Asked in Chevy 350
Chevy 350

A 350 Chevy small block w flat tops punched 30 over is a what?

111213

Answer

User Avatar
Wiki User
02/05/2007

.030 over doesn't do much for you, but flat topped pistons will raise the compression and possibly make it difficult to purchase fuel. It will also increase the oxides of nitrogen in the emissions and increase the efficiency of the engine.