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when installing in afactoryPorsche case & heads
390L 254°/244°D
The heads can also be opened to 103 to accommodate the larger bore sizes
1 set of Piston Rings
and springs
86mm Porsche 356A & B Big Bore Piston & Cylinder Kit Forged when installing in afactoryPorsche caseThis is a new set of Big Bore 86mm Porsche 356 pistons and cylinders. It fits Porsche 356; A and B, Super 90, 1955 63 with the 3 piece Case. The Cylinders are Cast Iron with Graphite Coated Hypereutectic pistons with the 22 Angle, valve pockets, and the 22mm Pin. This kit requires no machine work, when installing in factory Porsche case & heads Engine size: 1600cc Engine size After Big Bore: 1700cc Stroke: 74mm Cylinders: Cast Iron Pistons:
