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Two questions about plenum removal

Old Jun 24, 2008 | 09:56 PM
  #1  
vette gator's Avatar
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From: Gainesville, FL
Car: 85 Z28
Engine: 305 TPI
Transmission: 700R4
Two questions about plenum removal

1. Are gaskets used where the plenum connects to the runners and/or where the runners attach to the intake manifold? I need to get at my EGR valve and wanted to have all the supplies on hand before tearing into it.

2. In the section on plenum removal, my Haynes manual doesn't say anything about first needing to take off the throttle body. Looking at the motor, I don't see how this could be possible. Does the throttle body have to come off before you can take off the plenum?
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Old Jun 24, 2008 | 10:19 PM
  #2  
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From: Mims, Florida
Car: '87 IROCZ
Engine: 395 ZZ4
Transmission: ProBuilt 700R4
Axle/Gears: 9 bolt 3.70s
Re: Two questions about plenum removal

If you are a gator fan, I should need speak to you, I'm a Buckeye fan!
hahaha.
1) Yes, there are gaskets everywhere: between the plenum & runners AND between the runners & intake.
2) You can leave the TB on the plenum (I think). Just disconnect the throttle wire and any other connection(like the kick down cable). I have removed the plenum many times with leaving the TB bolted to the front of the plenum.

Be sure the mark all the hoses be color or number as you remove or disconnect them. Even take a few pictures. This will greatly aid you when it comes to reassemble everything.
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Old Jun 25, 2008 | 09:57 AM
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From: Gainesville, FL
Car: 85 Z28
Engine: 305 TPI
Transmission: 700R4
Re: Two questions about plenum removal

Thanks for the info. When you remove and replace the plenum, do you need a new gasket set or do you just re-use the existing ones?
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Old Jun 25, 2008 | 10:04 AM
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From: chicago
Car: 87 GTA
Engine: 385 sbc
Transmission: 700r4
Axle/Gears: 2.73 posi
Re: Two questions about plenum removal

you need new gaskets, felpro sells an entire kit for the whole upper.lower, and fuel rails. I think its $30
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Old Jun 25, 2008 | 10:13 AM
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Car: 1989 IROC-Z
Engine: 350 TPI
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Re: Two questions about plenum removal

Originally Posted by wanab03ss
you need new gaskets, felpro sells an entire kit for the whole upper.lower, and fuel rails. I think its $30
Its $38,69 at summitracing : http://store.summitracing.com/partde...t=FEL-MS930351
used that kit on friday last week when I changed the innjectors.
That kit will give you all you need and more
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Old Jun 25, 2008 | 11:17 AM
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Re: Two questions about plenum removal

$25 at your local autozone in stock ....
http://www.autozone.com/R,APP684029/...ductDetail.htm
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Old Jun 25, 2008 | 12:42 PM
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Re: Two questions about plenum removal

Tube of RTV-6.99









































just kidding
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