Cam Swap part advice

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Dec 13, 2008 | 01:16 PM

#16

twcblackhand6970

Thread Starter

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Joined: Apr 2008

Posts: 404

From: College Station, Tx

okay. and also where's a good place to get a unvented opti or vented opti swap parts?

Dec 13, 2008 | 04:11 PM

#17

96' Formula WS6

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Joined: Oct 2006

Posts: 377

From: Green Cove Springs FL

The only difference beween the vented and non vented is the cap and rotor so as far as doing a conversion that would be all you need

Dec 13, 2008 | 10:13 PM

#18

twcblackhand6970

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Registered User

Joined: Apr 2008

Posts: 404

From: College Station, Tx

i thought they wouldn't interchange. If that's the only difference couldn't I just buy a vented one then?

Dec 13, 2008 | 10:21 PM

#19

shoebox

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Joined: Dec 1969

Posts: 27,728

From: Little Rock, AR

Quote:

Originally Posted by twcblackhand6970

i thought they wouldn't interchange. If that's the only difference couldn't I just buy a vented one then?

No, you got some bad advice. The drive mechanisms are totally different.
From a stock engine, you would have to swap:

Besides the optispark itself (GM p/n 1104032), you need:

95 or later timing cover [1995 front cover (includes round seals) GM p/n 12552426]
late model cam (or have your cam modified by drilling the hole in the front to the proper size [.500"dia. X 1.0625" deep] and a longer dowel pin added
95 and later optispark electrical harness GM p/n 12130319 (cheaper alternatives available from other sources)
optispark vacuum harness GM p/n 12555323
vacuum fitting [GM p/n 14082470] or "tee" to provide vacuum for the opti
95 or later timing gear set or at least cam gear (GM p/n 10206039)
timing cover gasket GM p/n 10128293
water pump gaskets [2] GM p/n 10128343
intake manifold gaskets if you are pulling the cam GM p/n 12524653