Engineers at RHS® have designed a high performance aluminum engine block for GM LS applications to meet the needs of race and street performance engine builders alike. To go beyond the limitations of other existing LS blocks, the new RHS® LS Race Block is available in both standard deck and tall deck height configurations. Additionally, this innovative aluminum block features a raised cam center line and outboard priority main oiling to allow rod clearance for a 4.600” stroke and to minimize windage in the crankcase. And for quality control assurance, RHS® conducts a CT scan (similar to a medical CAT scan) on each block to ensure maximum casting precision and consistency. When you combine unmatched finishing quality with added clearance for increased stroke applications, precision computer aided design and extra surface material to allow custom machining, you get the new benchmark for LS horsepower, torque and durability. Additional details can be found here

Standard Items on ALL TurnKey Engines

• Street Package Includes
• Flywheel or Flex plate
• Starter
• Ceramic coated block hugger headers
• Complete Accessories
• Alternator
• Water Pump
• Serpentine Belt System
• Brackets and Tensioners
• Complete Ignition - 5-Wire Hook-Up
• Coil packs
• Spark plugs and wires
• ECM with TurnKey calibration
• Custom wiring harness
• Uses all OEM connectors
• Electric fan controls
• Fuse block and relays
• Complete Detail Package
• Engine oil and filter
• K&N air filter
• Hardware kit
• Motor mount bolts
• Oil temperature sending unit port
• Water temperature sending unit port
• Engine covers
• Throttle body
• Installation guide
• Complete AN Fitted Fuel System
• EFI fuel pump kit
• AN fitted fuel rails
• Pre-filter
• Post-filter
• Fuel pressure regulator
• AN-6 & AN-8 fittings
• O-rings & crush washers

Options

• AC $600
• Power Steering $400
• Chrome Retro fit kits for all early GM vehicles
• Engine Covers
• Custom Paint
• Motor Mount Kits
• Full Length headers
• Oil Pans
• Transmission controller

Not for sale or use in emission controlled vehicles