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> MOTOWN LS Iron Block
MOTOWN LS Iron Block

The unique Motown LS 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 Motown LS allows use of expensive already-purchased items like pulley kits and external accessories. The block also boasts a coolant capacity in excess of 150 fluid ounces to provide superior cooling. Motown LS blocks are offered both bare and fully race-prepped for your convenience.

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

Note: The Motown block employs a standard SBC water flow path. When using LS-style heads on the Motown you must use an adapter on the heads to facilitate a return flow to the radiator. The World Products Cooling Adapter (p/n 061079) also accommodates standard SBC accessory brackets.


TECHNICAL SPECS

Casting ID Number: WOR-042A
Material: High density cast iron
Cam Bearings: Standard SB Chevy
Cam Location: Standard SB Chevy
Maximum Bore: 4.200”
Cylinder Wall Thickness: .250” at 4.200” bore
Deck Height: 9.240"
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
Filter: Integral mount for spin-on filter
Oil Pan Rails: Solid (stock width) clearanced for 4.000" stroke
Main Cap Material: Sportsman block caps are made from nodular iron, Race blocks are made from 1045 billet steel (unlike competitors’ softer 1020)
Main Caps: Sportsman and Race blocks have splayed 4-bolt caps (2, 3,4) and straight 4-bolt caps (1, 5)
Main Cap Hardware: 1/2" ARP and ring dowels used to locate main caps firmly into position (not antiquated standard OEM outside registers)
Rear Main Seal: Two piece SB Chevy
Fuel Pump: Stock location SB Chevy
Motor Mounts: Dual (frnt & side) SBC/ LS
Cylinder Head Bolt Holes: Blind tapped to prevent water leaks
Lifters Bosses: Clearanced for vertical bar lifters (can use std. height LS lifters)
Clutch Linkage: Standard mounts
Starter Mount: Stock location
Weight: Approximately 190lbs.


REQUIRES USE OF BLOCK KIT #703855-K


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MOTOWN LS Iron Block
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MOTOWN LS Iron Block MOTOWN LS Iron Block MOTOWN LS Iron Block
 
Product Video
 
product info
 
product variations
 
084080 MOTOWN LS Bare Block, 9.240" Deck, 3.995" Bore, 350 Mains
Splayed 4-Bolt Nodular Iron Caps
TO PURCHASE: Please "click" the small box to the right of the "BUY NOW" button first.
$2,362.62
 
 
 
084180 MOTOWN LS Bare Block, 9.240" Deck, 3.995" Bore, 350 Mains
Splayed 4-Bolt Steel Billet Caps
TO PURCHASE: Please "click" the small box to the right of the "BUY NOW" button first.
$2,803.27
 
 
 
084081 MOTOWN LS Bare Block, 9.240" Deck, 3.995" Bore, 350 Mains
Splayed 4-Bolt Nodular Iron Caps
TO PURCHASE: Please "click" the small box to the right of the "BUY NOW" button first.
$2,362.62
 
 
 
084181 MOTOWN LS Bare Block, 9.240" Deck, 4.120" Bore, 350 Mains
Splayed 4-Bolt Steel Billet Caps
TO PURCHASE: Please "click" the small box to the right of the "BUY NOW" button first.
$2,803.27
 
 
related products
 
703855K Motown LS Block Kit: Includes the following
Valley Cover Adapter, Valley Cover Plate,
Cylinder Head Coolant Adapter Plates,
Flat head screws, O Rings. TO PURCHASE:
Please "click" the small box to the right of the
"BUY NOW" button first.
 
 
703844K Motown LS Valley Cover Adapter (includes hardware)
TO PURCHASE: Please "click" the small box to the
right of the "BUY NOW" button first.
 
 
703845K Motown LS Valley Cover Plate (includes hardware)
TO PURCHASE: Please "click" the small box to the
right of the "BUY NOW" button first.
 
 
703848K Motown LS Cylinder Head coolant Adapter Kit
(includes hardware) TO PURCHASE: Please "click" the
small box to the right of the "BUY NOW" button first.
 
 
704843 704843 - Engine Horsepower CD - 427 Motown LS Street SBC/LS1 600HP
 
 
704844 704844 - Engine Horsepower CD - 427 Motown LS Race SBC/LS7 775hp