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EGR blockoff plate

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Old Oct 14, 2001 | 05:10 AM
  #1  
Apeiron's Avatar
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
EGR blockoff plate

Anyone know where I can get a plate to eliminate the EGR valve on a stock manifold?
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Old Oct 14, 2001 | 11:30 AM
  #2  
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From: Homestead, Fla
I don't think anyone makes one...might even be illegal, sorta like selling gutted cats. I'm not sure.

What I *might* do if it were my car is take off the EGR, weld the passages closed, and bolt it back on looking visually untouched...not that I've ever done that or anything
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Old Oct 14, 2001 | 02:22 PM
  #3  
Biochem's Avatar
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From: This spot right here --->*
Car: 2002 SOM z28
Engine: LS1
Transmission: T-56
I took a beer can and cut out a piece about the right size and just slid it under the EGR valve like a gasket... Still looks functional (at least what is left of it after I modified it to fit with tall valve covers).

------------------
1984 z28 w/ a 357 cu in. monster engine which is looking like the posterchild for Edelbrock with the exception of the Holley 750vac... all the suspension stuff... 9-bolt posi disk is in...

-=ICON Motorsports=-
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Old Oct 14, 2001 | 03:00 PM
  #4  
Apeiron's Avatar
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Americans... so much misdirected creativity. Welcome to Canada, the whole point is to get RID of the valve, not make it look like its still functional.
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Old Oct 14, 2001 | 03:14 PM
  #5  
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From: Homestead, Fla
Then just cut the bell of the top of the valve, and the neck off the bottom, and either weld the passages closed or use Rays aluminum can gasket idea; use the iron base of the valve for a blockoff plate.

or..get a chunk of flat steel and cut out your own blockoff plate.
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Old Oct 15, 2001 | 08:52 AM
  #6  
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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 ZZ4 manifold comes with a block-off plate. You may be able to chase down the p/n and get it from a dealer. Check the service parts list on the GM Performance Parts crate engine site.

I happen to have one in the bucket of bolts under my workbench. Not quite sure I want to part with it yet.

With a piece of 1/4" plate stock, a cut-off wheel, die-grinder and drill, you could make your own using a gasket as a template.

------------------
82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. 2-1/2" cat-back, ZZ3 intake, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 CC system w/'87 LB9 block, ZZ3 cam, ported World 305 heads, Hooker 2055 headers, 3" Catco cat & 3" catback, restalled TC, Spohn SFCs).
57 Bel Air, my 1st car. '66 396, 9.7 CR forged TRWs, Weiand Action+, Holley 750VS w/4150 conversion, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlocks, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Idles smooth @ 600 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).
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Old Oct 16, 2001 | 06:26 PM
  #7  
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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
NEWS FLASH!

Summit, p/n WND-9007. $7.69 ea.
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Old Oct 16, 2001 | 10:08 PM
  #8  
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
That's what I'm looking for. I knew someone had to make one.
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Old Oct 20, 2001 | 08:40 PM
  #9  
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if you measure it, drawn it onto cardboard, the take it to a machine shop they will do it for $5. That's how I got mine. Works great and BETTER gas mileage.
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