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06-13-2007, 07:54 PM
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#1 |
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Senior Member
Join Date: Mar 2003
Location: St robert Mo
Posts: 2,001
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header gaskets
I think I asked this before and never got a really straight answer. My heads have regtangular ports and my headers have oval ports I am going to use aluminium gaskets should I use 1.5 regtangular or oval?
Thanks
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1968 c10 lowered 3" 4" 355/Th400 built by Hatfield racing in joplin MO |
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06-13-2007, 10:49 PM
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#2 |
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Registered User
Join Date: Apr 2006
Location: MinneSNOWta
Posts: 1,381
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Re: header gaskets
personally, i would match the gasket to the head.
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2003 GMC Sierra 1500 WT 1995 Nissan Hardbody 2016 Hyundai Veloster Turbo DC2 (SW/AW) Clyde W. Harvey USN "Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery" Winston Churchill |
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06-14-2007, 07:01 AM
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#3 |
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67-72 Addict!
Join Date: Feb 2002
Location: The TAX State!
Posts: 7,857
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Re: header gaskets
My header gaskets are 6 years old and blown out. I need new ones and thought about trying stock manifold gaskets. Alot of people here swear by them but I've never used them with headers.
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Jim 1970 C/10 Fleetside w/Ghost Flames Lowered 4.5" front and 4" rear (Raked) 355/350 Turbo w/shift kit 10" Redneck Performance Verter w/2500 stall Hooker Super Comps part#2808-1 Performer RPM Air-Gap 12 Bolt w/3:73 gears- Eaton Posi Comp Cams XE262 with 1.6 Crane Energizers, Road Demon 625 and Brodix IK 180 heads |
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06-14-2007, 08:51 AM
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#4 |
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71 rustless in texas
Join Date: Aug 2004
Location: Houston, TX
Posts: 257
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Re: header gaskets
What BRAK said....
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"The secret to creativity is knowing how to hide your sources." "No one really listens to anyone else, and if you try it for a while you'll see why"  71 C-10 LWB presently in a perpetual state of disassembly '96 Toyota (my work car) '04 Mustang Convertable (wife's car & other money pit) Latest aquesition and why my trucks still in the garage covered with junk.. 2010 Aqua Blue metallic 6 speed Manual LS3 2SS/RS Camaro (I want one of these in my truck FAQ here VENDORS here SUPPORT THE BOARD here My second favorite SITE |
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06-14-2007, 10:29 AM
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#5 |
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Registered User
Join Date: Jan 2002
Location: Henderson, NV
Posts: 358
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Re: header gaskets
I have vortec heads which have square ports and the headers are round so I used aluminum square gaskets. They didn't work. I ended up using Mr Gasket round gaskets. They are for the vortec heads.
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1980 Chevy Shortbed Pickup 1969 Z28 engine Turbo 350 |
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06-14-2007, 02:14 PM
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#6 |
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Senior Member
Join Date: Mar 2003
Location: St robert Mo
Posts: 2,001
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Re: header gaskets
mixup did they not work because they were not for vortec heads or because they were square?
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1968 c10 lowered 3" 4" 355/Th400 built by Hatfield racing in joplin MO |
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06-14-2007, 10:20 PM
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#7 |
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Registered User
Join Date: Jan 2002
Location: Henderson, NV
Posts: 358
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Re: header gaskets
The vortec heads are square and don't look to much different from any other square smallblock head. I was told by more then one person to match the gasket to the head. I used Percys square aluminun gaskets and they didn't work.The Mr gasket gaskets I got were round and work perfect. If I ever change them again I might try the Percys round aluminun ones
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1980 Chevy Shortbed Pickup 1969 Z28 engine Turbo 350 |
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06-14-2007, 10:32 PM
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#8 |
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Registered User
Join Date: Aug 2006
Location: Bakersfield,CA
Posts: 7,893
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Re: header gaskets
use the manifold gaskets and match to the head
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-steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME |
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06-14-2007, 10:58 PM
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#9 |
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Senior Member
Join Date: Mar 2003
Location: St robert Mo
Posts: 2,001
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Re: header gaskets
mixup did they just leak really bad?
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1968 c10 lowered 3" 4" 355/Th400 built by Hatfield racing in joplin MO |
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06-15-2007, 01:12 PM
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#10 |
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Registered User
Join Date: Jan 2002
Location: Henderson, NV
Posts: 358
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Re: header gaskets
76Bonanza they leaked at every corner of the square. I think the round ones will work.
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1980 Chevy Shortbed Pickup 1969 Z28 engine Turbo 350 |
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06-15-2007, 03:58 PM
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#11 |
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Like a Rock!
Join Date: May 2002
Location: USA
Posts: 1,092
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Re: header gaskets
mine leak also.
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69 LWB Runs great - work in progress Mess with me and you mess with the whole trailer park! 
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06-15-2007, 04:11 PM
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#12 |
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I'M TRUCK CRAZY!
Join Date: Oct 2006
Location: Sachse, TEXAS
Posts: 1,737
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Re: header gaskets
I used stock manifold gaskets last time. The bolts would get lose and I wouldn't tighten them up like I should and they would finally blow out. I put stock back on again, just haven't started the truck yet. But I know they work. Well, I don't know what type heads I have. I didn't even pay attention. It's an 85 350
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