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

How do you tell if it's a GM Opti?

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Old 08-16-2009, 05:50 PM
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Default How do you tell if it's a GM Opti?

What's the best way to tell if an opti is a real GM opti? I found one at a great price and he believes it's a never ran GM opti, but I want to be sure before I buy it. Here are pictures of the Opti in question (I left the pictures as links because they are pretty big):
http://img134.imageshack.us/img134/1803/opti.jpg
http://img200.imageshack.us/img200/5918/opti1.jpg

I know the color looks like a GM opti, but there are companies selling fake Opti's with GM colors, such as this:

Last edited by Counted Out; 08-16-2009 at 06:37 PM.
Old 08-16-2009, 06:55 PM
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looks identical to the one on my car, and as far as i know mine is original....
Old 08-16-2009, 06:59 PM
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Originally Posted by 97badass
looks identical to the one on my car, and as far as i know mine is original....
But so does the cheap knock-off, unless you see something I don't.
Old 08-16-2009, 07:01 PM
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the pinkish color swirls in the yellow. mine has it too. other then that... look for the part number
Old 08-16-2009, 07:07 PM
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Originally Posted by 97badass
the pinkish color swirls in the yellow. mine has it too. other then that... look for the part number
Can't find one, which seemed odd to me but definitely not enough to make me think it's not a GM one.
Old 08-16-2009, 07:17 PM
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i got sent a gm unit instead of the intended msd distributor recently. it looked identical to that, but no way to be sure
Old 08-16-2009, 07:39 PM
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Originally Posted by rat93
i got sent a gm unit instead of the intended msd distributor recently. it looked identical to that, but no way to be sure
No part numbers on it?
Old 08-17-2009, 03:25 AM
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So I ended up buying it anyway. $45 shipped for what seems to be a never ran GM opti - I couldn't pass that up.
Old 08-17-2009, 03:30 AM
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Take it apart and see if it has the Mitsu optical sensor.
Old 08-17-2009, 03:45 AM
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Originally Posted by madhatter
Take it apart and see if it has the Mitsu optical sensor.
I'll do it once I get it, already made the deal.
Old 08-17-2009, 07:58 AM
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I've heard that the driveshaft in the unvented knockoffs isn't removable. Whether or not that's true, I have no idea. If it is, the one you bought would be the real deal. The opti in those link looks like it's been mounted, in my opinion.
Old 08-17-2009, 08:19 AM
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Originally Posted by BTC
I've heard that the driveshaft in the unvented knockoffs isn't removable. Whether or not that's true, I have no idea. If it is, the one you bought would be the real deal. The opti in those link looks like it's been mounted, in my opinion.
Yeah, he said it was mounted just never ran. It's been sitting for awhile so it's a bit dirty. I'm about to do my cam swap so I figured I'd put in this one while I have the stock (130k) one out.




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