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Old 01-20-2006, 09:32 PM   #1
corvette1989bham
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Default Stock Plenum - What is defference between early and late?

I have an extra "early" plenum. Will it fit my 95? Pictures are even better to show the differences (if any).
THANKS!
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Old 01-20-2006, 11:05 PM   #2
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I believe one difference is the addition of EGR to the 1993-95 plenum. So your early one won't have that. I also believe the ports to the injector housings were wider on the later ones?

It's my understanding it would physically fit, though. Just that it might not be very ideal. You could always buy some injector housings (they are actually not uber expensive) and have your extra plenum and IH's ported, and keep your stock ones stock.
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Old 01-20-2006, 11:39 PM   #3
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You have the EGR but if it has headers that will be removed
the early plenums have the space where the egr tube bolts up you would just need to have it machined.


and the hard vacum lines are different in a few spots the main ones up front one of them sharply turns downwards like on the 90s both up front are straight.


It would bolt right up you just need to get the vacum lines situated
there may be more but basically it will work
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Old 01-21-2006, 07:18 AM   #4
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Do you think it would be better to sell my early plenum to some one with an early car before I have it machined for a later model and use the money (and probably put some with it ) to TRY to find a later plenum? My thought is I hate to ruin a perfectly fine early plenum if someone needs it.
Thanks
Chris
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Old 01-21-2006, 10:45 AM   #5
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Why do you need to find a later one? I mean, what's the goal? I don't believe plenums tend to break much.

FWIW, both styles are available from Kurt White @ $1,300 each.
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Old 01-21-2006, 12:25 PM   #6
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If you dont mind me asking what did you pay for it?
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Old 01-21-2006, 03:19 PM   #7
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If this plenum will work, I was gonna have it powder coated and worked so I wouldnt have any down time.
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Old 01-21-2006, 03:19 PM
 
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