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Percy Deadsoft Alum Header Gasket?

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Old Oct 22, 2006 | 08:31 PM
  #1  
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Percy Deadsoft Alum Header Gasket?

I was always told the only dumb question is the one not asked, SO. Which direction do you install Percy's deadsoft alum headers gaskets? I mean when you look at the gasket there are two pieces that are spot welded together. One face is planer and the other side has a raised parameter. ??? I'd just rather ask then install and find out later I f***ed up.
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Old Oct 22, 2006 | 08:44 PM
  #2  
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From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
i always put the raised portion pointing towards the headers, but i don't think there is a wrong way to install them
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Old Oct 22, 2006 | 10:26 PM
  #3  
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From: Winston salem, NC
Car: 1987 1SICIROC.....1999 TransAm
Engine: 385 HSR.....LS1
Transmission: 700R4 with Midwest 3400 2.4str...M6
Axle/Gears: SLP Zexel Posi unit 3.42's...3.73's
dont think they wont leak..cause they will, I blew out 2 sets on my old 305 attached with SLP tri-y's
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Old Oct 23, 2006 | 12:45 AM
  #4  
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From: Schererville , IN
Car: 91 GTA, 91 Formula, 89 TTA
Engine: all 225+ RWHP
Transmission: all OD
Axle/Gears: Always the good ones
I'll second that.

They almost seem worse for seal than regular gaskets to me.

Never had luck with them and have done quite a few header installs in my lifetime.

later
Jeremy
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Old Oct 24, 2006 | 06:39 PM
  #5  
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From: Winston salem, NC
Car: 1987 1SICIROC.....1999 TransAm
Engine: 385 HSR.....LS1
Transmission: 700R4 with Midwest 3400 2.4str...M6
Axle/Gears: SLP Zexel Posi unit 3.42's...3.73's
yep..they are a waste of $30 plus dollars!
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Old Oct 24, 2006 | 07:55 PM
  #6  
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Car: Used to drive a camaro
3.8 & Wish, you think there that bad huh? What do you suggest? I'm running Dart Iron heads and 2210 headers.
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Old Oct 25, 2006 | 07:11 AM
  #7  
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From: northern VA
Car: 91 B4C
Engine: L98
Ive had better luck with the solid copper gaskets than percey's aluminum ones on headers. But I do have their aluminum collector gaskets on some longtubes in a 67 pick up that have been leakfree for a couple years.
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Old Oct 29, 2006 | 08:23 PM
  #8  
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From: Pueblo Co
Car: 1989 C4
Engine: L98
Transmission: 700r4
Axle/Gears: 307
The Percy gaskets I have havent leaked in 5 years on the truck or 2 on the bird. I did have one rip apart on the truck but when you drop a u joint at 80 and all the bolts vibrate out it's not the gaskets fault.
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Old Oct 29, 2006 | 08:43 PM
  #9  
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From: Moneta, VA
Car: 89 formula 350
Engine: ls1 magnuson tvs2300 supercharger
Transmission: T56
Axle/Gears: 4.11 Dana 44!
they key to leak free header gaskets are stage 8 locking header bolts
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Old Oct 30, 2006 | 03:37 PM
  #10  
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From: CT
Car: 1986 Camaro SC
Engine: 305 TPI Procharged D1SC
Transmission: Tremec TKO-600
Axle/Gears: Moser 12 Bolt 3.73 posi
hey ac i forgot the exact model of mine, but they have those replacable inserts inside the gaskets, i havent had any problems with mine.
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