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01-29-2007, 03:56 PM
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#1 |
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Senior Member
Join Date: Dec 2005
Location: Humble, Texas
Posts: 262
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Timing Question?
ok i have a 1972 Chevrolet with the Stock 350 with a Qjet. intake heads block and all i do have headers in it as well as the edelbrock dress up kist (which i know does not make a diff)but the guy who had the truck before me said it has a mild cam in it im wondering what the timeing set should be on it can anyone give me this info
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Redneck Rampage 1972 Chevrolet C-10 LWB 350 1972 Chevrolet K-20 LWB 502 LiFtEd |
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01-29-2007, 04:20 PM
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#2 |
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Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
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Re: Timing Question?
What are you running for timing now? Does the truck have an HEI distributor, or is it still the older points style dizzy?
I usually start my engines at a 10 degree intial timing setting and then work my way up from there. I purchased a timing light with the advance feature on it and since then I now set my timing at a "TOTAL ADVANCE" number of 35 degrees or in that area. I also set my idle adjustment screws with a vacuum gauge, rather than just listening to idle speed change, to get the best idle mixture set up for daily driving. |
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01-29-2007, 04:25 PM
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#3 |
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Senior Member
Join Date: Dec 2005
Location: Humble, Texas
Posts: 262
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Re: Timing Question?
yes i have HEI dis in it and i have an older timng light one that hooks to the pos and neg of the batt then a lil spring that goes on the tip of the plug then the other end into the boot then another wire that connectes to the spring from the light right now its at 0 and i dont have a tach to find out what the RPMs are set at i would like to get my timing right and then the idle right
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Redneck Rampage 1972 Chevrolet C-10 LWB 350 1972 Chevrolet K-20 LWB 502 LiFtEd |
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01-29-2007, 07:07 PM
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#4 |
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Senior Member
Join Date: Oct 2006
Location: Edmonton Alberta
Posts: 458
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Re: Timing Question?
as much as this has been a thread issue before, i still say the balancer marks are never on the money and power timing is the best for your application.
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01-29-2007, 09:46 PM
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#5 |
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Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
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Re: Timing Question?
With what you have for a timing light, I would pull the vacuum hose and plug it, set the timing at 10 degrees BTDC, put the vacuum hose back on and then drive it. The next thing that I would do, is to advance the initial timing to 12 degrees and drive it again. Listen for spark knock or pinging under acceleration, also look for engine "Run-On" when you shut it off. I would expect that you will settle around the 12 to 15 degree timing area. This will give you a good operating area and a decent performance. Take time to mark your timing marks on the balancer so that it is easy to time the motor, the balancer is fine at this point.
If you decide on a different timing light, at some time, Sears sells an excellent advance unit for a really decent price. Last edited by piecesparts; 02-09-2007 at 07:12 PM. |
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01-30-2007, 12:35 AM
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#6 |
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Chief Honcho In Charge
Join Date: Aug 2006
Location: Bentonville AR
Posts: 970
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Re: Timing Question?
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1992 1500 4x4 Shortbed 1984 Ford F250 Supercab Longbed 6.9L Diesel 1972 K10 Cheyenne Super Fleetside Short Bed - 350 - A/C 1971 VW SuperBeetle 1960 Wife 1984 Son 1986 Son 1989 Son Previous Trucks 1967 C10 SWB (1980-1981) 1971 C10 LWB (1998-2004) |
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02-08-2007, 09:07 PM
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#7 |
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Registered User
Join Date: Apr 2003
Location: NB
Posts: 3,367
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Re: Timing Question?
Good info..keep it coming...can never know enough about the timing
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1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD |
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