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LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Pin Drive or spline drive??

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Old Feb 2, 2007 | 05:57 PM
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DougsZ28Camaro
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Pin Drive or spline drive??
I just recently purchased a Lt1 383 stroker with about 450+ HP. My question is do i need the pin drive distrubtor or the spline drive? My old engine was a stock Lt1. any help would be great. Thanks
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Old Feb 2, 2007 | 06:00 PM
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OBE1 95Z28
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It depends on what style cam was used as the opti is driven off the end of the camshaft. LT1's had both styles, 93-94 were spline driven, 95-97 were pin driven.
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Old Feb 2, 2007 | 06:08 PM
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DougsZ28Camaro
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ok well mine was a 94. So that means i would need the spline drive then correct?
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Old Feb 2, 2007 | 07:39 PM
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OBE1 95Z28
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If you want to reuse your 1994 opti, then you need a cam with the spline drive. What cam type was installed in the 383?
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Old Feb 2, 2007 | 07:42 PM
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OBE1 95Z28
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Here's a link to a good write-up explaining some of the differences:

http://para.noid.org/~muttvette/opti.html
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