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Edelbrock RHS LS Aluminum Race Block (Ready to Hone) 9.750in Tall Deck – 4.120in Bore

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
This block has a 9.750 deck height with a 4.125 bore and a 6.38 cylinder sleeve length. Cylinder walls are Siamese cast with press-in cast iron sleeves. 12AN feeds for dry sumps. Aircraft-quality A357-T6 aluminum. 6-Head Bolt Design.
Bored and Ready To Hone.

  • 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

9,546.65 $

Out of stock
SKU 54901U
brand Edelbrock

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
This block has a 9.750 deck height with a 4.125 bore and a 6.38 cylinder sleeve length. Cylinder walls are Siamese cast with press-in cast iron sleeves. 12AN feeds for dry sumps. Aircraft-quality A357-T6 aluminum. 6-Head Bolt Design.
Bored and Ready To Hone.

  • 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

Specification

Weight 140 kg
Dimensions 26 × 20.5 × 17.5 cm
air_freight_prohibited

false
not_carb_approved

true
carb_acknowledgement_required

true
ltl_freight_required

false
prop_65

Y
part_type

automotive
epa

N/A
units_per_sku

1
upc

00036584209508
brand

Edelbrock
part_number

54901U

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