FORGED PISTONS
LS Series
Rod Length
Comp Ht.
Wrist Pin Type
Comp Ratio
Cubic Inch
Piston Ring Package
Part No.
Description
Stroke
3.780" Bore - Flat-Top ICNIC545C.STD
Premium, 2 Reliefs, -3cc Premium, 2 Reliefs, -3cc Premium, 2 Reliefs, -3cc FHR Series, 2 Reliefs, -2.9cc FHR Series, 2 Reliefs, -2.9cc FHR Series, 2 Reliefs, -2.9cc Premium, 2 Reliefs, -3cc Premium, 2 Reliefs, -3cc Premium, 2 Reliefs, -3cc FHR Series, 2 Reliefs, -2.9cc FHR Series, 2 Reliefs, -2.9cc FHR Series, 2 Reliefs, -2.9cc
3.622" 3.622" 3.622" 3.622" 3.622" 4.000" 3.622" 3.622" 3.622" 3.622" 3.622" 4.000"
6.098" 6.125" 6.098" 6.098" 6.125" 6.125" 6.098" 6.125" 6.098" 6.098" 6.125" 6.125" 6.098" 6.125" 6.125" 6.098" 6.125" 6.098" 6.098" 6.125" 6.125"
1.331" 1.304" 1.304" 1.331" 1.331" 1.115" 1.331" 1.304" 1.304" 1.331" 1.331" 1.115"
P/F P/F
9.1 @ 68.4cc 9.5 @ 68.4cc
327 1.2mm x 1.2mm x 3.0mm 327 1.2mm x 1.2mm x 3.0mm 327 1.2mm x 1.2mm x 3.0mm 327 1.5mm x 1.5mm x 3.0mm 327 1.5mm x 1.5mm x 3.0mm 359 1.5mm x 1.5mm x 3.0mm 327 1.2mm x 1.2mm x 3.0mm 327 1.2mm x 1.2mm x 3.0mm 327 1.2mm x 1.2mm x 3.0mm 327 1.5mm x 1.5mm x 3.0mm 327 1.5mm x 1.5mm x 3.0mm 359 1.5mm x 1.5mm x 3.0mm
ICNIC546C.STD ICNIC547C.STD ICNIC9985C.STD ICNIC9986C.STD ICNIC9987C.STD
P/F 10.1 @ 68.4cc
P/F P/F
9.5 @ 68.4cc 9.9 @ 64.5cc
P/F 10.8 @ 64.5cc
3.800" Bore - Flat-Top ICNIC545C.020
P/F P/F
9.1 @ 68.4cc 9.5 @ 68.4cc
ICNIC546C.020 ICNIC547C.020 ICNIC9985C.020 ICNIC9986C.020 ICNIC9987C.020
P/F 10.1 @ 68.4cc
P/F P/F
9.5 @ 68.4cc 9.9 @ 64.5cc
P/F 10.8 @ 64.5cc
NA/Boost/Nitrous, 2 Reliefs, -2.2cc, LS1/LS2/LS6 .927" Pin Dia.
WISK474M965
4.000"
1.300"
P/F
9.8 @ 66cc
5.3L/327 1/16". 1/16", 3.0mm
WISK473M965
Professional Ser. LS 5.3L, 2 Reliefs, -7cc 4.000"
1.110"
P/F
9.8 @ 66cc
327
1/16" x 1/16" x 3.0mm
3.810" Bore - Flat-Top ICNIC545C.030
Premium, 2 Reliefs, -3cc Premium, 2 Reliefs, -3cc Premium, 2 Reliefs, -3cc FHR Series, 2 Reliefs, -2.9cc FHR Series, 2 Reliefs, -2.9cc FHR Series, 2 Reliefs, -2.9cc
3.622" 3.622" 3.622" 3.622" 3.622" 4.000"
1.331" 1.304" 1.304" 1.331" 1.331" 1.115"
P/F P/F
9.1 @ 68.4cc 9.5 @ 68.4cc
327 1.2mm x 1.2mm x 3.0mm 327 1.2mm x 1.2mm x 3.0mm 327 1.2mm x 1.2mm x 3.0mm 327 1.5mm x 1.5mm x 3.0mm 327 1.5mm x 1.5mm x 3.0mm 359 1.5mm x 1.5mm x 3.0mm
ICNIC546C.030 ICNIC547C.030 ICNIC9985C.030 ICNIC9986C.030 ICNIC9987C.030
P/F 10.1 @ 68.4cc
P/F P/F
9.5 @ 68.4cc 9.9 @ 64.5cc
P/F 10.8 @ 64.5cc
3.898" Bore - Flat-Top MAH930217698 † 3.903" Bore - Dome-Top WPTPTS523A903 † 3.905" Bore - Flat-Top BTPBLS1112-007-8
2 Reliefs, -4cc
3.622"
6.098"
1.340"
P/F
10.4 @ 67cc
346
1.5mm, 1.5mm, 3.0mm
Pro Tru Street Ser, Domed, +4cc, .945" Pin Dia.
3.622"
6.098"
1.335"
P/F
10.7 @ 65cc
347
1/16", 1/16", 3.0mm
2 Reliefs, -2.7cc
3.622" 3.622" 3.622"
6.125" 6.098" 6.125" 6.098" 6.125"
1.305" 1.340" 1.314" 1.304" 1.110"
P/F P/F P/F P/F P/F
10.2 @ 64cc 10.1 @ 64cc 10.2 @ 65cc 9.9 @ 67cc 11.1 @ 64cc
347 347 347 347 383
1.5mm, 1.5mm, 3.0mm 1.5mm, 1.5mm, 3.0mm 1.0mm, 1.0mm, 2.0mm 1.2mm, 1.2mm, 3.0mm 1.5mm, 1.5mm, 3.0mm
MAH930217605 † MAH930217905 † WISK398X3905 BTPBLS1009-007-8
2 Reliefs, -4cc, LS1/LS2/LS6
2 Reliefs, -4.1cc
2 Reliefs, -3.2cc, LS1/LS2/LS3/LS6/L92 3.622"
2 Reliefs, -2.7cc
4.000"
3.908" Bore - Flat-Top MAH930217608 † 4.000" Bore - Flat-Top ICNIC551C.STD
2 Reliefs, -4cc
3.622"
6.098"
1.340"
P/F
10.4 @ 67cc
348
1.5mm, 1.5mm, 3.0mm
Premium, 2 Reliefs, -3cc
3.622" 3.622" 4.000"
6.125" 6.098" 6.125"
1.304" 1.340" 1.115"
P/F 10.3 @68.4cc
365 364 403
1.2mm, 1.2mm, 3.0mm 1.5mm, 1.5mm, 3.0mm 1.2mm, 1.2mm, 3.0mm
MAH930217700 † ICNIC552C.STD
2 Reliefs, -4cc
P/F
10.5 @ 67cc
Premium, 2 Reliefs, -4cc
P/F 11.3 @ 68.4cc
FHR Series, R & L Bank Pistons, .030" Offset Pin, 2 Reliefs, -3.3cc
ICNIC9991C.STD
4.000"
6.125"
1.115"
P/F 11.4 @ 68.4cc
403
1.5mm, 1.5mm, 3.0mm
4.000" Bore - Flat-Top ICNIC553C.STD 4.000" Bore - Dish-Top DSS1823BSX-4000 4.005" Bore - Dish-Top WISK444X05
Premium, Dished, -12.5cc
4.000"
6.125"
1.304"
P/F
9.9 @ 68.4cc
365
1.2mm, 1.2mm, 3.0mm
SX / Dished, -15cc, LS2
3.622"
6.125"
1.305"
P/F
9.48 @ 64cc
364
1.5mm, 1.5mm, 3.0mm
Dished, 2 Reliefs, -11cc, LS1/LS2/LS3/LS6/L92
3.622"
6.098"
1.300"
P/F
9.6 @ 67cc
365
1.2mm, 1.2mm, 3.0mm
Premium Coated Anodized, Boosted Appl. 15°, .030" Offset Pin, Dished -15cc Premium Coated Anodized, Boosted Appl. 15°, .030" Offset Pin, Dished -20cc Premium Coated Anodized, Boosted Appl. 15°, .030" Offset Pin, Dished -8cc
ICNIC529CAKTS.005 †
4.000"
6.125"
1.115"
P/F 10.0 @ 68.4cc
403
1.2mm, 1.2mm, 3.0mm
ICNIC532CAKTS.005 †
4.000"
6.125"
1.115"
P/F
9.6 @ 68.4cc
403
1.2mm, 1.2mm, 3.0mm
4.000"
6.125"
1.115"
P/F 10.8 @ 68.4cc
403
1.2mm, 1.2mm, 3.0mm
ICNIC533CAKTS.005 †
† Piston sets include piston rings. P/F - PRESS-FIT / FLOATING
156 2021-22 ENGINE BUILDER CATALOG
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