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Using a high-dollar Serdi machine, Pete Hillemeyer masterfully cut the iron seats on our stock oval-port castings. Installing hardened inserts wasn't part of our plan; instead we dropped a lead additive to every fifth tank of gas to prevent seat recession.
Building An Affordable Big Block Chevy Engine - Budget Rat

Using a high-dollar Serdi machine, Pete Hillemeyer masterfully cut the iron seats on our stock oval-port castings. Installing hardened inserts wasn't part of our plan; instead we dropped a lead additive to every fifth tank of gas to prevent seat recession.  View Related Article

 

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