Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
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#22
04-23-2015, 02:55 AM
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Re: L78 Dyno
I would never deface a set of 840 or 291 heads by installing exhaust seats unless they were sunk, and only then I would install custom made small ID seats machined to size along with a one piece solid bronze guide honed to size with a very precise valve job, which would run easily on unleaded gas.
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