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Pontiac 455
STREET/STRIP DISH SERIES
• 3D milling on piston crowns for ready to install  nish
• Valve pockets designed to work with OEM & aftermarket cylinder heads
• Top ring down dimension: .200”
• Ratios  gured for .040 head gasket @ 10.225 Deck
• Standard 1/16 x 1/16 x 3/16 ring package
• Premium 8620 .155W wrist pins included
• Valve pocket depth: 0.209” intake and sym exhaust
• Will work with up to a intake valve size of 2.150”
• Made from 4032 alloy and designed for applications up to 650hp
455 Block: 4.151 Std Bore 4.210 Std Stroke
COMPRESSION RATIO
Bore
Stroke
Rod
C.D.
Weight
Pin
CC's
72cc
77cc
87cc
Ring Set
Part #
4.155
4.250
6.800
1.280
call
-10.0cc
10.8
10.3
9.5
09024155
61010
4.165
4.250
6.800
1.280
call
.980 x 2.500
.980 x 2.500
-10.0cc
10.8
10.3
9.5
09024165
61011
4.185
4.250
6.800
1.280
call
.980 x 2.500
-10.0cc
10.9
10.4
9.6
09024185
61012
4.155
4.500
6.700
1.255
call
.990 x 2.500
-17.0cc
10.7
10.2
9.4
09024155
61013
4.165
4.500
6.700
1.255
call
.990 x 2.500
-17.0cc
10.7
10.3
9.5
09024165
61014
4.185
4.500
6.700
1.255
call
.990 x 2.500
-17.0cc
10.8
10.3
9.6
09024185
61015
All items in red are non-stocking parts, made-to-order as necessary
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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