Opti-Spark conversions

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Dec 23, 2007 | 08:16 PM

#16

3DFORMULA

Registered User

Joined: Jul 2006

Posts: 309

From: Bartonville, Ill

Quote:

Originally Posted by Injuneer

As Shoebox correctly pointed out.... it has NOTHING to do with OBD. For F-Bodys: 93 and 94 cars had the unvented, splined shaft driven Opti. In 95, they stayed with the OBD-I PCM, but switched to the 95-97 vented Opti, driven by the cam dowel pin. If you convert the cam, timing set, timing cover and wiring harness extension, you can run the 95-97 vented Opti on a 93-94 engine.

Better worded than what I had previously done for him. Not the best speaker.

Dec 23, 2007 | 08:20 PM

#17

Injuneer

Administrator

Joined: Nov 1998

Posts: 71,110

From: Hell was full so they sent me to NJ

Most cams come with the larger pilot hole required for the pilot shaft on the 95-97 vented Opti. That way, you can use the cam with either, just by adjusting the length of the dowel pin.

Conversion info:

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