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11-12-2011, 10:17 PM
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#1 |
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Registered User
Join Date: Apr 2009
Location: Haddam CT
Posts: 51
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Dwell meter
Ok its been way to long since I used my dwell meter. Its a mac tools meter and it has a green clamp and a black clamp. I cant remember what goes where.
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11-12-2011, 10:56 PM
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#2 |
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Registered User
Join Date: Aug 2009
Location: Alden NY
Posts: 2,705
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Re: Dwell meter
Black to a ground and the green should go to the negative terminal on the coil that goes to the points. Mine is red and black. Dwell on a V8 is 28-32 degrees at idle speed, I believe.
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1961 C1 Corvette 1959 El Camino 350 TPI, 9" 4 w disc 69 Blazer K5 - sold July '20 2021 Durango RT 5.7 |
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11-12-2011, 11:06 PM
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#3 |
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laying low
 
Join Date: Mar 2001
Location: Searcy, Ark. USA
Posts: 13,119
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Re: Dwell meter
That's correct.
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Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross |
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11-12-2011, 11:25 PM
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#4 |
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Registered User
Join Date: Apr 2009
Location: Haddam CT
Posts: 51
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Re: Dwell meter
ok thank you very much. 28-32 is correct.
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11-13-2011, 12:13 AM
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#5 |
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Old Skool Club
Join Date: Jun 2001
Location: Benton, AR "The Heart of Arkansas"
Posts: 10,880
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Re: Dwell meter
I always went with 30 degrees, adjusting the dwell angle as it ran. Get one of the 1/8th inch allen tools that are mounted in a spring extension to a screwdriver-type handle....assuming you don't have one. That's the nice thing about the "window" in the distributor cap...so you can stick the tool in and adjust your points.
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Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was. |
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11-13-2011, 12:27 PM
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#6 |
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Registered User
Join Date: Apr 2010
Location: So Cal
Posts: 1,423
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Re: Dwell meter
Always set dwell to the low side of the dwell range they give you.
The plastic or fiber rubbing block will wear down and decrease the point gap, which will show as an increase in dwell reading. The new points have a rubbing block with sharp corners that will wear down and polish smooth after a few hundred miles. The distributor specs say .019" gap for new points. After a few hundred miles the rubbing block will wear down to where the gap will be closer to .017", which is where they say to set Used points. The point block will wear very little from that point on in its life. A little grease on the cam will help.
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'67 GMC 2500, 292, 4spd, AC |
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