54903U Edelbrock RHS LS Aluminum Race Block (Ready to Hone) 9.250in
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  • Edelbrock RHS LS Aluminum Race Block (Ready to Hone) 9.250in Standard Deck - 4.120in Bore
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Edelbrock 54903U
Edelbrock RHS LS Aluminum Race Block (Ready to Hone) 9.250in Standard Deck - 4.120in Bore

Free Ground Shipping to USA (Lower 48)

2 sold in last 8 days
Edelbrock
54903U
EDE54903U
In stock
Engines

Not CARB compliant - cannot be shipped to California

$6,911.82
4 interest-free payments or as low as $1,727.95/mo with Shop Pay 4 installments. Prequalify now
Edelbrock - 54903U Engines
Block Specifications: Designed from heavy-duty A357-T6 aluminum material; 4.125”-4.165” siamese...
$6,911.82
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Description

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

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Installation Instructions
Product Specifications Sheet
  • 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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