Availability
Crankshaft, 1-Piece Seal, External Balance, Forged 4340 Steel, 4.250 in. Stroke, 6.135 Rod, Chevy, 454, Each
Part Number: SCA-445420L
Not Yet Reviewed
Estimated Ship Date: Feb 2, 2026 if ordered today
Estimated Ship Date: Feb 2, 2026 if ordered today
Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.375 in. Stroke, 6.385 Rod, Chevy, 454, Each
Part Number: SCA-445426
Not Yet Reviewed
Estimated Ship Date: Feb 2, 2026 if ordered today
Estimated Ship Date: Feb 2, 2026 if ordered today
CHEVY 454 ROTATING ASSEMBLY
Part Number: ESP-35710060
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
4340 Forged Superlight
Part Number: SCA-445405C-3
Not Yet Reviewed
Estimated Ship Date: Feb 2, 2026 if ordered today
Estimated Ship Date: Feb 2, 2026 if ordered today
4340 Forged Superlight
Part Number: SCA-445430C-3
Not Yet Reviewed
Estimated Ship Date: Feb 2, 2026 if ordered today
Estimated Ship Date: Feb 2, 2026 if ordered today
Cylinder Heads, Aluminum, Assembled, 121cc Chamber, 340cc Intake Runner, Chevy, Big Block, Pair
Part Number: PMX-9341
Not Yet Reviewed
Estimated Ship Date: Dec 29, 2025 if ordered today
Estimated Ship Date: Dec 29, 2025 if ordered today
Accessory Drive System, Serpentine, 6-groove, Black Anodized Finished, Power Steering, Air Conditioning, Chevy, Big Block, Kit
Part Number: AAY-FDS-BBC-201
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Accessory Drive System, Serpentine, 6-groove, Polished Finished, Power Steering, Chevy, Big Block, Kit
Part Number: AAY-FDS-BBC-153
Not Yet Reviewed
Estimated Ship Date: Dec 8, 2025 if ordered today
Estimated Ship Date: Dec 8, 2025 if ordered today
Crankshaft, 2-Piece Seal, Internal Balance, 4340 Forged Steel, 4.50 in. Stroke, Standard Snout, Chevrolet, Big Block, Each
Part Number: HRS-45445006535
Not Yet Reviewed
Estimated Ship Date: Jan 16, 2026 if ordered today
Estimated Ship Date: Jan 16, 2026 if ordered today
Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.750 in. Stroke, 6.700 Rod, Chevy, 454, Each
Part Number: SCA-445440
Not Yet Reviewed
Estimated Ship Date: Feb 2, 2026 if ordered today
Estimated Ship Date: Feb 2, 2026 if ordered today
Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.000 in. Stroke, 6.385 Rod, Chevy, 454, Each
Part Number: SCA-445415
Not Yet Reviewed
Estimated Ship Date: Feb 2, 2026 if ordered today
Estimated Ship Date: Feb 2, 2026 if ordered today
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 2, 2026 if ordered today
Estimated Ship Date: Feb 2, 2026 if ordered today
Cylinder Head, Merlin, Cast Iron, Bare, 119cc Chamber, 320cc Intake Runner, Chevy, Big Block, Each
Part Number: WRL-030620
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Cylinder Heads, Aluminum, Assembled, 119cc Chamber, 320cc Intake Runner, Chevy, Big Block, Pair
Part Number: PMX-2211
Estimated Ship Date: Dec 31, 2025 if ordered today
Estimated Ship Date: Dec 31, 2025 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Cylinder Head, Merlin, Cast Iron, Assembled, 119cc Chamber, 320cc Intake Runner, Chevy, Big Block, Each
Part Number: WRL-030620M-2
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Crate Engine, Marine, Long Block, Assembled, External Balance, Reverse Rotation, Chevy, 454, Each
Part Number: HME-DM32
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Crankshaft, 2-Piece Seal, External Balance, Forged 4340 Steel, 4.250 in. Stroke, Chevy, 454, Each
Part Number: SCA-445425-2
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
4340 Forged Pro Series Lightweight
Part Number: SCA-445425C-2
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Cylinder Head, Merlin, Cast Iron, Assembled, 119cc Chamber, 320cc Intake Runner, Chevy, Big Block, Each
Part Number: WRL-030620-2
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Pulley Kit, Serpentine, Ultra Drive, Aluminum, Clear Powdercoated, Chevy, Big Block, Ultra, Kit
Part Number: MCH-20360
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Crankshaft, 1-Piece Seal, External Balance, Cast Steel, 4.25 in. Stroke, Chevy, 454, Each
Part Number: ESP-104564250
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Accessory Drive System, Serpentine, 6-groove, Clear Anodized, Power Steering, Air Conditioning, Chevy, Big Block, Kit
Part Number: AAY-FDS-BBC-901
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Engine and Transmission Combo, Builder Series, 632/815HP, Blackout Reaper, EFI, 4L80E , Aluminum Heads, 10.3L/632, Chevy Big Block, Kit
Part Number: MLL-B632FKB4L8X
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
COMPETITION ASSY CHEV 427/454 CLOSED CH.
Part Number: ESP-68308030
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
BALANCED PRO STREET ASSEMBLY CHEV 427
Part Number: ESP-B68211060
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Modal Header
Call To Order
This is a custom order part. You can order this part by Contacting Us.
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
