initial timing?
- Thread starter goldie
- Start date
14* is a pretty good starting point for Chevies. A pretty good basic curve is 14* static with the vacuum advance disconnected & the line capped, maxing out at 36-38*, fully advanced by around 2300-2500 rpm, with between 10-12* vacuum advance.
Tommy
Tommy
Where should I set the timing on my performance engine?
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1981Regal said:
I'm sure that Arron builds & tunes great stuff and his setup will work great for drag racing, it's just a basic locked distributor. It works fine for full throttle only race conditions. If you plan on street driving at all other than to limp around looking for stoplight to stoplight races, ignore him. "Race distributors don't have mechanical advance". :shock: Other than a fully digital system or a full race setup that has been locked out, I've VERY rarely seen "race" units that didn't have centrifugal advance except for ones used with electronic timing boxes. MSD only sells one. "Vacuum advance is pretty much only there for part throttle economy". He couldn't be more wrong on that one... "I almost never use a vacuum advance on performance engines". It seems he doesn't really understand how they work & what they can provide.
He needs to read this. It was written by John Hinckley, a GM engineer:
Timing Mech vs Vac advance Good Read
This is a reprint from another board author unknown but wanted to share this with the group as there has been some recent discussions on this. As many of you are aware, timing and vacuum advance is one of my favorite subjects, as I was involved in the development of some of those systems in my...
Tommy
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