LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Msd opti timing adjustment

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Old Aug 28, 2015 | 06:03 PM
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Default Msd opti timing adjustment

Just got in my new mad cap and it says you can advance or retard the timing 6 degrees. Just not see where or how to do this?
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Old Aug 28, 2015 | 06:05 PM
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Part #84811
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Old Aug 28, 2015 | 07:43 PM
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You need the whole MSD opti because the adjustment happens in the base and is a really poor idea anyway unless you have degreed damper, timing pointer and some reason not to do it much cheaper and easier with the pcm.
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Old Aug 28, 2015 | 08:55 PM
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Yes I already have the msd opti it just didn't coming with the timing adjustment. Thought about if I put some nitrous on it I could just pull a couple degrees instead of getting another tune.
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Old Aug 29, 2015 | 08:11 AM
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bad idea.
The MSD opti base moves the optical sensor to accomplish timing adjustment, again the adjustment is in the base not the cap.
Adjusting it blindly without keyed hub, degreed damper and fabricated pointer is really a bad idea. Setting up to do do it in a controlled manner with new hub, damper etc. then setting up a stable tune to be able to see what timing is with a light would be a lot of cost and hassle and really a poor idea as opposed to using a aftermarket ignition box to do the retard and get the benefits of window switch and spark based rev limit.

What you have is a BAD IDEA, drop it.
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