CNC-Motorsports offers the best selection of 331 stroker kits. We offer street kits with pump gas pistons to wild fully forged rotating assembly kits to meet your racing needs. We offer quality name brands such as; Eagle, Scat, Callies, K1, JE/SRP, Diamond, Wiseco, Mahle CP and Keith Black to name a few. CNC-Motorsports can customize any 331 stroker kit to meet your specific needs. All balanced 331 rotating assembly kits are completed in house by CNC-Motorsports. If you don’t see the 331 kit you're wanting feel free to call or email our experienced staff today.
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ESP-16005 PART NUMBER
Eagle 16005 SB Ford 331 Street Strip Rotating Assembly, -16cc Mahle Dish Pistons$1,560.95
Ford 331 Street Strip Rotating Assembly, Cast Crankshaft 3.250 Stroke, 5.400 I-Beam Rods, Mahle Forged -16cc Dish Pistons, 1 or 2-PC Rear Seal, Piston Rings and Bearings Included
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ESP-16021 PART NUMBER
Eagle 16021 SB Ford 331 Street Strip Rotating Assembly, -10cc Keith Black Dish Pistons$1,311.95
Ford 331 Street Strip Rotating Assembly, Cast Crankshaft 3.250 Stroke, 5.400 I-Beam Rods, Keith Black Hypereutectic -10cc Dish Pistons, 1 or 2-PC Rear Seal, Rings and Bearings Included
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ESP-14005 PART NUMBER
Eagle 14005 SB Ford 331 Pro Competition Rotating Assembly, -16cc Mahle Dish PistonsSpecial Price $2,412.95 Regular Price $2,477.95
Ford 331 Pro Competition Rotating Assembly Kit, Eagle 4340 Forged Steel Crankshaft 3.250 Stroke, Eagle 5.400 H-Beam Rods, Mahle 4032 Forged -16cc Dish Pistons, Fits 1 or 2-PC Rear Seal, Rings and Bearings Included
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SCA-1-94105 PART NUMBER
Scat 1-94105 SB Ford 331 Street And Strip Performance Rotating Assembly - 9.6:1 Icon Dish Pistons$1,824.95
SB Ford 331, Scat 9000 Cast Steel Crankshaft 3.250 Stroke, Scat 5.400 I-Beam Rods, Icon Forged -12cc Dish Pistons
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SCA-1-94110 PART NUMBER
Scat 1-94110 SB Ford 331 Street And Strip Performance Rotating Assembly - 9.2:1 Mahle Dish Pistons$1,674.95
SB Ford 331, Scat 9000 Cast Steel Crankshaft 3.250 Stroke, Scat 5.400 I-Beam Rods, Mahle Forged -16cc Dish Pistons
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SCA-1-45205 PART NUMBER
Scat 1-45205 SB Ford 331 Street And Strip Performance Rotating Assembly - 9.0:1 Icon Dish PistonsSpecial Price $2,524.95 Regular Price $2,599.95
SB Ford 331, Rotating Assembly, Scat 4340 Forged Steel Crankshaft 3.250 Stroke, Scat 5.400 I-Beam Rods, Icon Forged -12.6cc Dish Pistons
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SCA-1-45210 PART NUMBER
Scat 1-45210 SB Ford 331 Competition Rotating Assembly - 9.0:1 Mahle Dish PistonsSpecial Price $2,536.95 Regular Price $2,611.95
SB Ford 331, Rotating Assembly, Scat 4340 Forged Steel Crankshaft 3.250 Stroke, Scat 5.400 H-Beam Rods, Mahle Forged -16.0cc Dish Pistons
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CNC-3311-TFS PART NUMBER
Eagle SB Ford 331 Competition Rotating Assembly, 9.4:1 SRP Pistons, Fits TFS HeadsSpecial Price $2,334.95 Regular Price $2,399.95
SB Ford 302/331 Rotating Assembly Kit, Eagle 4340 Forged Steel Crankshaft 3.250 Stroke, Eagle 5.400 H-Beam Rods, SRP 4032 Forged -12cc Dish Pistons, Fits 1 or 2-PC Rear Seal, Rings and Bearings Included, Pistons fit Trick Flow Twisted Wedge Heads
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CNC-3313-SRP PART NUMBER
Eagle SB Ford 331 Competition Rotating Assembly, 9.0:1 SRP PistonsSpecial Price $2,334.95 Regular Price $2,399.95
SB Ford 302/331 Rotating Assembly Kit, Eagle 4340 Forged Steel Crankshaft 3.250 Stroke, Eagle 5.400 H-Beam Rods, SRP 4032 Forged -15cc Dish Pistons, Fits 1 or 2-PC Rear Seal, Rings and Bearings Included, Fits stock and most aftermarket 20 degree inline valve heads
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ESP-64005 PART NUMBER
Eagle 64005 SB Ford 331 Pro Street Rotating Assembly, -16cc Mahle Dish PistonsSpecial Price $2,288.95 Regular Price $2,353.95
Small Block Ford 331 Pro Street Rotating Assembly Kit, Eagle 4340 Forged Steel Crankshaft 3.250 Stroke, Eagle 5.400 I-Beam Rods, 4032 Mahle -16cc Dish Pistons, Fits 1 or 2-PC Rear Seal, Rings and Bearings Included
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