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

Bunch of issues: Can't communicate with PCM, no spark, no injector pulse

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Old 01-13-2012, 05:43 PM
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Originally Posted by 95mysticta
An MSD Opti is no better lol... do a search and see what you find on them.

IMO you could have got a dud like a lot of us get but wasting even more cash on something thats just as if not worse for reliability is a no no! Pick up a new Delco from Summit and give it a shot. Thats what i would do if i was in your position. Shame if you could to wait till spring as ill have a nearly new 5k old delco opti and msd cap n rotor kit with maybe 2-3 k since i put the motor in. Im going to let all my stuff go up cheap once i get to pulling the motor apart for the EFI 24x swap come spring.
I've done an extensive search and have concluded that they ALL suck!

This one just happens to come with a warranty. What I'd really like to do is the EFI swap but that is just not in the cards right now.
Old 10-24-2013, 11:41 AM
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what is OPTI abbreviated for? having the same problem with my truck.
Old 10-24-2013, 12:21 PM
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Originally Posted by Paula Polozola
what is OPTI abbreviated for? having the same problem with my truck.
Wow. Old thread. The OPTI is the Optispark distributor mounted on the front of the LT1 block. Hope that helps.
Old 10-24-2013, 02:26 PM
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Originally Posted by Rob94hawk
Wow. Old thread. The OPTI is the Optispark distributor mounted on the front of the LT1 block. Hope that helps.
Originally Posted by Paula Polozola
what is OPTI abbreviated for? having the same problem with my truck.
Not going to have anything to do with a truck (unless it is a transplant). No LT1s came in trucks.



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