1994 optispark question
Thread Starter
Instructor
Joined: Nov 2007
Posts: 102
Likes: 0
From: Air Capitol Kansas
1994 optispark question
I have heard there are two optispark dist for the 94's. There is a optispark 1 and the 94-1/2s have an optispark 2. I am needing to replace the cap and rotor on mine and dont know how to tell which one I have. Can I tell somehow by referencing my VIN?? Is there an easy way to tell which one I have so I can order the right one before I tear into replacing them?? 
Le Mans Master
Joined: May 2005
Posts: 7,354
Likes: 2,279
From: Central Maryland
As Mojave noted, all '94 Corvettes got the lousy Gen-1 Opti.
Rather than swapping only your cap & rotor, I'd suggest you consider replacing the entire unit with the MSD Opti.
Live well,
SJW
Rather than swapping only your cap & rotor, I'd suggest you consider replacing the entire unit with the MSD Opti.
Live well,
SJW
Thread Starter
Instructor
Joined: Nov 2007
Posts: 102
Likes: 0
From: Air Capitol Kansas
I just read on the Summit online catalog that you can tell the difference between the two by looking for two vacuum lines on the drivers side of the opti 2. all others are opti 1. I would love to replace the opti with a new MSD unit. I am trying a major tuneup first. When the wife cools down about the vette purchase I will upgrade to the MSD unit.
Thanks
Thanks
Instructor
Joined: Sep 2002
Posts: 105
Likes: 0
From: Orlando Florida
I believe you can install an Opti-2 cap on a Opti-1 version without any problems. You would then have to add the tubing and check valve to your system and connect that to an intake manifold source.
Later .. .Larry S.
Later .. .Larry S.
Melting Slicks
Joined: Mar 2005
Posts: 2,352
Likes: 230
From: Northeast FL
The MSD is a sweet piece. Too bad you can't see it once it's installed. It works good too!
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Pro
Joined: Jun 2007
Posts: 747
Likes: 93
From: Marietta, GA
I replaced the original Optispark on my 94 LT1 about four months a go. The car had 71,500 miles on it when I bought it and the opti was way over-due for replacement.
I bought and installed the MSD unit and it has preformed very well for me. I really like the fact that it is vented and that part of the installation was very easy (unlike the rest of the replacement ... getting the harmonic balancer off was extremely difficult!). Anyway the MSD unit has been excellent for me so far.
I bought and installed the MSD unit and it has preformed very well for me. I really like the fact that it is vented and that part of the installation was very easy (unlike the rest of the replacement ... getting the harmonic balancer off was extremely difficult!). Anyway the MSD unit has been excellent for me so far.
