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#1 |
Registered User
Join Date: Dec 2001
Location: Philadelphia, pa. U.S.A.
Posts: 87
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vortec heads- which head gasket?
1970 block, 1997 vortec heads. do I use the earlier gasket or a 96 up head gasket?
thank you |
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#2 |
Registered User
Join Date: Nov 2000
Location: Huntsville Ontario Canada
Posts: 4,052
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I have heard you should use the GM steel ones for vortec heads.
__________________
1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD |
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#3 |
Senior Member
Join Date: Mar 2000
Location: East Peoria, IL
Posts: 600
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i'm using fel-pro 1003, give me .041" quench distance (0 decked block)
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1968 C10 - 383, non-stop project 1969 Camaro - 327, bone stock family heirloom...soon to be LS/T56, Ridetech, all the goodies |
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#4 |
Registered User
Join Date: Apr 2000
Location: Frisco, Tx, USA
Posts: 606
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I got all my parts from www.Sallee-Chevrolet.com and would trust them to get you an accurate answer. I do remember they are fel-pro parts.
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http://home.comcast.net/~r.landrum/w...tos.html-.html '68 C-10 LWB, '98 Z-71 350 w/accessories (Serpentine), Edelbrock Performer, Edelbrock 1405 (600cfm) carb, GM HEI, CompCam Extreme 4x4 roller cam, Thorley Headers, Carter Electric Fuel Pump, Vintage Air, 700r4, 3.73, disc brakes and power steering upgrades. |
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#5 |
Fabricate till you "puke"
Join Date: Jun 2002
Location: Ill
Posts: 9,403
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If the decks of the block havent been cut, the tin shim gasket will give you a better quench distance.......however, if you arent sure if the decks are real flat GM puts out a .o28 thick composition gasket that would be better for sealing, & still keep the quench distance "liveable". ideallly, the quench should be in the .040-.o45 range, but in the real world ,you can live with a little more. anything over .060 on the quench will give you fits, but on a 9-9.5 comp ratio, you can live with .050-.055. good luck,crazyL
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