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Vehicle Info NeededEDELBROCKPART NUMBER: 350-54903U
RHS LS Aluminum Race Engine Block, Standard Deck, 4.125 in. Bore Unhoned
$6,90495
Ships on 09/21/2026
Lowest Price GuaranteeLS Aluminum Race Engine Block, Standard Deck9.24 in. Deck Height Bored to 4.125 in. and Supplied Unhoned Six Bolt Main Bearing Caps Eight Cylinder Aluminum Construction Requires Final Honing before Assembly
The standard deck counterpart to the tall deck race block, at 9.24 in. rather than 9.76 in., which keeps stock-style LS geometry and accessory fitment while still bringing six-bolt main caps and race-grade material. It arrives bored but unhoned so final size is set with your piston and ring package in hand.
Edelbrock 54903U LS Race Block Specifications:
- Aluminum LS race block, eight cylinder.
- Standard deck at 9.24 in. deck height.
- 4.125 in. cylinder bore, supplied unhoned.
- Six main bearing cap bolts per cap.
- Bored and ready to hone, so final machining is required before assembly.
Part TypeEngine Block
BrandEDELBROCK
Package Height17.5
Package Width20.5
Package Length26.0
Weight140.0 PG
Part CategoryPerformance Parts
Main Bearing Cap Bolt Quantity6
Cylinder Quantity8
Cylinder Bore Diameter4.125
MaterialAluminum
Part FitmentSemi Universal
Deck Height9.24
Grade TypePerformance
Vendor Part Number54903U
Package Qty1
Package TypeEA
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