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what heads for my supercharged z?

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Old 06-17-2002 | 02:40 PM
  #1  
CRZYTRN-92Z28's Avatar
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From: albuquerque
Car: 1992 Z28
Engine: 350 L98 w/ D-1SC
Transmission: POS 700-R4
what heads for my supercharged z?

L98 w/ a D-1SC blower pushing 8#s of boost on a 10#pulley because of elevation. All engine has is headers and 30# injectors. What heads would be right for my blower setup. Any suggestions?
Old 06-17-2002 | 03:39 PM
  #2  
tpi_roc's Avatar
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From: Orygun
Pro actions
Old 06-18-2002 | 12:13 PM
  #3  
88TPI406GTA's Avatar
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Joined: Sep 2001
Posts: 1,355
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From: MN
Car: 2009 Pontiac G8 GXP
Engine: LS3
Transmission: 6L80E
Axle/Gears: 3.27
Agreed...both I and a friend of mine own a set of the Pro Action 220 aluminum heads. He is staying carbed in his 83 Grand Prix and is looking to put a Vortech SC (carbed version) on it with his 406.

They flow very similar to the AFR 210s and are cheaper...do a search in this board for Pro Action and look for the long thread started by me for more info.

Good luck.
Old 06-20-2002 | 01:13 AM
  #4  
BLWR PWR's Avatar
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From: Bend, Oregon
Car: 89 IROC
Engine: Built 383, Vortech SC
Transmission: Pro-Built 700R4
Axle/Gears: Dana 44, True Trac, 3.54
Go to the power adder board and ask this question. Do alot of research. Go to the Chevy Hi Perfomance web site and check out all the flow numbers from just about every head you can imagine. Those Pro Actions might be to big for your set up if they are 220 cc intake ports. You did say except for the sc , you are basicly stock.
Old 06-20-2002 | 04:38 AM
  #5  
gta324's Avatar
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From: sweden
Car: GTA -89
Engine: Blown 415"
Transmission: 4L80E
Axle/Gears: Strange 12-bolt
The heads need to flow good on the exhaust side..........

I'm planning on outting a ATI 9 psi on my 383 and I have canfield 195 cc heads.....
Old 06-20-2002 | 09:17 AM
  #6  
88TPI406GTA's Avatar
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Joined: Sep 2001
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From: MN
Car: 2009 Pontiac G8 GXP
Engine: LS3
Transmission: 6L80E
Axle/Gears: 3.27
I would also definitely plan on a cam change to maximize the benefit of the SC...

Forced applications tend to be less of an issue with larger port sizes than you would find with a N/A engine...Why? Because the more efficient the flow rate is, the less restrictive, then you end up running a bit less boost for the same HP level.

I would also recommend optimizing your intake setup with something better than stock TPI...that would be money well spent as the runner/base on a stock TPI are VERY restrictive. This means that you will have to run more boost to overcome that limitation and make your wanted power level...

Good luck...
Old 06-20-2002 | 03:06 PM
  #7  
bbunting's Avatar
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From: CR, Iowa
Car: 1990 IROC Z
Engine: blown 390 CI
Transmission: TKO II
https://www.thirdgen.org/techbb2/sho...hreadid=114300
Old 06-20-2002 | 11:34 PM
  #8  
CRZYTRN-92Z28's Avatar
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From: albuquerque
Car: 1992 Z28
Engine: 350 L98 w/ D-1SC
Transmission: POS 700-R4
Well first off I should probablly list all my mods so you all can have a feel for what i've got going on. I've got the supercharger, 3.73gears,edelbrock headers,compcam,30#injectors, B@Mshiftkit,B@Mflywheel,2600stallconverter,and the 3 core intercooler. I am Definetly going to get some runners and port the plenum,runners, and intake manifold. I've just heard so many different
opinions on this that its hard to decide. From what it sounds like, the Dart heads seem to flow damn well , the AFR's seem to also. Anyone know how much either of these go for as far as $$?
Old 06-21-2002 | 08:26 AM
  #9  
bbunting's Avatar
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Joined: Jun 2002
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From: CR, Iowa
Car: 1990 IROC Z
Engine: blown 390 CI
Transmission: TKO II
$2,000.00 Dart 18 degree
$1,924.00 AFR 227 CC CNC Competition
$1,660.00 Edelbrock Victor Race
$1,244.00 Pro Lightning 235 CC Iron
$1,040.00 Trick Flow R series
$1,600.00 Pro Action 235 CC Iron
$1,400.00 Brodix Track 1-CNC
$2,400.00 Dart IRON EAGLE 230 CC
$1,329.00 Brodix Track 1-out of the box
$1,200.00 Dart Pro 1 alum 2.05/1.60 215 cc
$850.00 AFR 210 CC Aluminum

These are approximate for complete sets-of course you can always find different prices for them. Most prices are from Summit.
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