With the ultimate rod ratio in a 302 stroker the 1.696:1 331 stroker features the same offset wrist pin design as the venerable 347. It is also benefited by the 1650 gram (approximately) bob weight, making this stroker one of the best street and strip engines of all time.

331ci Street Performer

4.000 to 4.040 bore - 3.250 stroke - Flat top piston

• Cast steel crankshaft
• CNC Beam forged steel connecting rods
• Forged pistons
• Dished and Blower Dish pistons available
• hydraulic roller camshaft
• Edelbrock Performer cylinder heads

331ci Forged Performer

4.000 to 4.040 bore - 3.250 stroke - Flat top piston

• Forged steel crankshaft
• 4340 forged steel connecting rods
• Forged pistons
• Dished and Blower Dish pistons available
• hydraulic roller camshaft
• Edelbrock Victor Jr. cylinder heads

$5,599.99

• Kits include: crankshaft, connecting rods, pistons, wrist pins, rings, and rod and main bearings.

• Shortblocks include: all of the above installed in an appropriate engine block. The assembly is balanced and blueprinted.

• Longblocks include: all the above installed in or shortblocks  plus cam and fully assembled cylinder heads, head studs and head gaskets. Valvetrane components, intake, oil pan, valve covers, water pump sold separately.

• longblock head options also include: Roush 200, Performer RPM, DART Sr or Jr,  [other heads are available with additional cost. please call or email