DART SHP LS Next Pro Engine Block 4.125" Bore, 9.240" Deck Height ~ Fully Skirted
DART SHP LS Next Pro Engine Block 4.125" Bore, 9.240" Deck Height ~ Fully Skirted
DART SHP LS Next Pro Engine Block 4.125" Bore, 9.240" Deck Height ~ Fully Skirted
DART SHP LS Next Pro Engine Block 4.125" Bore, 9.240" Deck Height ~ Fully Skirted
DART SHP LS Next Pro Engine Block 4.125" Bore, 9.240" Deck Height ~ Fully Skirted
DART SHP LS Next Pro Engine Block 4.125" Bore, 9.240" Deck Height ~ Fully Skirted
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DART SHP LS Next Pro Engine Block 4.125" Bore, 9.240" Deck Height ~ Fully Skirted

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$4,889.50
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DART SHP LS Next Pro Engine Block 4.125" Bore, 9.240" Deck Height ~ Fully Skirted

DART SHP LS Next Pro GEN III – Technical notes

  • Part Number # 31867212
  • Material: Superior Strength 220 BHN Cast Iron
  • Bore: 4.125" 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
  • 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.

FEATURES
• Superior strength 220 BHN Cast Iron.

• Steel 4-bolt main caps with upgraded
ARP main studs.

• Lifter oil crossover with restrictor provision.

• 6-bolt per cylinder capability.

• 4.000” up to 4.185” bore.

• Factory oil filter provision.

• Clearanced for centre counterweighted crankshafts.

• Full skirt design.

• Priority main oiling.

• Siamese cylinder bores.

• Thick decks ensure reliable head gasket seal.

• Parts kit included (PN: 32000018).