Dart LS Next Iron Pro Engine Block Skirted LS Chevy 4.000" Bore, 9.240" Deck Height

• Part Number # 31867112
• Material: Superior Strength 220 BHN Cast Iron
• Bore: 4.000" w/ 4.185” max bore
• Bore & stroke: 4.185” x 4.125" (Max recommended)
• Cam bearing bore ID: 2.2998" – 2.3002"
• Cam bearings: 55mm babbit Dart PN# 32210101-5 (Not included)
• Cam bearing O.S. +.010", +.020", and +.030" available
• Cam bearing press: .002" - .003"
• Camshaft position: Stock LS cam position
• Camshaft to crank ∅ 4.885"
• Camshaft snout: 1.565" O.D
• Cam Drive: Accepts belt drive (*machining required) or stock chain drive.
• Cam retaining plate: Dart cam retaining plate / Cover. Dart PN# 32226000
• Cam Plug snap ring: N/A
• Cubic inch: 454 cubic inch max
• Cylinder Wall Thickness: .215" @ 4.125" bore
• Deck Height: 9.240" w / extended cylinder barrels .375" at bottom.
• Deck Thickness: 5/8" (.625")
• Fuel Pump: Electric pump required
• Fuel Pump Pushrod: N/A
• Freeze Plugs: 1.500" diameter Dart PN# 32820000B (Qty 6)
• Lifter Bores: .8427" - .8437" up to .937" keyed w/ 1.062" dia. Bushing
• Main bearing size: 2.558" – 2.559" Dart PN# 9-MS2321H or 9-MS2321HX
• Main bearing bore: 2.7508" – 2.7512"
• Main caps: 4 bolt billet steel w/splayed centres & centre thrust
• Oil system: Low volume priority main oiling system w/single centre crossover
• Oil Pump: Melling or Stock LS oil pump
• Oil Filter: O.E.
• Oil Pan: O.E or Aftermarket
• Rear Main Seal Stock LS style with factory cover
• Serial No. Front passenger side below deck surface (XXXLSN)
• Sleeve OD: N/A
• Sleeve O.S. N/A
• Sleeve thickness: N/A
• Sleeve Length: N/A
• Starter: O.E.
• Main Studs: Inners – 7/16" x 3.600" Outer – 7/16" x 2.900"
• Studs heads: Call for application
• Stud holes, Head: 23 bolt pattern with 7/16", 3/8", and 8mm sizes
• Stud length in block: 1.000" of thread depth
• Timing chain/gears: 24x or 58x depending on application
• Timing Cover: Factory LS cover and front seal 2005 w/ cam sensor provision
• Torque Specs: All torque specifications w/ CMD #3 High Pressure Lube
• ½” = 105ft lbs 7/16" = 65 ft lbs 3/8" = 45 ft lbs 8mm = 22 ft lbs
• Weight: 227 lbs w/ main caps

Designed for high performance and heavy duty applications, the SHP LS Next PRO is the NEXT-LEVEL PERFORMANCE block for hot rodders, drag racers, circle track competitors, off-roaders, and high performance marine enthusiasts.