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08-27-2019
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#1 |
 
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Mystery Plenum
Bought this on Ebay oddly I have the front piece from when I bought a air horn and throttle body several years ago. Not sure of history or if it will work...
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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08-27-2019
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#2 |
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Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Mystery Plenum
more..
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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08-27-2019
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#3 |
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,169
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Re: Mystery Plenum
if I am looking at it right, it eliminates the IH?
Where is the cover for the outer 'box' areas I see in the pictures?
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
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08-27-2019
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#4 |
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Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Mystery Plenum
Wont know much until its here, those are the PCV provisons, might have to make something.... and always a chance its a bust.... will see
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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08-28-2019
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#5 | |
 
Join Date: Dec 2003
Location: Arcadia,OK
Posts: 3,394
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Re: Mystery Plenum
Quote:
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Jerry Downey JERRYS LT5 GASKETS & PARTS http://www.jerrysgaskets.com 1994 ZR-1, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc. 2016 Black-Red, 3LT-Z51 Auto 8-speed. |
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08-29-2019
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#6 |
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Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Mystery Plenum
Possible this is an early prototype floor of runner is 5.5" long.... primary is 36.5mm and secondary is 37.5mm
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 Last edited by LGAFF; 08-29-2019 at 11:59 PM. |
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08-30-2019
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#7 |
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Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Mystery Plenum
Prototype vs production
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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08-28-2019
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#8 |
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Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,169
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Re: Mystery Plenum
ah, I thought you had it in your hands
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
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08-28-2019
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#9 |
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Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Mystery Plenum
so oddly I picked this up with a prototype throttle body about 7-8 years ago
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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08-28-2019
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#10 |
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Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Mystery Plenum
TB the adapter came with ...
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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