Plenum Question
#1
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Plenum Question
I have an '89 ASC GTA, L98 and i'm thinking of polishing the plenum.. I also have a spare '86 Plenum and was thinking of polishing that so there's no downtime.
Will that '86 Plenum work on the '89 setup with no cold start injector?
Will that '86 Plenum work on the '89 setup with no cold start injector?
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Car: Red Rooster
Engine: 305 TPI
Transmission: M5
Just open your hood and compare both of them. Look carefully and you should see or not see the difference.
Good luck!
Good luck!
#4
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Car: 04 GTO
Engine: LS1
Transmission: M12 T56
I'm tired, but IIRC you can use an early plenum on a late car, but not vv. The early plenum has some IAC stuff cast into it, later plenums don;t as all the IAC passages are in the TB.
So yes, it should work. If i'm wrong, someone correct me...
So yes, it should work. If i'm wrong, someone correct me...
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Car: 04 GTO
Engine: LS1
Transmission: M12 T56
ASC = american sunroof company, they did the majority of the thirdgen convertibles (and the only authorized verts), of course 89 bird verts weren't factory authorized anyway, they were sent by the customer for conversion, thus calling it an ASC GTA has some meaning (since other companies were doing the conversions back then, just saying 89 GTA vert wouldn't be specific, but saying 92 GTA vert would since they were factory auth. by that point)
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<font face="Verdana, Arial" size="2">Originally posted by Kwik89GTA:
The plenum itself should not be different.The runners are different, however. The drivers side runner has provisions for the CS Inejctor</font>
The plenum itself should not be different.The runners are different, however. The drivers side runner has provisions for the CS Inejctor</font>
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