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Upper Plenum Construction.

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Old Oct 2, 2014 | 06:23 PM
  #1  
firechicken1992's Avatar
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From: Billings, MT
Car: 92 Firebird--02 Grand Prix GTP 2Dr
Engine: Poncho 400--3.8 Supercharged
Transmission: T56 6 Speed--4T65EHD
Axle/Gears: Open 10 bolt 3.42--Internal 2.93
Upper Plenum Construction.

First off, sorry if this has been answered already, I searched as much as I could and couldn't find an answer.

How is the upper plenum constructed? Is it just a box and nothing more? Or is the inside extensions of the runners? Does, for example, the right bank feed from the left of the plenum and vice versa? Or does it feed right-to-right and left-to-left? How does the air travel? I'd just like some enlightenment from the TPI gods of the forum .
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Old Oct 2, 2014 | 06:29 PM
  #2  
NowhereFast's Avatar
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Joined: Feb 2011
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From: Long Island, NY
Car: 87 Trans Am, 99 WS6, 16 Mustang GT
Engine: LB9, LS1
Transmission: 700R4, T56
Axle/Gears: 3.42 Posi, 4.10 Posi
Re: Upper Plenum Construction.

It's essentially a box. There's really no chambers, per se.
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Old Oct 3, 2014 | 07:01 PM
  #3  
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From: West of Toronto
Car: 89 IROC
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Transmission: Stage 2 700R4, LS1 driveshaft
Axle/Gears: Strange 3.42 w/ Auburn
Re: Upper Plenum Construction.

Plenum is open inside


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