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

93 94 opti cap

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Old Apr 16, 2009 | 05:44 PM
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Default 93 94 opti cap
will the cap off a 93 94 opti work on a 95 96 97 opti? thanks for the help
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Old Apr 16, 2009 | 06:36 PM
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No, 93 and 94 are non-vented and 95 up were vented.
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Old Apr 16, 2009 | 06:40 PM
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ya im doing an opti swap for a buddy and he is cheap to say the least and doesnt wanna buy a new cap i knew the vented and non vented but i wasnt sure if you could swap the cap anyway so i dont have to have this car in my way anymore since he wont spend the money
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Old Apr 16, 2009 | 06:48 PM
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Originally Posted by jankie93z
ya im doing an opti swap for a buddy and he is cheap to say the least and doesnt wanna buy a new cap i knew the vented and non vented but i wasnt sure if you could swap the cap anyway so i dont have to have this car in my way anymore since he wont spend the money
I think it should work fine. You could just cap off the vent port on the base and it would essentially become a non-vented opti.
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Old Apr 16, 2009 | 06:50 PM
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Some of the other guys may know a way around it but as far as I know, it won't work at all.
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Old Apr 16, 2009 | 06:50 PM
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thats what i was thinkin i just didnt wanna be the first one to try it and it go all bad on a car im workin on plus my buddy wont spend any money he has 500 projects and never has got one done and the car im putting the opti in is really nice i just dont get some people lol
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Old Apr 16, 2009 | 06:52 PM
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Originally Posted by jankie93z
thats what i was thinkin i just didnt wanna be the first one to try it and it go all bad on a car im workin on plus my buddy wont spend any money he has 500 projects and never has got one done and the car im putting the opti in is really nice i just dont get some people lol
It's his car. Get it running and let him deal with it later if anything goes wrong. I don't think anything would, but I wouldn't be too concerned.
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Old Apr 16, 2009 | 06:53 PM
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Originally Posted by ss.slp.ls1
I think it should work fine. You could just cap off the vent port on the base and it would essentially become a non-vented opti.

Hmmm, has anyone ever done this? Just wondering....
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Old Apr 16, 2009 | 06:55 PM
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i hope cuz im about to try it lol im at the shop now waiting on the 93 94 cap to get here
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Old Apr 16, 2009 | 06:57 PM
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I hope it works out, let us know for future reference anyway.
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Old Apr 16, 2009 | 07:00 PM
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will do!!! i hope it works just so i dont have to look at the car anymore lol
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Old Apr 16, 2009 | 07:20 PM
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well so far so good it bolts together lol
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Old Apr 16, 2009 | 07:24 PM
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I'm 95% sure you cannot. Otherwise you'd be able to do the reciprocal and make a 93-94 vented (MSD excluded) with out having to get the timing cover and vented Opti unit.
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Old Apr 16, 2009 | 07:28 PM
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i just bolted the 93 94 cap right on the 95 and up opti the rotor is the same and the cap minus the vents is the same
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Old Apr 16, 2009 | 07:30 PM
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Originally Posted by jankie93z
i just bolted the 93 94 cap right on the 95 and up opti the rotor is the same and the cap minus the vents is the same
Well take the old Vented cap and put it on the 93 94 Opti and let us know If it's that easy to vent our Opti's w/o buying the MSD unit, that'd make a lot of us happier lol
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Old Apr 16, 2009 | 07:33 PM
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i just bolted it together now too see if it will run? thats the important part lol ill let ya know in an hour or two
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Old Apr 16, 2009 | 07:37 PM
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Originally Posted by Formula350
Well take the old Vented cap and put it on the 93 94 Opti and let us know If it's that easy to vent our Opti's w/o buying the MSD unit, that'd make a lot of us happier lol
That is only half of the venting ports needed. The other port is in the body of the opti. Putting a vented cap on a non-vented opti is part of how you convert a non-vented to vented. http://www.corvettefever.com/howto/16758/index.html


Caps will swap. It's just having (or not having) the vent.
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Old Apr 16, 2009 | 07:41 PM
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so will it work? like if i bolt it on will it run
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Old Apr 16, 2009 | 08:12 PM
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Yes, it will work, but you lose the vent function.
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Old Apr 17, 2009 | 12:57 PM
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dont care about the vent just as long as it will run. opti's dont last long enough to worry about vented or non vented
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