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12-23-2000, 04:13 PM
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#1 |
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Registered User
Join Date: Dec 2000
Location: Arkansas
Posts: 47
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timing advance
I have a '85 Silverado with a 305. do these trucks have a electronic timing advance, or vacuum timing advance?
------------------ '71 Custom 10 lwb
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'71 Custom 10 lwb, 327ci, TH350 '49 chevy 3100 5 window truck. 235 six cylinder. 3 speed on the column. |
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12-23-2000, 11:22 PM
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#2 |
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You get what you pay for
 
Join Date: Dec 1999
Location: Cherryville, NC
Posts: 4,798
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They have both mechanical and vacuum advance. They also have what is called an ESC (Electronic Spark Control). The only thing the ESC does is control spark knock. You notice the distributor plug has 4 pin plug on it.
It also has a knock sensor in the engine block (in front of the starter). When the knock sensor detects spark knock it sends a signal to the ESC contoller (mounted behind the glove box, above the heater). The ESC will retard the timing to stop the spark knock. As a side note, I have removed all that mess on my 85 C10. I installed a MSD Pro-Billet HEI. Hope this helps, ------------------ Mike 1985 Chevy C-10 Mike's 73-87 Chevy Pickup Site
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Mike 1985 Chevy C-10 |
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12-24-2000, 01:45 PM
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#3 |
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Account Suspended
Join Date: May 2000
Location: IL
Posts: 0
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Thats what I'll be doing on the '81 when the 305 blows, or I get tired of it and use it for demo usage.
This ESC is odd.... |
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Linear Mode
