CCC distributor advancing without ECM
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Junior Member
Joined: Aug 2016
Posts: 6
Likes: 0
CCC distributor advancing without ECM
'82 fb lg4:
CCC distributor advances from initial 9° BTDC at idle to 22° at 2500rpm (total).
The ECM is unplugged and also a Non-CCC carb installed.
How is this possible? Distributor doesn't have weights.
curve is something like:
9° @ 800 RPM
12@1200
15@1500
18@1800
20@2000
22@2500
i don't understand. the ccc distributor doesn't have any signal to advance the timing, it should do nothing. am i wrong?
CCC distributor advances from initial 9° BTDC at idle to 22° at 2500rpm (total).
The ECM is unplugged and also a Non-CCC carb installed.
How is this possible? Distributor doesn't have weights.
curve is something like:
9° @ 800 RPM
12@1200
15@1500
18@1800
20@2000
22@2500
i don't understand. the ccc distributor doesn't have any signal to advance the timing, it should do nothing. am i wrong?
Joined: Jul 2000
Posts: 6,522
Likes: 92
From: Aridzona
Car: `86 SS / `87 SS
Engine: L69 w/ TPI on top / 305 4bbl
Transmission: `95 T56 \ `88 200-4R
Re: CCC distributor advancing without ECM
If you dig into the Helms service manuals, they go into some detail, there's usually a low speed section, and a hi speed section. A Delco module usually has a better backup system than aftermarket.
Joined: Jan 2005
Posts: 10,426
Likes: 497
From: Hurst, Texas
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Re: CCC distributor advancing without ECM
Alot of GM carbureted marine engines use the small HEI EST distributers running without any ECM input.
