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07-02-2009, 07:18 AM
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#1 |
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Registered User
Join Date: Jun 2006
Location: Indiana
Posts: 4,859
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Timing Question
Stupid question. My cam is ground 4 degrees advanced, so when I read my base timing at 10 degrees, am I really at 14 degrees? If so, I may need to back off the timing a bit more.
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'70 GMC C1500 LWB Power disc brakes. WooHoo! Posi 6 Lug Dana 60 |
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07-02-2009, 09:32 AM
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#2 |
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On a budget like Fred Sanford
Join Date: Oct 2005
Location: Topeka, KS
Posts: 2,031
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Re: Timing Question
Nope, your base timing is still 10. Cam timing has nothing to do with ignition timing. When there is 4* advance ground into the cam, that means the intake centerline is 4 degrees less than the lobe separation angle. IE, if your cam's lsa is 110 degrees, your intake centerline is 106 degrees (110-4=106).
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'85 Silverado swb: 383 stroker, 10.5:1, vortec heads, 232/238 roller cam, RPM air gap, performer 750 carb, stainless longtubes, 3" duals/super 44's, T56/4.11 383ci build / exterior refresh thread '98 Camaro z28: 370ci twin turbo 370ci build '01 Tahoe LT 4x4: 5.3, longtubes/ory, magnaflow duals, custom tune....wife's DD Last edited by swb85; 07-02-2009 at 09:33 AM. |
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07-02-2009, 09:43 AM
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#3 |
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Registered User
Join Date: Jun 2006
Location: Indiana
Posts: 4,859
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Re: Timing Question
Well, that means I set the timing right anyway. Thanks.
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'70 GMC C1500 LWB Power disc brakes. WooHoo! Posi 6 Lug Dana 60 Last edited by ERASER5; 07-02-2009 at 09:43 AM. |
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