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06-17-2005, 12:51 AM
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#1 |
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Registered User
Join Date: Jun 2005
Posts: 18
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Advanced timing??
My 350 is running at 12 degrees right now. I was just wondering if I could go further or not. If so how do I know when to stop, I should get some spark knock or something uhh?
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06-17-2005, 03:28 AM
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#2 |
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'68 C-20 396 CST CC
 
Join Date: Mar 2005
Location: Spokane, WA
Posts: 454
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I'm assuming you have an HEI?
Well, it's a by-ear thing. When the timing is really advanced you'll have the best idle but early pinging (detonation, spark-knock) will occur-usually under load as soon as you drive it. The trick is to find out what kind of timing allows for a smooth ide with NO detonation. There are more scientific measures to adjust your vaccuum advance unit on the HEI distributor to match the application (street/strip, towing, heavy mileage), but unless you're application is "bread-winner" I don't think we need that kind of attention. Good luck!
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68 C-20 396/TH400 CST Custom Camper NOW W/DISC BRAKES  01 Jetta Turbo Daily Driver  84 Yamaha Virago 700 - Alaska to Florida Via Maine & Mexico 
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06-17-2005, 08:52 AM
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#3 |
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Mike
Join Date: Jan 2003
Location: west chester pa
Posts: 2,473
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If you get to much timing you will get some pinging,and it can give you hard starts when the engine is hot.
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70'c/10, 71 suburban4x4 402bb, 72suburban 4/6 drop, 72k/5 4x4 blazer 4" lift 35 tires |
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