Page 426 - 2022-23 Auto Performance Drag Racing

2022-23
SB Chevy 350/400 23° Dome Pistons
High-compression pistons are compatible with
most stock, aftermarket, and angle-milled
cylinder heads. Valve reliefs accommodate
oversized valves and high lift cams. Requires
1/16" top, 1/16" second, and 3/16" oil rings. Sold in sets of eight with .927" x 2.750" (130 grams) wrist pins and double spiral locks.
BB Chevy Open Chamber Dome Pistons
Ideal for drag racing, open chamber dome pistons accept 1/16" top, 1/16" second, and 3/16" oil rings. Not compatible with Edelbrock #6040, #6045 or #6055 cylinder heads.
DRAG RACING
Part No.
350 Pistons
JEP182012 JEP182014 JEP182015 JEP182005 JEP182006
400 Pistons
JEP182067 JEP182053 JEP182058 JEP182033 JEP182038 JEP182024 JEP182069 JEP182036 JEP182041 JEP182027 JEP182037 JEP182042 JEP182028 JEP207513
Bore Stroke
4.030" 3.500" 4.040" 3.500" 4.060" 3.500" 4.030" 3.750" 4.040" 3.750"
4.125" 3.500" 4.125" 3.750" 4.125" 3.750" 4.125" 3.875" 4.125" 3.875" 4.125" 4.000" 4.155" 3.500" 4.155" 3.875" 4.155" 3.875" 4.155" 4.000" 4.165" 3.875" 4.165" 3.875" 4.165" 4.000" 4.185" 4.000"
Rod Length
6.000" 6.000" 6.000" 6.000" 6.000"
6.000" 6.000" 6.000" 6.000" 6.000" 6.000" 6.000" 6.000" 6.000" 6.000" 6.000" 6.000" 6.000" 6.000"
Comp. Ratio
12.8:1 13.2:1 13.2:1 13.4:1 13.7:1
13.8:1 13.1:1 14.1:1 13.5:1 14.5:1 13.5:1 13.8:1 13.2:1 14.1:1 13.5:1 13.3:1 14.1:1 13.5:1 14.8:1
Dome Volume
+13cc +13cc +13cc +9.5cc +11cc
+13cc +5.6cc +10.8cc +5.6cc +10.8cc +3cc +13cc +3cc +8cc +3cc +3cc +8cc +3cc +8cc
6.385" 14.3:1 45cc 6.385" 14.5:1 45cc 6.385" 14.6:1 45cc
Part No. JEP258238 JEP258239 JEP258240
Bore Stroke
4.500" 4.250" 4.530" 4.250" 4.560" 4.250"
Rod Comp. Dome
Length Ratio
Volume
Note: Compression ratios are based on a 118cc combustion chamber.
Pro Seal Premium Race Series Piston Rings
Top compression rings
are barrel-shaped duc-
tile iron with a plasma
moly coating. Second
rings are taper-faced
cast iron with a phos-
phate coating. Oil rings are standard-tension (unless speci- fied), chrome-plated carbon steel. All sets are .005" oversize, for a custom file fitting.
Part No. Bore Size JEPJG3108-4000-7 4.000"
Type
Moly Moly Moly Carbon Steel Moly
Moly Moly Moly Moly Moly Carbon Steel Moly
Carbon Steel Moly Moly Moly Moly Moly Moly Moly Moly Moly Moly Moly Moly Moly Moly Carbon Steel Carbon Steel
Top Ring
1.2mm 1/16" 1/16" 1.2mm 1/16" 0.043" 1/16" 1/16" 0.043" 0.043" 1.2mm 1/16" 1.2mm 1/16" 1/16" 1/16" 1/16" 1/16" 1/16" 1/16" 1/16" 1/16" 1/16" 1/16" 1/16" 1/16" .043" 0.043" 0.043"
Thickness
.042" .073" .073" .042"
2nd Ring
1.5mm 1/16" 1/16" 1.5mm 1/16" 0.043" 1/16" 1/16" 0.043" 0.043" 1.5mm 1/16" 1.5mm 1/16" 1/16" 1/16" 1/16" 1/16" 1/16" 1/16" 1/16" 1/16" 1/16" 1/16" 1/16" 1/16" 1/16" 1/16" 0.043"
Oil Ring
3.0mm 3/16" 3/16" 3mm 3/16" 3.0mm 3/16" 3/16" 3.0mm 3.0mm 3.0mm 3/16" 3mm 3/16" 3/16" 3/16" 3/16" 3/16" 3/16" 3/16" 3/16" 3/16" 3/16" 3/16" 3/16" 3/16" 3/16" 3/16" 3.0mm
Notes: Compression ratios are based on a 64cc combustion chamber. All of the 350 pistons listed above, with the exception of JEP182005 and JEP182006, fit both 3.480" and 3.500" strokes.
SB Chevy 400 Extreme Duty 23° Inverted Dome Pistons
JEPJ100F8-4030-5 JEPJ10008-4030-5* JEPJG31F8-4030-2 JEPS100S8-4030-5 JEPJ71408-4030-5 JEPJ10008-4040-5* JEPJ100F8-4040-5 JEPJ71408-4040-5 JEPJ71408-4060-5 JEPJG31F8-4070-0 JEPJ10008-4125-5* JEPJ75008-4125-5 JEPJ100F8-4125-5 JEPJ10008-4145-5* JEPJ10008-4155-5* JEPJ100F8-4155-5 JEPJ10008-4165-5* JEPJ100F8-4185-5 JEPJ100F8-4310-5 JEPS100S8-4310-5 JEPJ100F8-4320-5 JEPJ10008-4350-5* JEPJ10008-4500-5* JEPJ100F8-4500-5 JEPJ100S8-4560-5 JEPJG8608-4600-5 JEPJG86H8-4610-5 JEPJG7708-4625-5
* Low-tension ring set.
4.030" 4.030" 4.030" 4.030" 4.030" 4.040" 4.040" 4.040" 4.060" 4.070" 4.125" 4.125" 4.125" 4.145" 4.155" 4.155" 4.165" 4.185" 4.310" 4.310" 4.320" 4.350" 4.500" 4.500" 4.560" 4.600" 4.610" 4.625"
For nitrous or forced induction, inverted dome pistons have .310" pocket depths and accept 1/16" top, 1/16" second and 3/16" oil rings. Sets of eight include wrist pins and double spiral locks.
Part No. Bore Stroke Rod Length JEP170818 4.155" 3.750" 6.000"
Comp. Ratio
9.2:1
Dome Volume
-28cc
Note: Compression ratios are based on a 64cc combustion chamber.
BB Chevy Inverted Dome Pistons
Fully compatible with forced induction or ni-
trous oxide, pistons feature an inverted dome
design for maximum efficiency and horse-
power. Suitable for open and closed chamber cylinder heads, pistons accept 1/16" top, 1/16" second, and 3/16" oil rings.
Part No. JEP257956 JEP257942
Bore
4.500" 4.500"
Stroke
4.000" 4.250"
Rod Comp. Length Ratio 6.135" 8.4:1 6.385" 8.4:1
Dome Volume -11.5cc -20cc
Note: Compression ratios are based on a 118cc combustion chamber.
BB Chevy Open Chamber Dome GP Pistons
The top choice for drag racing, big block
Chevy pistons are engineered for use with
open chamber cylinder heads, use a high-
compression dome design and feature
vertical gas ports for maximized combustion sealing. Pistons accept .043" top, .043" second, and 3mm oil rings. Sets of eight include wrist pins and double spiral locks.
Spiro and Wire Locks
Part No. JEP243331 JEP243332
Bore
4.600" 4.610"
Stroke
4.250" 4.250"
Rod Comp. Length Ratio 6.535" 14.8:1
6.535" 14.9:1
Dome Volume +46cc +46cc
Sold each.
Part No. JEP927-042-CS JEP927-073-AS JEP927-073-MW JEP990-042-CS
Description
Spiro Lock Spiro Lock Wire Lock Spiro Lock
Dia.
.927" .927" .927" .990"
Material
Carbon Steel Alloy Chrome Silicon Carbon Steel
Note: Compression ratios are based on a 118cc combustion chamber.
424