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LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

MSD Opti swap

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Old 08-18-2013, 07:12 PM
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MSD Opti swap
About to swap out the optispark on my 97. Upgrading to the MSD with an adjustable timing switch. Any suggestion? How does the timing adjustment help?
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Old 08-18-2013, 07:17 PM
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Re: MSD Opti swap
It doesn't help one bit. In fact it only confuses things worse and makes diagnostics extremely difficult. There is no reference point on the screw so you're basically adjusting it blindly.

Not a good upgrade.
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Old 08-18-2013, 08:04 PM
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Re: MSD Opti swap
PS - Don't forget to loc-tite the MSD rotor screws. The rotor tends to fall off, just like the factory unit.
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