ZZ4 intake manifold
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Supreme Member
Joined: Sep 2001
Posts: 6,111
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From: Ontario, Canada
Car: 1988 Firebird S/E
Engine: 406Ci Vortec SBC
Transmission: TH-350/3500stall
Axle/Gears: 7.5" Auburn 4.10 Posi-Traction
ZZ4 intake manifold
What is the physical difference between the GM ZZ4 intake and a Edelbrock performer?
Carb flange height???
intake runners ???
plenum volume/shape????
Carb flange height???
intake runners ???
plenum volume/shape????
Last edited by F-BIRD'88; Dec 14, 2005 at 08:40 PM.
Joined: Mar 2000
Posts: 43,187
Likes: 45
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
You saw this, I presume https://www.thirdgen.org/techbb2/sho...hreadid=336995
Too bad he sent the ZZ back before we could ask all the right questions.
Too bad he sent the ZZ back before we could ask all the right questions.
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Joined: Jun 2001
Posts: 3,238
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From: Calgary, Alberta, Republic of Western Canada
Car: 1986 Sport Coupé
Engine: 305-4v
Transmission: 700R4 and TransGo2
It doesn't look like there are any significant differences. Kind of a surprise, I guess, for everyone running the ZZ4 intake.
Joined: Mar 2000
Posts: 43,187
Likes: 45
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The vacuum port on the rear runner is farther away from the carb flange on the GMPP manifold, making it easier to clear the Holley fuel bowl. That and the rear coolant passage tap on the GMPP are about all I can see from the top view.
Of course, this is a little apples-&-oranges since the Performer isn't the EGR version. For the originator of that thread, that was fine.
And, subtle changes in runner routing/sizing that can't be seen in that pic could be significant.
Of course, this is a little apples-&-oranges since the Performer isn't the EGR version. For the originator of that thread, that was fine.
And, subtle changes in runner routing/sizing that can't be seen in that pic could be significant.
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