SB Chevy Cast Iron w/ LS Heads

Cast Iron Small Block Chevy Block, Accepts LS Series Heads

The unique World Products Motown LS SBC block lets you utilize a full compliment of standard small block Chevy components with the  decided advantage of being able to employ high flowing LS-type cylinder heads. In addition to the internal components, the  World Products Motown LS allows use of expensive already-purchased Small Block Chevy items like pulley kits and external accessories. The block also boasts a coolant capacity in excess of 150 fluid ounces  to provide superior cooling.

THE WORLD PRODUCTS MOTOWN LS IS A UNIQUE ONE-OF-A-KIND BLOCK MADE ONLY BY WORLD PRODUCTS!

Note: When using LS-style heads on the Motown LS you must use an adapter on the heads to facilitate a return flow to the  radiator. The World Products Cooling Adapter also accommodates standard SBC  accessory brackets.

The latest design World Products Motown LS small block Chevy Hybrid engine block features a camshaft location which has been raised in the block by +.134″. The block now comes standard with a 55mm cam tunnel and cam cores are now readily available from Erson Cams at an affordable cost for this application. This design allows the use of both I-beam and H-beam connecting rods with a 4″ stroke crankshaft, and the large diameter cam core provides for exceptional valve train stability at high RPM operation. Bushed lifter bores are standard with a choice of .842″ or .904″ inner diameters. The Motown LS can be built with a carburetor or EFI induction. Deck height is a standard LS 9.240″. The special cylinder head and intake manifold adapter allows the use of a std distributor as a small block Chevy.  

Technical Information:   

• Material: High density cast iron  
• Deck Height: 9.240″ Stock LS deck height   
• Deck Thickness: .600″ Minimum
• Cam Bearings: 55mm babbit cam bearing bore   
• Cam Location: Raised +.134″ 
• Lifter Bores: Indexed .842″/.904″
• Main Bearings: Std Chevrolet (350 style)
• Bore Spacing: 4.400″
• Bore: 3.995″ or 4.120
• Maximum Bore: 4.200” 
• Cylinder Wall Thickness: .250” at 4.200” bore   
• Water Jackets: Expanded for better cooling  
• Lubrication: Priority main oiling system   
• Oil System Features: Integral boss for front feed, boss for rear scavenge, rear main cap can accept wet sump pump 
• Dip Stick: Driver Side   
• Filter: Integral mount for spin-on filter   
• Oil Pan Rails: Solid (stock width) clearanced for 4.000″ stroke
• Crank Clearance: 4.000″ Stroke (H-beam rods)
• Main Caps: Nodular or Billet steel splayed 4-bolt caps (2, 3,4) and straight 4-bolt caps (1, 5)   
• Main Cap Hardware: ARP and ring dowels used in addition to std OEM registers to locate main caps firmly into position
• Main Cap Locators: Stock and ring dowels at the center studs   
• Rear Main Seal: Two piece SB Chevy   
• Fuel Pump: Stock location SB Chevy   
• Motor Mounts: SBC motor mounts
• Cylinder Head Bolt Holes: Blind tapped to prevent water leaks   
• Clutch Linkage: Standard mounts   
• Starter Mount: Stock location   
• Weight: Approximately 200lbs.

ACCESSORIES FOR THE MOTOWN LS BLOCK:

• 703844 Valley plate for carburetor intake manifolds
• 703844-I Valley plate for LS EFI intake manifolds
• 703848-K Cylinder head end plates
• 703849-K Water return kit – Pro-Lok hose
• 703850-K Water return kit – Braided steel hose
• 705017 Cylinder head stud kit
• 8981TRC Billet timing chain
• 8981TARC Billet timing chain (adjustable)
• DURGMP55 Cam bearing set (babbit)