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Need Dwell and Timing specs

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Old Jul 15, 2008 | 10:38 PM
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Default Need Dwell and Timing specs
I can't find my Shop manual I need the Plug, Dwell and Timing specs(and any other specs i can't think of) for my 68 427/390 4sp.

THANKS
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Old Jul 15, 2008 | 10:44 PM
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Originally Posted by Douglas Mariani
I can't find my Shop manual I need the Plug, Dwell and Timing specs(and any other specs i can't think of) for my 68 427/390 4sp.

THANKS
Dwell on Chevy engines is 28-32 degrees. Set it for 29 or 30 to allow for wear.

Timing will be specific to your engine and year. Sorry I don't know it.

cc

Oops, forgot plug gap----.35

cc
Last edited by CCrane65; Jul 15, 2008 at 10:46 PM. Reason: Forgot plug gap
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Old Jul 15, 2008 | 11:23 PM
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Basic timing is 4 degrees BTDC.
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Old Jul 16, 2008 | 03:15 AM
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Originally Posted by CCrane72
Dwell on Chevy engines is 28-32 degrees. Set it for 29 or 30 to allow for wear.

Timing will be specific to your engine and year. Sorry I don't know it.

cc

Oops, forgot plug gap----.35

cc
Originally Posted by Jud Chapin
Basic timing is 4 degrees BTDC.

Thanks is that with vacuum advance connected or disconnected
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Old Jul 16, 2008 | 07:02 AM
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Originally Posted by Douglas Mariani
Thanks is that with vacuum advance connected or disconnected
Disconnected. You're welcome.
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Old Jul 16, 2008 | 07:15 AM
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The vacuum hose should be plugged after disconnect from the distributor.
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