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Edelbrock RHS LS Aluminum Race Block (Ready to Hone) 9.250in Standard Deck - 4.120in Bore
$6,906.81
Not sure it fits? Ask our fitment team — we check before it ships.
$6,906.81
$6,906.81
Tech Specs
- Brand
- Edelbrock
- SKU
- EDE54903U
- Manufacturer part number
- 54903U
- Category
- Engine Components › Engines
- Shipping weight
- 140.0 lb
- Availability
- Stocked
- EPA
- N/A
- CARB status
- Not CARB compliant — off-road or race use only
WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Block Specifications: Designed from heavy-duty A357-T6 aluminum material; 4.125”-4.165” siamese cast bore walls w/ press-in spun cast iron liner; Available in standard (9.240”) & tall (9.750”) deck heights w/ beefy .750” deck thickness; Both standard deck (5.67”/5.87”- same as LS7) & tall deck (5.94”/6.38”) cylinder liner lengths available; “Long arm friendly” – Accommodations for up to 4.6” stroke w/ standard rod pin diameters (2.100”) & oversized 60mm camshaft; Main cap surface area maximized at mating surface & large fillets from cap to cross bolts for added strength; Designed for clearance – side oil galley moved outboard & engineered rod clearance come standard; Significantly increased windage passage area under bores & around caps over LS7/LSX engines; 6 head bolt design w/ full water jacket around the cylinders (based on LS7 design); Bay-to-bay breathing improved w/ increased side window area versus LSX & LS7; Extra-large windows in valley for access to inboard “6th” head bolt; Extra-long liners for standard (5.87”) & tall (6.38”) decks
- P1 MFG main stud kit standard with enough material in castings to accommodate up to a 0.5 inch fastener
- Gen III/Gen IV compliant with race mounts for Gen I, Gen II, Gen III & Gen IV engines
- Rolled threads on all threaded holes for added strength
- Chilled main bearing bulkheads for added strength
- Optimized billet main caps & improved windage
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