Today I was looking at a Hipo engine. Instead of the screw in studs they were pinned. I had never heard of those before. The same fellow also had a standard 289 head with a 20 casting . I was always told 19,20&21 nubers refered to hipo heads. Any comments?
New to me
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Unicorn -
April 5, 2011 at 9:56 PM -
Closed
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if the heads do not have factory cast in spring pockets and factory screw in studs they are not K code heads they are modified standard 289 heads, Chuck.Quote from UnicornToday I was looking at a Hipo engine. Instead of the screw in studs they were pinned. I had never heard of those before. The same fellow also had a standard 289 head with a 20 casting . I was always told 19,20&21 nubers refered to hipo heads. Any comments?
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You were not looking at a HiPo 289...or at least not a complete one.
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Do you have pictures of the "standard" head with the 20 casting?
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Use to pin rocker studs on Street Stock dirt track cars that had to use stock heads, that was an allowed mod but we couldn't use screw in studs.
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