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Topic: Engine Timing

in Forum: C3 Engines


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Engine Timing

Posted: 6/23/07 7:43pm Message 1 of 5
thargrav
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Huntsville, AL - USA
Joined: 3/4/2007
Posts: 17
Vette(s): 1977 Black on black
I have a quick question, hopefully for someone on line.
 
I just replaced the distributor in my 77 Vette with a new one from Jegs & I can set the timing by ear but the timing mark is nowhere near the pointer. And yes, I am clamped on #1.
 
Per the book, timing is supposed to be 8 BTDC. Is this with the vacuum connected or disconnected?
 
Thanks in advance, Tom
 
 



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Engine Timing

Posted: 6/23/07 7:52pm Message 2 of 5
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Adams' Apple
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20214
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
Always check base(idle)timing with the vac. dis-connected from the dist.
Perhaps your balancer isn't correct...the outer ring has slipped...


Joel Adams
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Engine Timing

Posted: 6/23/07 7:58pm Message 3 of 5
Okie Dude
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Eastern Oklahoma County, OK - USA
Joined: 1/3/2006
Posts: 1560
Vette(s): 1980 Black L48 T-Tops
Joel may be dead on here.  I went thru the one on the car and two from Auto Zone before I got smart and picked up an AC/Delco OEM balancer that was dead on.  They are a pain to change, especially if you change it without taking the fan out.  Pulling the fan is definitely the easy way.


Engine Timing

Posted: 6/23/07 8:28pm Message 4 of 5
thargrav
Former Member
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Huntsville, AL - USA
Joined: 3/4/2007
Posts: 17
Vette(s): 1977 Black on black
I thought of the balancer after sending out the email. I have the car timed by ear right now & it runs great. I'll pick up a vacuum gauge tomorrow & time the car by vacuum signal.
 
Thanks again, Tom



Engine Timing

Posted: 6/24/07 6:49am Message 5 of 5
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lukesvette
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HOWELL, NJ - USA
Joined: 5/18/2004
Posts: 6812
Vette(s): 1979, Targa Blue (72 Color), Pace Car rear spoiler, L88 hood, Dark blue factory interior, 525HP 406, HD 700R4, 370 gears,Steeroids, composite rear spring, TT IIs wrapped in T/A Radials.
Make sure you plug the advance line while disconnected Wink 


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in Forum: C3 Engines


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