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Message: <blockquote data-quote="Chris Stephens" data-source="post: 1466512" data-attributes="member: 24095">The distributor is a Hyperspark from Holley. It's fully locked out and doesn't have any springs or weights. The Holley Sniper system actually controls the timing. A sensor in the distributor picks up the signal and sends the signal back to the Sniper. The Sniper then sends a perfectly...timed signal to the CD box, which then tells the coil to fire. Similar to an MSD box, except with the Sniper doing the controlling of the timing of the spark. One of the features of the Sniper is "static timing". I can use the handheld to set the timing to any degree I want and it will hold that advance. I set to 20* and it stays there even when you rev it up. When you set the timing up the first time, they give you a little plastic cap that gets you pretty close. Then you rotate the distributor by hand to get it really close. But then you can get it dead on by changing a setting called "inductive delay" in the Sniper to account for little variations in the coil, wire length/type, plugs, etc that tend to show themselves when the time between firing is very short (so when the engine is at higher RPM). Very neat way of doing it (to me at least, it's probably standard in the OEM world). I spent a half hour getting mine dead on. When the Sniper commands 20*, that's what the engine shows on the timing light at any RPM. Just more confidence so when I'm running 93 pump gas in the 11:1 engine (right at the edge), my commanded 34* is actually 34* and not actually 36*, where it starts detonating lol.</blockquote>