Page 410 - 2022-23 Auto Performance Drag Racing

2022-23
FHR Series Pistons
DRAG RACING
Affordable and durable, Forged Head Relief (FHR) 4032 alloy street/strip pistons accept 5/64" top, 5/64" second, and 3/16" oil rings (unless noted). Sets of eight include wrist pins and Tru-Arc lock rings.
Dome Comp. Ratio
9.8:1 9.8:1 9.6:1 11.8:1 11.7:1
9.5:1 9.5:1 9.5:1 9.5:1 9.5:1 9.5:1 10.4:1 10.4:1 10.4:1 11.4:1 11.4:1 11.4:1
10.8:1 10.8:1 9.0:1 9.6:1 10.6:1
Flat Top Head Volume
-6.4cc -6.4cc -18cc +6cc +5cc
-2.9cc -2.9cc -2.9cc -2.9cc -2.9cc -2.9cc -2.9cc -2.9cc -2.9cc -3.3cc -3.3cc -3.3cc
+18.3cc +18.3cc -3cc +17cc +41cc
Part No.
Description
Flat Top Flat Top Dish Top Dome Top Flat Top
Flat Top 5.3L Flat Top 5.3L Flat Top 5.3L Flat Top 5.3L Flat Top 5.3L Flat Top 5.3L Flat Top 5.3L Flat Top 5.3L Flat Top 5.3L Flat Top 6.0/6.2L Flat Top 6.0/6.2L Flat Top 6.0/6.2L
Dome Top Dome Top Flat Top Dome Top Dome Top
Bore Rod Length
4.030" 5.700" 4.040" 5.700" 4.030" 5.700" 4.030" 5.700" 4.155" 5.700"
3.780" 6.098" 3.800" 6.098" 3.810" 6.098" 3.780" 6.125" 3.800" 6.125" 3.810" 6.125" 3.780" 6.125" 3.800" 6.125" 3.810" 6.125" 4.000" 6.125" 4.020" 6.125" 4.030" 6.125"
4.280" 6.135" 4.310" 6.135" 4.280" 6.135" 4.155" 6.135" 4.155" 6.135"
Comp. Height
1.550" 1.550" 1.425" 1.550" 1.433"
1.331" 1.331" 1.331" 1.304" 1.304" 1.304" 1.115" 1.115" 1.115" 1.115" 1.115" 1.115"
1.645" 1.645" 1.645" 1.765" 1.765"
Small Block Chevrolet Gen. I 350-400
ICNIC9913.030 ICNIC9913.040 ICNIC9926.030 ICNIC9933.030 ICNIC9941.030
Small Block Chevrolet LS Gen. III/IV 5.3-6.2L
ICNIC9985C.STD* ICNIC9985C.020* ICNIC9985C.030* ICNIC9986C.STD* ICNIC9986C.020* ICNIC9986C.030* ICNIC9987C.STD* ICNIC9987C.020* ICNIC9987C.030* ICNIC9991C.STD* ICNIC9991C.020* ICNIC9991C.030*
Big Block Chevrolet 396-454
ICNIC9919.030 ICNIC9919.060 ICNIC9920.030 ICNIC9948.030 ICNIC9949.030
NOTES: Small block Chevrolet compression ratios are based on a 64cc combustion chamber. Small block Chevrolet Gen. III/IV LS compression ratios are based on a 68.4cc combustion chamber. Big block Chevrolet compression ratios are based on a 105cc combustion chamber. *Signifies pistons machined for 1.5mm (top), 1.5mm (second), and 3.0mm (oil) rings.
Premium Forged Series Pistons
Forged from 2618 or 4032 alloy, Premium series include all of the features of FHR pistons with the addition of precision, CNC-machined valve reliefs and crown, pressure fed oiling, and skirt and pin boss struts for added durability. Pistons listed accept 1/16" (top), 1/16" (second), and 3/16" (oil) rings unless noted. Sets of eight include wrist pins and spiral locks.
Step Dish Comp. Ratio
9.8:1 9.8:1 11.3:1
9.5:1 9.5:1 9.5:1 9.5:1 9.5:1 9.5:1 10.5:1 10.5:1 10.5:1 10.3:1 10.3:1 10.3:1 11.3:1 11.3:1 11.3:1 9.5:1 9.5:1 9.5:1
9.9:1 9.9:1 9.9:1
10.9:1
11.5:1
9.8:1
9.3:1
10.3:1 9.3:1
Top Dome Head Volume
-4.9cc -4.9cc +6.3cc
-3cc -3cc -3cc -3cc -3cc -3cc +5cc +5cc +5cc -4cc -4cc -4cc -4cc -4cc -4cc -12.5cc -12.5cc -12.5cc
+18cc +18cc +18cc
-4.5cc
+6.8cc
-16.3cc
-25cc
-5cc -4.5cc
Part No.
Description
Bore
4.030" 4.040" 4.040"
3.780" 3.800" 3.810" 3.780" 3.800" 3.810" 3.780" 3.800" 3.810" 4.000" 4.020" 4.030" 4.000" 4.020" 4.030" 4.000" 4.020" 4.030"
4.280" 4.280" 4.310"
4.350"
4.030"
4.160"
4.155"
4.180" 4.150"
Rod Length
5.700" 5.700" 5.700"
6.098" 6.098" 6.098" 6.125" 6.125" 6.125" 6.098" 6.098" 6.098" 6.125" 6.125" 6.125" 6.125" 6.125" 6.125" 6.125" 6.125" 6.125"
6.135" 6.135" 6.135"
6.768"
5.155"
6.490"
6.735"
6.630" 6.630"
Comp. Height
1.678" 1.678" 1.678"
1.331" 1.331" 1.331" 1.304" 1.304" 1.304" 1.331" 1.331" 1.331" 1.304" 1.304" 1.304" 1.115" 1.115" 1.115" 1.304" 1.304" 1.304"
1.765" 1.645" 1.645"
2.067"
1.608"
1.670"
1.750"
1.490" 1.720"
ICNIC792.030 ICNIC792.040 ICNIC793.040
Flat-Top Dome-Top
Flat Top
Small Block Chevrolet 350
Flat-Top
Small Block Chevrolet Gen. III/IV LS 5.3-6.2L
ICNIC545C.STD* ICNIC545C.020* ICNIC545C.030* ICNIC546C.STD* ICNIC546C.020* ICNIC546C.030* ICNIC547C.STD* ICNIC547C.020* ICNIC547C.030* ICNIC551C.STD† ICNIC551C.020† ICNIC551C.030† ICNIC552C.STD† ICNIC552C.020† ICNIC552C.030† ICNIC553C.STD† ICNIC553C.020† ICNIC553C.030†
Flat-Top 5.3L Flat-Top 5.3L Flat-Top 5.3L Flat-Top 5.3L Flat-Top 5.3L Flat-Top 5.3L Dome-Top 5.3L Dome-Top 5.3L Dome-Top 5.3L Flat-Top 6.0/6.2L Flat-Top 6.0/6.2L Flat-Top 6.0/6.2L Flat-Top 6.0/6.2L Flat-Top 6.0/6.2L Flat-Top 6.0/6.2L Dish-Top 6.0/6.2L Dish-Top 6.0/6.2L Dish-Top 6.0/6.2L
Dome-Top Dome-Top Dome-Top
Flat-Top Dome-Top Dish-Top Stepped Dish-Top Flat-Top
Big Block Chevrolet 427-454
ICNIC777.030 ICNIC779.030 ICNIC779.060
Big Block Chrysler 440
ICNIC822.030
Small Block Ford 302
ICNIC736.030
Big Block Ford "FE" 428
ICNIC581C.030
Oldsmobile 455
ICNIC887.030
Pontiac 400-455
ICNIC888.030 ICNIC890.030
Flat-Top
NOTES: Small block Chevrolet compression ratios are based on a 64cc combustion chamber. Small block Chevrolet Gen. III/IV LS compression ratios are based on a 68.4 combustion chamber. Big block Chevrolet compression rations are based on a 115cc combustion chamber (except ICNIC777.030, which is @ 108cc). Big block Chrysler compression ratio is based on a 78cc combustion chamber. Small block Ford compression ratio is based on a 58cc combustion chamber. Big block Ford "FE" compression ratio is based on a 75cc combustion chamber. Oldsmobile 455 compression ratio is based on a 80cc combus- tion chamber. Pontiac compression ratios are based on a 87cc combustion chamber. *Signifies pistons that accept 1.5mm (top), 1.5mm (second), and 3.0mm (oil) piston rings. †Signifies pistons that accept 1.2mm (top), 1.2mm (second), and 3.0mm (oil) piston rings.
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