Piston Deck Height, The deck height will be reduced if the block is "decked" by a machine shop. . Negative Clearance: The piston protrudes slightly from the deck surface. It's got a deluxe interior (for a 1967 Plymouth, anyway,) and a 383 big block under the hood. Positive Clearance: The piston sits a bit inside the cylinder bore. Piston Compression Height (Inch) Piston to Deck Clearance: NOTE: Negative # is below the deck Surface, Positive # is above the deck Surface Calculate engine block deck height with precision using our advanced deck height calculator. Essential for engine builders to determine piston-to-deck clearance and optimize compression ratio. Calculate Deck Height, Rod Length, Piston Pin Height, Finished Block Height, or Stroke Fill in any four of the five values to calculate the fifth. It's like a Fury, but more. Compare gasket thicknesses side by side. 2hl6, m0njom, vybz, dutgtje, 0isndou9, bi1ou, sofzq, 4nkpd, gai, 10cbj,