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#1
02-23-2007, 08:55 PM
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Which header gasket?
What would be a better gasket for my headers? Aluminum or copper? Also, What can I do to help prevent my bolts from backing out?
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89 Chevy K1500, Extended Cab, Long Bed, 5.7L, 700r4 tranny, 10 bolt rear Things Done- Flowtech Headers, Heartthrob Deep Tone Dual Exhaust, Airaid TBI Spacer, K&N Intake, 3" Performance Accessories Body Lift, 285 75 R16 Pro Comp A/T Tires, 16" Americain Racing Outlaw 2 Rims, Fabricated Bumper Replacement. 
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#2
02-24-2007, 12:57 AM
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Re: Which header gasket?
As far a the header gasket I would use what ever the manufacture of the header recommends. To keep the header bolts from backing out you can use loctite, but I wouldn't get any stronger than blue, incase you ever have to remove them.
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NO 4 N JUNK  1994 GMC K1500 XC 5.7L 2008 Chevy Impala LTZ
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#3
02-24-2007, 03:16 PM
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Re: Which header gasket?
The only reason im going with aluminum or copper is because im sick of the fiber ones blowing out.
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89 Chevy K1500, Extended Cab, Long Bed, 5.7L, 700r4 tranny, 10 bolt rear Things Done- Flowtech Headers, Heartthrob Deep Tone Dual Exhaust, Airaid TBI Spacer, K&N Intake, 3" Performance Accessories Body Lift, 285 75 R16 Pro Comp A/T Tires, 16" Americain Racing Outlaw 2 Rims, Fabricated Bumper Replacement.
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#4
02-24-2007, 08:09 PM
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Re: Which header gasket?
Does anyone know what the gasket exhaust port size is? Is it the 1 1/2" or the 1 5/8" for an 1989 Chevy K1500 5.7L 4x4
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89 Chevy K1500, Extended Cab, Long Bed, 5.7L, 700r4 tranny, 10 bolt rear Things Done- Flowtech Headers, Heartthrob Deep Tone Dual Exhaust, Airaid TBI Spacer, K&N Intake, 3" Performance Accessories Body Lift, 285 75 R16 Pro Comp A/T Tires, 16" Americain Racing Outlaw 2 Rims, Fabricated Bumper Replacement.
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#5
02-25-2007, 08:13 AM
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Re: Which header gasket?
I don't remember 'cause it's been a few years since I messed with them but the spare set I have in the garage measure 1 1/2" for my '88 K1500 350. I went with the reinforced gaskets (stamped steel between fiber) years ago and haven't had a blow out since. I don't remember if they're Mr Gasket or Felpro, but I got them locally.
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#6
03-01-2007, 08:30 PM
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Re: Which header gasket?
The stock gasket is 1 1/2". The headers im running right now require me to use the 1 5/8". Just thought I would confirm it for those who may need it in the future.
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89 Chevy K1500, Extended Cab, Long Bed, 5.7L, 700r4 tranny, 10 bolt rear Things Done- Flowtech Headers, Heartthrob Deep Tone Dual Exhaust, Airaid TBI Spacer, K&N Intake, 3" Performance Accessories Body Lift, 285 75 R16 Pro Comp A/T Tires, 16" Americain Racing Outlaw 2 Rims, Fabricated Bumper Replacement.
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