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 NUMBEREagle 16005 SB Ford 331 Street Strip Rotating Assembly 8.9 Mahle Dish Pistons$1,417.95Ford 331 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 Learn More
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ESP-16021 PART NUMBEREagle 16021 SB Ford 331 Street Strip Rotating Assembly 9.6 Keith Black Dish Pistons$1,250.95Ford 331 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 Learn More
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ESP-16006 PART NUMBEREagle 16006 SB Ford 331 Street Strip Rotating Assembly 10.0 Mahle Flat Top Pistons$1,343.95Ford 331 Rotating Assembly, Cast Crankshaft 3.250 Stroke, 5.400 I-Beam Rods, Mahle Forged -6cc Flat Top Pistons, 1 or 2-PC Rear Seal, Rings and Bearings Included Learn More
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ESP-14005 PART NUMBEREagle 14005 SBF 331 Competition Stroker Rotating Assembly 9.0 Mahle Dish PistonsSpecial Price $2,189.95 Regular Price $2,239.95Ford 331 Stroker 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 Learn More
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ESP-14006 PART NUMBEREagle 14006 Ford 331 Stroker Competition Rotating Assembly Kit 10.1 Mahle Flat Top PistonsSpecial Price $2,114.95 Regular Price $2,164.95SBF 331 Stroker Rotating Assembly Kit, Eagle 4340 Forged Steel Crankshaft 3.250 Stroke, Eagle 5.400 H-Beam Rods, Mahle 4032 Forged -6cc Flat Top Pistons, Fits 1 or 2-PC Rear Seal, Rings and Bearings Included Learn More
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ESP-14030 PART NUMBEREagle 14030 SB Ford 331 Competition Stroker Kit 8.9:1 Mahle Dish Pistons Fit Twisted Wedge HeadsSpecial Price $2,189.95 Regular Price $2,239.95Ford 331 Stroker 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 *Pistons Fit Trick Flow Twisted Wedge Cylinder Heads* Learn More
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ESP-14031 PART NUMBEREagle 14031 Ford 331 Competition Stroker Kit 10.0 Mahle Flat Top Pistons Fit Twisted Wedge HeadsSpecial Price $2,114.95 Regular Price $2,164.95Eagle SBF 331 Stroker Rotating Assembly Kit, Eagle 4340 Forged Steel Crankshaft 3.250 Stroke, Eagle 5.400 H-Beam Rods, Mahle 4032 Forged -6cc Flat Top Pistons, Fits 1 or 2-PC Rear Seal, Rings and Bearings Included *Pistons Fits Trick Flow Twisted Wedge Cylinder Heads* Learn More
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SCA-1-94055 PART NUMBERScat 1-94055 SB Ford 331 Street And Strip Performance Rotating Assembly - 9.8:1 Autotec Flat Top Pistons$1,246.95
9000 Cast Steel Crankshaft 3.250 Stroke, 5.400 I-Beam Rods, Autotec Forged -11cc Flat Top Pistons
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SCA-1-94060 PART NUMBERScat 1-94060 SB Ford 331 Street And Strip Performance Rotating Assembly - 10.4:1 Mahle Flat Top Pistons$1,367.959000 Cast Steel Crankshaft 3.250 Stroke, 5.400 I-Beam Rods, Mahle Forged -6cc Flat Top Pistons Learn More
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SCA-1-94105 PART NUMBERScat 1-94105 SB Ford 331 Street And Strip Performance Rotating Assembly - 9.6:1 Icon Dish Pistons$1,381.959000 Cast Steel Crankshaft 3.250 Stroke, 5.400 I-Beam Rods, Icon Forged -12cc Dish Pistons Learn More