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#11 |
![]() Join Date: Jul 2010
Location: Woodstock, Ontario, Canada
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I wonder if eliminating the common plenum entirely would be of benefit? This would require 8 t-bodies. and 8 velocity stacks. I always wondered how those systems on teh older hot rods really worked. Individual runner length is easily individualized.
Complex as all heck, but would look cool poking through the hood!
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peace Paul ZR-1 Net Registry Member #1494 |
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#12 |
![]() ![]() Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
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Yup! A sheet metal box(s) with shortish curved (funnel) runners... I haven't crunched the numbers yet for the runner/air box dimensions yet, but a Toledo hood (or the like) is prolly going to be part of the answer.
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
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#13 | |
![]() Join Date: Mar 2007
Location: Crystal Lake, IL
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I wonder if the runners are hitting, I am only raising the box... As far as run a velocity stack setup, shorter runners make it more difficult to keep the car at idle.
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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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#14 |
![]() Join Date: Feb 2011
Location: Vicksburg, MS
Posts: 135
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It makes me happy to think that an aftermarket plenum may one day be made available by a savvy member of the brotherhood that will give our cars even more umph.
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[B][U]1991 No. 519[/U][/B] |
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#15 | |
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Location: Jupiter, Fl.
Posts: 815
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This sounds like a job for one of those 3D printers...a big one that can use some heat resistant plastic. |
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#16 |
![]() Join Date: Mar 2007
Location: Crystal Lake, IL
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What part of the plenum is rubbing?
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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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#17 |
Join Date: May 2007
Location: Chicagoland, IL
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Pete used a Hogan sheetmetal plenum on Kevin's 441 several years ago. I believe it really didn't offer much improvement.
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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#18 | |
![]() Join Date: Mar 2007
Location: Crystal Lake, IL
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I wonder if the volume was sufficient...also velocity stacks might have helped flow....intake runners that share a wall with the plenum generally have flow opportunities....
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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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#19 | ||
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Location: Bartlett, IL
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But that Hogans was a short runner intake.. Lee is looking to keep the runners as they are and expand the 'box' if I understand it correctly
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
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#20 | |
![]() Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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I will also add that there was a ZR-1 race car with a raised roof plenum in another country with a documented 15hp increase due unshrouding of the roof side of the runner.
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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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