Page 19 - Diamond Pistons
P. 19

Big Block Chevy
20° COMPETITION SERIES
• Designed for use with Brodix SR20 and Dart 20° cylinder heads
• Vertical gas ports for maximum ring seal
• Inboard forging design for maximum strength
• Suitable for small to medium nitrous applications
• Moly skirt coating for friction loss and skirt wear protection
• Premium .043mm x .043mm x 3.0mm ring package
• H-13 tool steel .185W wrist pins included
• Top ring down dimension: .295” - .280” on 1.065cd
• Will work with up to a intake valve size of 2.400” and exhaust valve size of 1.800”
• Valve pocket depth: 0.345” intake and -.030” exhaust
• Made from 2618 alloy
COMPRESSION RATIO
Bore Stroke Rod C.D. Weight Pin CC's 95cc Ring Set Part #
4.600 4.375 6.385 1.215 655 .990 x 2.750 27.94cc 15.3 09224600 21000
4.605 4.375 6.385 1.215 657 .990 x 2.750 27.94cc 15.3 09224600 21001
4.610 4.375 6.385 1.215 658 .990 x 2.750 27.94cc 15.3 09224610 21002
4.625 4.375 6.385 1.215 663 .990 x 2.750 27.94cc 15.4 09224625 21003
4.600 4.375 6.535 1.065 618 .990 x 2.750 27.94cc 15.3 09224600 21004
4.605 4.375 6.535 1.065 620 .990 x 2.750 27.94cc 15.3 09224600 21005
4.610 4.375 6.535 1.065 622 .990 x 2.750 27.94cc 15.3 09224610 21006
4.625 4.375 6.535 1.065 629 .990 x 2.750 27.94cc 15.4 09224625 21007
4.600 4.500 6.385 1.155 643 .990 x 2.750 27.94cc 15.8 09224600 21008
4.605 4.500 6.385 1.155 644 .990 x 2.750 27.94cc 15.9 09224600 21009
4.610 4.500 6.385 1.155 647 .990 x 2.750 27.94cc 15.9 09224610 21010
4.625 4.500 6.385 1.155 652 .990 x 2.750 27.94cc 16.0 09224625 21011
4.600 4.750 6.700 1.120 625 .990 x 2.750 27.94cc 16.9 09224600 21012
4.605 4.750 6.700 1.120 636 .990 x 2.750 27.94cc 17.0 09224600 21013
4.610 4.750 6.700 1.120 639 .990 x 2.750 27.94cc 17.0 09224610 21014
4.625 4.750 6.700 1.120 643 .990 x 2.750 27.94cc 17.1 09224625 21015
4.600 4.250 6.385 1.270 662 .990 x 2.750 27.94cc 14.6 09224600 21016
4.605 4.250 6.385 1.270 669 .990 x 2.750 27.94cc 14.6 09224600 21017
4.610 4.250 6.385 1.270 670 .990 x 2.750 27.94cc 14.7 09224610 21018
4.625 4.250 6.385 1.270 676 .990 x 2.750 27.94cc 14.7 09224625 21019
Optional H-13, M2 and TP-1 wrist pins available as a upgrade to any piston part number - Contact Diamond Pistons for tech assistance
DiamondRacing.net Tech support 586.792.6620
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COMPETITION SERIES


































































































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