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12-06-2010, 12:34 AM
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#1 |
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Registered User
Join Date: Dec 2008
Location: Ashland, KY
Posts: 700
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Head gaskets question
do i need to get bore specific head gaskets or will head gaskets for a 400 sbc support up to .030 over or do i need a to get head gaskets that have a max bore larger than the bore on my motor. Im asking this bc i have never had this motor apart and but im pretty sure that its stock bore with stock pistons
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68 C10 LWB 2/4 drop 406/th400/3.73posi 04 Silverado SS LQ9 6.0/4L65e/4.11posi AWD Last edited by BIGBLU 72; 12-06-2010 at 12:36 AM. |
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12-06-2010, 11:27 AM
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#2 |
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Registered User
Join Date: Jun 2010
Location: Upland Ca
Posts: 4,138
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Re: Head gaskets question
Stock head gaskets support the over bore. The Fel-Pro gasket package has the dimensions on it. I think the standard gasket bore size for a small block chevy is 4.100.
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1972 C10 SWB, Air, PS, PB, 350/350THM. Second owner. 1965 Corvette roadster, 44K miles, 327/365 SHP, 4 speed, side exhaust, knockoffs, teak, second owner (bought in 1970), Have ALL numbers matching components. My frame off restoration thread: http://67-72chevytrucks.com/vboard/s...d.php?t=556703 |
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12-07-2010, 12:23 AM
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#3 |
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60-66 Nut
  Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,246
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Re: Head gaskets question
You will have to get head gaskets specifically for a SB400. They have the steam holes unlike other SBC head gaskets. The bores of the gaskets will varl slightly. Just be sure you get gaskets with a bore bigger than what your block will be. And depending on what you're doing and how detailed you want to be, the compressed thickness is something to pay attention to as well.
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