Dimensions Guide

The piston’s purpose is to relay the force from the gas to the crankshaft. The following are some of the more important specs in piston kits sold today.

Piston Engine Dimensions: Ross Racing Small Block Chevy Piston

Part 99450’s bore is 4.003 and the stroke is 3.480. The rod length is 5.700 and the dome height is -.090 and it is 428 grams. Part 92450 has a 4.020 bore, 3.480 stroke with a rod length of 5.700. The dome height is also -.090 and is 445 grams.

Part 90450 has a 4.030 bore, 3.480 stroke and a 5.700 rod length. The dome height is -.090 and is 456 grams. The 99527 has a 3.750 bore, 3.750 stroke and 5.700 rod. The bore height is -.120 and it is 500 grams. The 94450 has a 4.035 bore, 4.035 stroke and 5.700 rod. The dome height is -.090 and is 459 grams.

Piston Engine Dimensions: Ross HD Flat Top 22

Part 94455 has a 4.020, 3.480 stroke and 5.700 rod length and is 505 grams. Part 90455 also has 4.030 bore, 3.480 stroke and 5.700 long rod. It is 514 grams. Part 90465’s bore is 4.030 and the stroke is 3.480. The rod length is 6.000 and it is 469 grams.

Part 90455 has a 4.030 bore, 3.750 stroke and 5.565 rod length. It is 514 grams. Part 90755 has a 4.030 bore, 3.750 stroke and 5.700 rod length. It is 490 grams. The 90765 has 4.030 bore, 3.750 stroke and 6.000 rod length and is 486 grams. Part 92455 has a 4.035 bore, 3.480 stroke and 5.700 rod length. It is 509 grams.

Piston Engine Dimensions: ROSS Ludicrous Liteness

Part 99456 has a 4.003 bore, 3.480 stroke and rod length of 5.700. It is 399 grams. Part 99166 has a 4.003 bore, 3.480 stroke, rod length of 6.000 and 362 grams. Part 92456 has a 4.020 bore, 3.480 stroke, 5.700 rod length and 419 grams. As for part 92466, it has a 4.020 bore, 3.480 stroke, 6.000 rod length and is 376 grams.

The 90002 has a 4.030 bore, 3.480 stroke and 5.700 rod length. It is 433 grams. Part 90456 has a 4.030 bore, 3.480 stroke and 5.700 rod length; it is 428 grams. Part 90926 has a 90926 bore, 3.480 stroke, 5.700 rod and is 440 grams.

Piston Engine Dimensions: CP Bullet Flat Top SBC

Part BC 1020-STD has a 4.000 bore, 3.500 stroke and 6.000 rod. Part BC 1020-020 has a 4.020 bore, 3.500 stroke and 6.000 rod. The BC 1020-030 has a 4.030 bore, 3.500 stroke and 6.000 rod. The specs for the BC 1020-040 are 4.040 (bore), 3.500 (stroke and 6.000 (rod).

The BC 1020-060 has a 4.060 bore, 3.500 stroke and 6.000 rod. Part BC 1021-STD has a 4.000 bore, 3.480 stroke and 5.700 rod. The bore for BC 1021-020 is 4.020 and the stroke is 3.480. The rod is 5.700.

The piston engine dimensions set down here are only examples of what you will come across. Manufacturers use different specs for their piston engines.

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