Engines & Components

Crankshaft, Standard Weight, Forged 4340 Steel, 3.750 in. Stroke, Internal Balance, Chrysler, 383, 400, Each

Part Number: SCA-438310

Not Yet Reviewed

Estimated Ship Date: Jan 29, 2026 if ordered today

• Free Shipping
• $100 Summit Bucks
• Special Order

Engine Rotating Assembly, Street, Cast Crank, Hypereutectic Pistons, I-Beam Rods, Chevy, Small Block, Kit

Part Number: ESP-B15405L06053

Not Yet Reviewed

Estimated Ship Date: Jan 6, 2026 if ordered today

• Free Shipping
• Special Order

Crankshaft, 1-piece Seal, Internal Balance, Forged 4340 Steel, 4.125 in. Stroke, 2.100 in. Pin, Chevy, Each

Part Number: SCA-4LS141262

Not Yet Reviewed

Estimated Ship Date: Feb 9, 2026 if ordered today

• Drop Ship
• Free Shipping
• $100 Summit Bucks
• Special Order

Cylinder Heads, Maxx Series, Hydraulic Roller, Assembled, Aluminum, 183cc Intake Runner, Chevrolet, Small Block, Pair

Part Number: PMX-9183HR

Not Yet Reviewed

Estimated Ship Date: Jan 12, 2026 if ordered today

• Free Shipping
• Special Order

PROMAXX CYLINDER HEAD

Part Number: PMX-9200AHR

Not Yet Reviewed

Estimated Ship Date: Dec 10, 2025 if ordered today

• Free Shipping
• Special Order

CRANKSHAFT ASM

Part Number: ADO-12670965

Not Yet Reviewed

Estimated Ship Date: Dec 22, 2025 if ordered today

• Free Shipping
• $20 Summit Bucks
• Special Order

Engine Rotating Assembly, Street/Strip, Cast Crank, Hypereutectic Pistons, I-Beam Rods, Chevy, Small Block, Kit

Part Number: ESP-13004030

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

• Free Shipping
• Special Order

CYLINDER HEADS PAIR

Part Number: PMX-2181HR

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.210 in. Stroke, Pontiac, 455, Each

Part Number: ESP-445542106625

Not Yet Reviewed

Estimated Ship Date: Jan 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Engine Rotating Assembly, Street/Strip, Cast Crank, Hypereutectic Pistons, I-Beam Rods, Chevy, 5.7L, Kit

Part Number: ESP-13554L060

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

• Free Shipping
• Special Order

Cylinder Heads, Project X, Aluminum, Bare, 56cc Chamber, 210cc Intake Runner, Ford, Small Block, Pair

Part Number: PMX-9205

Not Yet Reviewed

Estimated Ship Date: Dec 10, 2025 if ordered today

• Free Shipping
• Special Order

Forged 4340 Standard Weight

Part Number: SCA-44294300

Not Yet Reviewed

Estimated Ship Date: Jan 29, 2026 if ordered today

• Free Shipping
• $100 Summit Bucks
• Special Order

Engine Rotating Assembly, Street/Strip, Cast Crank, Hypereutectic Pistons, I-Beam Rods, Chevy, Small Block, Kit

Part Number: ESP-13201030

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

• Free Shipping
• Special Order

Crankshaft, 2-Piece Seal, Internal Balance, 4340 Steel, 4.150 in. Stroke, Ford, 460, Each

Part Number: SCA-44604150

Not Yet Reviewed

Estimated Ship Date: Feb 3, 2026 if ordered today

• Drop Ship
• Free Shipping
• $100 Summit Bucks
• Special Order

Crankshaft, Internal Balance, Forged 4340 Steel, 4.050 in. Stroke, Dodge, 5.7L, 6.4L, Each

Part Number: ESP-439340506125

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Jan 5, 2026 if ordered today

• Free Shipping
• Special Order

Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.210 in. Stroke, 2.249 Rod Bearings, Each

Part Number: ESP-440042106625

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Crankshaft, Internal Balance, Forged 4340 Steel, 4.140 in. Stroke, Ford, 429, 460, Each

Part Number: ESP-446041402200

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

FORGED CRANKSHAFT

Part Number: SCA-4LT540065

Not Yet Reviewed

Estimated Ship Date: Feb 9, 2026 if ordered today

• Drop Ship
• Free Shipping
• $100 Summit Bucks
• Special Order

Crankshaft, Standard Weight, Forged 4340 Steel, 4.150 in. Stroke, Internal Balance, Chrysler, 383, 400, Each

Part Number: SCA-438320

Not Yet Reviewed

Estimated Ship Date: Feb 3, 2026 if ordered today

• Drop Ship
• Free Shipping
• $100 Summit Bucks
• Special Order

Cylinder Heads, Series One Series, Hydraulic Flat Tappet, Assembled, Aluminum, 175cc Intake Runner, Ford, Small Block, Windsor, Pair

Part Number: PMX-1102HF

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 12, 2026 if ordered today

• Free Shipping
• Special Order

CRANKSHAFT

Part Number: SCA-4LT541265

Not Yet Reviewed

Estimated Ship Date: Feb 3, 2026 if ordered today

• Drop Ship
• Free Shipping
• $100 Summit Bucks
• Special Order

Crankshaft, Standard Weight, Forged 4340 Steel, 4.000 in. Stroke, Internal Balance, Chevy, 454, Each

Part Number: SCA-445415C

Not Yet Reviewed

Estimated Ship Date: Feb 9, 2026 if ordered today

• Drop Ship
• Free Shipping
• $100 Summit Bucks
• Special Order

Engine Rotating Assembly, Street/Strip, Cast Crank, Hypereutectic Pistons, I-Beam Rods, Ford, Small Block, Kit

Part Number: ESP-16022000

Not Yet Reviewed

Estimated Ship Date: Dec 5, 2025 if ordered today

• Free Shipping
• Special Order

Cylinder Heads, 64cc, Assembled, Hydraulic Roller, Rect. Intake, Sq. Exhaust, 2.020/1.600 in. Valves, 0.6 in. Max Lift, Aluminum, Natural, Chevy, Pair

Part Number: PMX-2169HR

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 12, 2026 if ordered today

• Free Shipping
• Special Order

Cylinder Heads, Freedom Series Small Block Chevy Heads, Assembled, Aluminum, 64cc Chamber, 225cc Intake, Angle Plug, Chevrolet, Small Block, Pair

Part Number: PMX-2116

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 12, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order