simple logic: “Most engine troubles are centered on spark or fuel—if it has the former, it is either getting too much or too little of the latter,” Kaase says. With help from the
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