Body General body information and techniques for restoration, repairs, and modifications.

IROC extractor hood

Thread Tools
 
Search this Thread
 
Old 04-24-2022, 08:11 PM
  #1  
TGO Supporter

Thread Starter
 
soloc4's Avatar
 
Join Date: Nov 2003
Location: Lake Stevens, WA
Posts: 406
Received 229 Likes on 131 Posts
Car: 84 Z28, 92 C4 suspension F&R, ABS
Engine: 408 LS2, CNC LS3 heads, Comp Cam
Transmission: Magnum F, RTX clutch, Tick shifter
Axle/Gears: DANA 44, Tru Trac, 3:73 gears
IROC extractor hood

I wanted something extraordinary and unique for my build, so I came up with this.

Bead rolled and shirking the pans

Added extensions to the sides

Fitting and preparing for welding

After about 12 hours of tig welding

It is now ready for primer and block sanding
The following 2 users liked this post by soloc4:
87CIZ (06-05-2022), ughmas (04-25-2022)
Old 04-24-2022, 08:21 PM
  #2  
Supreme Member

iTrader: (25)
 
IROCZman15's Avatar
 
Join Date: Sep 2005
Location: NJ
Posts: 1,816
Received 280 Likes on 218 Posts
Car: 1987 IROC-Z
Engine: 406 on N20 w/ EFI
Transmission: P.B. 700R4
Axle/Gears: 12 bolt w/ 3.91
Re: IROC extractor hood

woah
Old 04-24-2022, 08:50 PM
  #3  
Supreme Member

 
skinny z's Avatar
 
Join Date: Dec 2005
Location: Alberta
Posts: 9,179
Received 639 Likes on 539 Posts
Re: IROC extractor hood

Things that make you go hmmm.
I like the idea.
Do you have a cold air intake package as well?
Old 04-24-2022, 09:12 PM
  #4  
Supreme Member
 
Komet's Avatar
 
Join Date: Feb 2021
Location: WA
Posts: 1,050
Received 376 Likes on 277 Posts
Car: 1989 IROC-Z
Engine: L98 350 TPI
Transmission: 700R4
Axle/Gears: BW 9 Bolt / 2.77 Posi
Re: IROC extractor hood

I dig it. Any plans for ducting behind the radiator?
Old 04-24-2022, 09:46 PM
  #5  
COTM Editor

iTrader: (22)
 
QwkTrip's Avatar
 
Join Date: Mar 2001
Posts: 9,929
Likes: 0
Received 1,860 Likes on 1,274 Posts
Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: IROC extractor hood

How in the world do you have room for that? My engine gets closer to hood the further forward in engine bay. It even bumps the hood insulation just behind the radiator.
The following users liked this post:
ughmas (04-25-2022)
Old 04-24-2022, 10:16 PM
  #6  
Senior Member

 
Swapper's Avatar
 
Join Date: May 2010
Posts: 595
Received 173 Likes on 131 Posts
Re: IROC extractor hood

hmm i never thought about that. i like the idea. i did mine a little different


Old 04-24-2022, 11:42 PM
  #7  
TGO Supporter

Thread Starter
 
soloc4's Avatar
 
Join Date: Nov 2003
Location: Lake Stevens, WA
Posts: 406
Received 229 Likes on 131 Posts
Car: 84 Z28, 92 C4 suspension F&R, ABS
Engine: 408 LS2, CNC LS3 heads, Comp Cam
Transmission: Magnum F, RTX clutch, Tick shifter
Axle/Gears: DANA 44, Tru Trac, 3:73 gears
Re: IROC extractor hood

Originally Posted by skinny z
Things that make you go hmmm.
I like the idea.
Do you have a cold air intake package as well?
Yes, it’s the aluminum box in the RH battery tray.

Originally Posted by Komet
I dig it. Any plans for ducting behind the radiator?
Not at this time, if it were a dedicated track car I would think about it. The ducts align with the dual fans though.

Originally Posted by QwkTrip
How in the world do you have room for that? My engine gets closer to hood the further forward in engine bay. It even bumps the hood insulation just behind the radiator.
It’s a Camaro, if it were a Firebird then this would not work. It would look out of place on a Trans Am anyway. The ducts curve down over the cowl brace and the intake tube in the picture.

The following users liked this post:
Arctic White 91 RS (10-12-2022)
Old 04-24-2022, 11:57 PM
  #8  
COTM Editor

iTrader: (22)
 
QwkTrip's Avatar
 
Join Date: Mar 2001
Posts: 9,929
Likes: 0
Received 1,860 Likes on 1,274 Posts
Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: IROC extractor hood

Originally Posted by soloc4
It’s a Camaro, if it were a Firebird then this would not work. It would look out of place on a Trans Am anyway. The ducts curve down over the cowl brace and the intake tube in the picture.
Yeah, Camaro has the goods in the hood clearance department for sure.
Your engine bay looks so clean and tidy, man! Your fabrication work is always sooooo nice, too!
Old 04-25-2022, 12:43 AM
  #9  
TGO Supporter

Thread Starter
 
soloc4's Avatar
 
Join Date: Nov 2003
Location: Lake Stevens, WA
Posts: 406
Received 229 Likes on 131 Posts
Car: 84 Z28, 92 C4 suspension F&R, ABS
Engine: 408 LS2, CNC LS3 heads, Comp Cam
Transmission: Magnum F, RTX clutch, Tick shifter
Axle/Gears: DANA 44, Tru Trac, 3:73 gears
Re: IROC extractor hood

Originally Posted by QwkTrip
Yeah, Camaro has the goods in the hood clearance department for sure.
Your engine bay looks so clean and tidy, man! Your fabrication work is always sooooo nice, too!
Thanks, I like to push my limits. This one went way beyond those. I learned a lot with this project. You would think that at my age, I would sit back and retire, but I’m just not ready for that yet.
Old 04-25-2022, 03:03 PM
  #10  
Supreme Member

 
1989karr's Avatar
 
Join Date: Feb 2005
Location: Hawaii
Posts: 2,292
Received 157 Likes on 146 Posts
Car: 89' Firebird
Engine: 3.4L V-6
Transmission: 700-R4
Axle/Gears: Whatever came stock!
Re: IROC extractor hood

Clean!!

What radiator top support are you using? that looks kinda like a third gen one but at the same time looks different?
Old 04-25-2022, 03:29 PM
  #11  
TGO Supporter

Thread Starter
 
soloc4's Avatar
 
Join Date: Nov 2003
Location: Lake Stevens, WA
Posts: 406
Received 229 Likes on 131 Posts
Car: 84 Z28, 92 C4 suspension F&R, ABS
Engine: 408 LS2, CNC LS3 heads, Comp Cam
Transmission: Magnum F, RTX clutch, Tick shifter
Axle/Gears: DANA 44, Tru Trac, 3:73 gears
Re: IROC extractor hood

Originally Posted by 1989karr
Clean!!

What radiator top support are you using? that looks kinda like a third gen one but at the same time looks different?
The one in this picture is the original from the '84. I have since installed a Griffen radiator and had to make a custom aluminum piece that looks very similar to the stock one.
The following users liked this post:
1989karr (04-26-2022)
Old 04-26-2022, 01:27 PM
  #12  
Supreme Member

 
1989karr's Avatar
 
Join Date: Feb 2005
Location: Hawaii
Posts: 2,292
Received 157 Likes on 146 Posts
Car: 89' Firebird
Engine: 3.4L V-6
Transmission: 700-R4
Axle/Gears: Whatever came stock!
Re: IROC extractor hood

Originally Posted by soloc4
The one in this picture is the original from the '84. I have since installed a Griffen radiator and had to make a custom aluminum piece that looks very similar to the stock one.

Ahhh nice!

84, no wonder it looks different than the ones Im more used too.

Great build!!!
Old 04-27-2022, 06:39 PM
  #13  
TGO Supporter

Thread Starter
 
soloc4's Avatar
 
Join Date: Nov 2003
Location: Lake Stevens, WA
Posts: 406
Received 229 Likes on 131 Posts
Car: 84 Z28, 92 C4 suspension F&R, ABS
Engine: 408 LS2, CNC LS3 heads, Comp Cam
Transmission: Magnum F, RTX clutch, Tick shifter
Axle/Gears: DANA 44, Tru Trac, 3:73 gears
Re: IROC extractor hood

A successful test fit, it’s as if it was made for the car.



I’m very happy with how well it fits
The following 2 users liked this post by soloc4:
dmccain (05-04-2022), zoidberg355 (04-05-2023)
Old 05-03-2022, 07:26 PM
  #14  
Supreme Member

iTrader: (11)
 
DynoDave43's Avatar
 
Join Date: Aug 2013
Location: MICHIGAN
Posts: 4,643
Received 754 Likes on 580 Posts
Car: 1988 Trans Am
Engine: L03
Transmission: 700R4
Axle/Gears: 10 Bolt 2.73 Open
Re: IROC extractor hood

So those extractors are falling inside the "triangle" of the strut tower brace with the hood closed?
Old 05-05-2022, 05:05 AM
  #15  
TGO Supporter

Thread Starter
 
soloc4's Avatar
 
Join Date: Nov 2003
Location: Lake Stevens, WA
Posts: 406
Received 229 Likes on 131 Posts
Car: 84 Z28, 92 C4 suspension F&R, ABS
Engine: 408 LS2, CNC LS3 heads, Comp Cam
Transmission: Magnum F, RTX clutch, Tick shifter
Axle/Gears: DANA 44, Tru Trac, 3:73 gears
Re: IROC extractor hood

Originally Posted by DynoDave43
So those extractors are falling inside the "triangle" of the strut tower brace with the hood closed?
No, they are forward of the brace. There is a 3 1/2" gap between the forward edge of the intake tube and the aft edge of the radiator shroud and this is where the duct openings are. They also happen to align with the cooling fans. on the radiator. I should take a picture of this with the hood closed to illustrate it.
The following users liked this post:
DynoDave43 (05-11-2022)
Old 05-11-2022, 06:15 PM
  #16  
Supreme Member

iTrader: (11)
 
DynoDave43's Avatar
 
Join Date: Aug 2013
Location: MICHIGAN
Posts: 4,643
Received 754 Likes on 580 Posts
Car: 1988 Trans Am
Engine: L03
Transmission: 700R4
Axle/Gears: 10 Bolt 2.73 Open
Re: IROC extractor hood

That makes more sense. It was just hard to visualize. With the radiator hose/pipe running through, I was having a hard time imagining it clearing.
Old 10-09-2022, 09:27 PM
  #17  
TGO Supporter

Thread Starter
 
soloc4's Avatar
 
Join Date: Nov 2003
Location: Lake Stevens, WA
Posts: 406
Received 229 Likes on 131 Posts
Car: 84 Z28, 92 C4 suspension F&R, ABS
Engine: 408 LS2, CNC LS3 heads, Comp Cam
Transmission: Magnum F, RTX clutch, Tick shifter
Axle/Gears: DANA 44, Tru Trac, 3:73 gears
Re: IROC extractor hood



I’ve gotten a few things in epoxy primer
Old 10-11-2022, 11:20 AM
  #18  
Supreme Member

iTrader: (4)
 
RubberDucky's Avatar
 
Join Date: Mar 2009
Location: Florida
Posts: 2,035
Received 28 Likes on 16 Posts
Car: 1989 Camaro RS
Engine: LH6
Transmission: T56
Axle/Gears: 3.42 Auburn Posi
Re: IROC extractor hood

Have you thought about putting those IROC louvers that are cut out over top? Give it a factory look but some real function.
Old 10-11-2022, 05:11 PM
  #19  
TGO Supporter

Thread Starter
 
soloc4's Avatar
 
Join Date: Nov 2003
Location: Lake Stevens, WA
Posts: 406
Received 229 Likes on 131 Posts
Car: 84 Z28, 92 C4 suspension F&R, ABS
Engine: 408 LS2, CNC LS3 heads, Comp Cam
Transmission: Magnum F, RTX clutch, Tick shifter
Axle/Gears: DANA 44, Tru Trac, 3:73 gears
Re: IROC extractor hood

Originally Posted by RubberDucky
Have you thought about putting those IROC louvers that are cut out over top? Give it a factory look but some real function.
No! I could have put TrackSpec grills on this like everyone else has done and it would have been a lot easier. As far as opening up the IROC inserts, it’s been done by a good friend of mine and we will be side by side at some shows in the future.

BajaDaze IROC hood

I have made matching grill inserts for the front bumper and the hood to complete the look.

Matching stainless steel grills

The final product will be unique look for a one of a kind build.
Old 10-12-2022, 06:05 PM
  #20  
Senior Member

 
Arctic White 91 RS's Avatar
 
Join Date: Apr 2000
Location: MidWest
Posts: 681
Received 24 Likes on 18 Posts
Car: 91 RS/ 99 T/A/ 72 Vette/ 02 Z28
Engine: LSx/ Dart400
Transmission: M6/ M6/ TH400/ 4L60E
Axle/Gears: 4.10's / 3.08/ 2.73
Re: IROC extractor hood

Looking fantastic!
A++
Old 10-12-2022, 11:31 PM
  #21  
Junior Member

 
1965gp's Avatar
 
Join Date: Nov 2013
Posts: 29
Received 19 Likes on 6 Posts
Re: IROC extractor hood

This is really a fantastic take on the Iroc hood
Old 04-05-2023, 07:10 PM
  #22  
TGO Supporter

Thread Starter
 
soloc4's Avatar
 
Join Date: Nov 2003
Location: Lake Stevens, WA
Posts: 406
Received 229 Likes on 131 Posts
Car: 84 Z28, 92 C4 suspension F&R, ABS
Engine: 408 LS2, CNC LS3 heads, Comp Cam
Transmission: Magnum F, RTX clutch, Tick shifter
Axle/Gears: DANA 44, Tru Trac, 3:73 gears
Re: IROC extractor hood


Final update to this thread. The grills have been installed and the hood is ready to be installed on the car.

Last edited by soloc4; 04-05-2023 at 07:14 PM.
The following 4 users liked this post by soloc4:
bluegrassz (04-06-2023), DynoDave43 (04-05-2023), WildCard600 (04-05-2023), zoidberg355 (04-05-2023)
Old 04-05-2023, 07:26 PM
  #23  
Supreme Member

 
skinny z's Avatar
 
Join Date: Dec 2005
Location: Alberta
Posts: 9,179
Received 639 Likes on 539 Posts
Re: IROC extractor hood

Well thought out.
Well executed.
I'd be keen to see something with the hood up. It's been a while.
What's the cold air intake comprised of again? Reminds me of some Corvette details I saw years back with the CAI over the rad (not unlike the TPI setup) and the hood designed to allow the radiator to vent through the cut outs in the hood. Much like your design. (I apologize if I covering old ground).

EDIT: I see your CAI looks to be off to one side. Is that correct?
Old 04-06-2023, 10:22 PM
  #24  
TGO Supporter

Thread Starter
 
soloc4's Avatar
 
Join Date: Nov 2003
Location: Lake Stevens, WA
Posts: 406
Received 229 Likes on 131 Posts
Car: 84 Z28, 92 C4 suspension F&R, ABS
Engine: 408 LS2, CNC LS3 heads, Comp Cam
Transmission: Magnum F, RTX clutch, Tick shifter
Axle/Gears: DANA 44, Tru Trac, 3:73 gears
Re: IROC extractor hood

Originally Posted by skinny z
Well thought out.
Well executed.
I'd be keen to see something with the hood up. It's been a while.
What's the cold air intake comprised of again? Reminds me of some Corvette details I saw years back with the CAI over the rad (not unlike the TPI setup) and the hood designed to allow the radiator to vent through the cut outs in the hood. Much like your design. (I apologize if I covering old ground).

EDIT: I see your CAI looks to be off to one side. Is that correct?
Yes, the CAI is on the right side battery tray. The air comes in from the enlarged side opening. The ABS system is in the left side battery tray, so I went with a single 4” intake tube. The inspiration for the hood came from the GT40, but not intended to be a full race aero. The ZL1 hood is not fully ducted and it provides additional downforce at high speeds, but I’m not sure that will ever be tested on this car.
The following users liked this post:
skinny z (04-07-2023)
Old 04-12-2023, 10:35 PM
  #25  
TGO Supporter

Thread Starter
 
soloc4's Avatar
 
Join Date: Nov 2003
Location: Lake Stevens, WA
Posts: 406
Received 229 Likes on 131 Posts
Car: 84 Z28, 92 C4 suspension F&R, ABS
Engine: 408 LS2, CNC LS3 heads, Comp Cam
Transmission: Magnum F, RTX clutch, Tick shifter
Axle/Gears: DANA 44, Tru Trac, 3:73 gears
Re: IROC extractor hood


Here is a POV of the grills from the drivers seat.
The following 3 users liked this post by soloc4:
1989karr (04-13-2023), KITT87 (04-16-2023), skinny z (04-15-2023)
Old 08-04-2023, 10:32 AM
  #26  
TGO Supporter

Thread Starter
 
soloc4's Avatar
 
Join Date: Nov 2003
Location: Lake Stevens, WA
Posts: 406
Received 229 Likes on 131 Posts
Car: 84 Z28, 92 C4 suspension F&R, ABS
Engine: 408 LS2, CNC LS3 heads, Comp Cam
Transmission: Magnum F, RTX clutch, Tick shifter
Axle/Gears: DANA 44, Tru Trac, 3:73 gears
Re: IROC extractor hood



A couple of pictures with the hood on the car
The following users liked this post:
IROCZman15 (08-09-2023)
Old 08-10-2023, 06:14 PM
  #27  
COTM Editor

 
alan91z28's Avatar
 
Join Date: Oct 2008
Location: PA
Posts: 1,289
Received 185 Likes on 125 Posts
Car: 91/89/85/82 Z28s, 88 TA, 88/88 SC
Engine: SBC and LS variations
Re: IROC extractor hood

Fantastic!

Originally Posted by soloc4


A couple of pictures with the hood on the car
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Psycho_91Camaro
Fabrication
123
08-06-2012 07:42 PM
WickedCrazy
Fabrication
13
03-15-2012 01:02 AM
INTIMIDATOR Z
Members Camaros
12
08-31-2011 01:05 PM
Grifter757
Members Camaros
30
01-29-2008 04:56 PM
Demon Z28
Pacific Northwest Region
7
07-03-2001 07:52 AM



Quick Reply: IROC extractor hood



All times are GMT -5. The time now is 06:02 AM.