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These Dynatech® header gaskets are manufactured at the highest quality for racing and high performance applications. They are CAD designed for the most precise fit possible. Fits Big Block Chevy 396-454 V-8 engines.
Sold in pairs.
Get your questions answered by the community. Ask or answer questions below.
what size hole?
Asked on 8/9/2011 11:48:57 AM by hotrodharley from spring creek nv
Per Dynatech, it is a 2.5" port size.
Answered on 8/11/2011 9:40:08 AM by Tech from Speedway Motors
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