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

difficlutly with timing chain and reluctor

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Old 10-22-2007, 09:20 PM
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Default difficlutly with timing chain and reluctor

So I've got my new motor and after I get the timing chain on, theres a little three pronged reluctor ring looking thing thats supposed to go on the crank after the gear, I assume its for a crank shaft sensor or something, and the ring will slide on the shaft but the key that keys the crank gear isn't long enough to make contact with the reluctor ring, so it just spins freely on the crankshaft. I'm struck, I want to start wrapping this project up and running into little stuff like this pisses me off lol.. I've searched the Mitchel program, Shbox, Google, no luck, every diagram I find doesn't even show this piece.

Car's a 1996 btw.
Old 10-22-2007, 09:29 PM
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can you get a pic?
i have a 94 or 95 lt1 at work and noticed it had a 2nd keyway. is yours in there?
Old 10-22-2007, 10:07 PM
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No but I do have the second key way, no key in it. When I slid the crank gear back on the old crank ( still in old block ) there was still a little nub for the reluctor to sit on..
Old 10-22-2007, 10:11 PM
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stupid question, but is the gear on all the way? is there anything that could be blocking it from going on all the way?
Old 10-23-2007, 06:35 PM
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Originally Posted by Z28_DAD
stupid question, but is the gear on all the way? is there anything that could be blocking it from going on all the way?
yep, check and make sure the crank gear is on all the way.
Old 10-23-2007, 07:03 PM
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had the same problem, crank gear wasn't on far enough
Old 10-23-2007, 07:08 PM
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I think there is a difference in timing gears between 94 and 95. The gears with the ring are a little thinner. That is part of the problem with using a vented opti on early LT's.


But I could be wrong.

Measure the thickness of the two gears.
Old 10-23-2007, 07:37 PM
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either the gear is not on all the way or you have an incorrect key in the crank.
Old 10-23-2007, 09:05 PM
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The gears on all the way, I'll measure the thickness of the gear tomorrow...
Old 10-24-2007, 07:09 PM
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Turned out to be the wrong key



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