C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old Apr 5, 2005 | 11:52 AM
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Ibuyvettes's Avatar
Ibuyvettes
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Default Help from 88'ers

My ignition timing label is missing, what is the timing supposed to be set at? and where do you disconnect the est, and what is the timing connector?
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Old Apr 5, 2005 | 01:18 PM
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ls5454
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I only know '90:

6 deg BTDC,
single wire between ECM and dsistributor (near brake booster),
and the in line connector on the EST wire.
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Old Apr 5, 2005 | 02:17 PM
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The timing spec for all C4's, that CAN be set (L83s and L98s) is 6 * BTDC.

RACE ON!!!
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Old Apr 5, 2005 | 07:56 PM
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Originally Posted by CFI-EFI
The timing spec for all C4's, that CAN be set (L83s and L98s) is 6 * BTDC.

RACE ON!!!
I have an 88 with pre cats eliminated and spark plugs gaped at ..045
I run 8 deg before tdc and love it

Jack
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