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-64031 PART NUMBER
Eagle 64031 SB Ford 331 Pro Street Rotating Assembly, -6.2cc Mahle Flat Top PistonsSpecial Price $2,229.95 Regular Price $2,279.95
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 -6.2cc Twisted Wedge Flat Top Pistons, Fits 1 or 2-PC Rear Seal, Rings and Bearings Included
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ESP-64006 PART NUMBER
Eagle 64006 SB Ford 331 Pro Street Rotating Assembly, -6cc Mahle Flat Top PistonsSpecial Price $2,229.95 Regular Price $2,279.95
Small Block Ford 302 Pro Street Rotating Assembly Kit, Eagle 4340 Forged Steel Crankshaft 3.250 Stroke, Eagle 5.400 I-Beam Rods, 4032 Mahle -6cc Flat Top Pistons, Fits 1 or 2-PC Rear Seal, Rings and Bearings Included
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ESP-64007 PART NUMBER
Eagle 64007 SB Ford 331 Pro Street Rotating Assembly, 7cc Mahle Dome PistonsSpecial Price $2,339.95 Regular Price $2,389.95
Small Block Ford 302 Pro Street Rotating Assembly Kit, Eagle 4340 Forged Steel Crankshaft 3.250 Stroke, Eagle 5.400 I-Beam Rods, 4032 Mahle +7cc Dome Pistons, Fits 1 or 2-PC Rear Seal, Rings and Bearings Included
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ESP-14007 PART NUMBER
Eagle 14007 Ford 331 Pro Competition Rotating Assembly, 7cc Mahle Dome PistonsSpecial Price $2,463.95 Regular Price $2,513.95
SBF 331 Pro Competition Rotating Assembly Kit, Eagle 4340 Forged Steel Crankshaft 3.250 Stroke, Eagle 5.400 H-Beam Rods, Mahle 4032 Forged +7cc Dome Pistons, Fits 1 or 2-PC Rear Seal, Rings and Bearings Included
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CNC-3480-CSM PART NUMBER
Callies Compstar SBF 331 Stroker Kit with Mahle 8.9:1 Pistons For Twisted Wedge Head$2,629.95
SB Ford 331 Stroker Rotating Assembly Kit, Compstar Crankshaft 3.400 Stroke, Compstar 5.400 H-Beam Rods, Mahle -16cc Dish Pistons, Fits 1 or 2-PC Rear Seal
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CNC-3477-MRM PART NUMBER
SB Ford 331 Pro Rotating Assembly with Molnar Crank & Rod, Mahle -6.5cc Flat Top Pistons$2,799.95
SB Ford 331 Stroker Rotating Assembly Kit, Molnar Crankshaft 3.250 Stroke, Molnar 5.400 H-Beam Rods, Mahle -6.5cc Flat Top Pistons,, Fits 1 or 2-PC Rear Seal
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CNC-3478-MRM PART NUMBER
SB Ford 331 Rotating Assembly with Molnar Crank & Rod, Mahle -16cc Dish Pistons$2,856.95
SB Ford 331 Stroker Rotating Assembly Kit, Molnar Crankshaft 3.400 Stroke, Molnar 5.400 H-Beam Rods, Mahle -16cc Dish Pistons,, Fits 1 or 2-PC Rear Seal
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CNC-3479-MRM PART NUMBER
SB Ford 331 Pro Rotating Assembly with Molnar Crank & Rod, Mahle 10.0:1 Pistons For Twisted Wedge Head$2,799.95
SB Ford 331 Stroker Rotating Assembly Kit, Molnar Crankshaft 3.400 Stroke, Molnar 5.400 H-Beam Rods, Mahle -6cc Flat Top Pistons,, Fits 1 or 2-PC Rear Seal
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