CBM MOTORSPORTS™ TWIN TURBOCHARGED 454 RHS LS

The CBM Twin Turbocharged 454 RHS LS is a 7.4 liter twin turbocharged LS, it puts out 1000+ rwhp @ 6600 RPM’s and 975 ft-lbs of torque with a compression ratio of 9.1.

This build features CBM ProX 6 bolt cylinder heads with Jesel Valve Train and a forged lower end – fully balanced and blue printed. All CBM engines are assembled and delivered with brand new components and parts. Images may contain upgrades.

Base Package Included Components:

• RHS 7.4L Block.
• Callies Magnum Crankshaft.
• Callies Ultra Connecting Rods.
• Race Tec or CBM/JE Forged Pistons.
• Total Seal file fit rings.
• ARP Main Studs.
• CBM/Comp Custom Grind Camshaft. (mild to wild your choice)
• CBM ProX Cylinder Heads w/Jesel Rockers.
• Manley Intake/Exhaust Valves.
• Manley Chromoly Push Rods.
• Manley Nextec .700″ dual spring kit.
• Johnson Short Travel Race Style Lifters.
• Chevrolet Performance or Moroso Oil Pan. (application dependent)
• Melling Oil Pump.
• CBM Mil Spec Wiring Harness.
• GM Coil Packs.
• CBM Ignition Wires.
• CBM Billet Valve Covers.
• CBM Coil Relocation Brackets.
• Delphi Alternator.
• Gates Water Pump.
• ATI Balancer.
• CBM Billet Manual Belt Tensioner.
• CBM Billet Fuel Rails, AN Fittings.
• Seimens 80lbs Fuel Injectors.
• Edelbrock Victor JR GM EFI Intake Manifold.
• CBM/Accufab Billet 105mm or Accufab 4150 4 Barrel Mechanical Throttle
• Body.
• Precision Turbo and Engine 62/66 Turbochargers.
• Turbosmart 50mm Wastegates.
• Turbosmart 38mm Blow Off Valves.
• Cometic, Mahle, GM Gaskets.

Component Upgrades Available:

• Callies Ultra Billet Crankshaft. 
• Manley Titanium Intake/Exhaust Valves 
• Dailey Engineering 5 Stage Dry Sump System 
• MSD Ignition Coil Packs 
• CBM Billet High Amp Alternator 
• F.I.C. 80lbs Fuel Injectors.
• Holley, FAST or CBM Intake Manifolds.

Each CBM Engine is made to order, pricing and packages may vary. Custom options are also available, we have clutch kits, transmission adapter plates, power steering components, complete fuel systems, accessory drive systems and data acquisition/display systems to fit your application.

Please call for current base package and upgrade pricing, availability and a lead time.

A $10.000 deposit required when ordering.

CBM Motorsports Engine Blueprinting Process:

• Engine block is fully deburred and inspected for flaws.
• Oiling holes are chamfered for improved oiling to bearings.
• Cylinders machined for rod clearance per application.
• Cylinders honed with torque plates for optimal clearance per application.
• Optimal cylinder geometry achieved with hone and surface finish verified with profilometer.
• Deck surfaces machined perpendicular to mains and deck height set for optimal quench.
• Block align honed and set to low of spec for maximum bearing crush.
• Cam bearings installed and test cam fitted to ensure smooth rotation.
• Crankshaft balanced within 1/2gm-in tolerance.
• Block and components deburred and cleaned after machining process.
• Connecting rod housing bores checked and adjusted for optimal roundness and size.
• Piston pin bores measured and adjusted for application.
• All main bearings and all rod bearing clearances measured and adjusted for application.
• All oil galley plugs and dowel pins installed.
• Piston rings are precision file fit per application.
• Final assembly of shortblock.
• All tolerances, clearances, machining specs, and part numbers are recorded and documented in build sheet.

Racing

Each CBM Engine is made to order, pricing and packages may vary. Custom options are also available, we have clutch kits, transmission adapter plates, power steering components, complete fuel systems, accessory drive systems and data acquisition/display systems to fit your application.

Please call for current base package and upgrade pricing, availability and a lead time.

A $10.000 deposit required when ordering.

CBM Motorsports™ products are warranted to be free from defects in material and workmanship for a period of 90 days from the date of purchase. CBM Motorsports™ electronic components and products are warranted to be free from defects in material and workmanship for a period of 30 days from the date of purchase. If the any part does not meet the limited warranty criteria an RMA number will have to be initiated to set up an exchange or refund.

The part must be returned to CBM with an RMA number assigned to it, and if it is in acceptable condition, CBM will issue credit directly to the customer. In addition, CBM Motorsports™  limited warranty specifically does not apply to products which have been modified or altered in any way, subjected to adverse conditions such as misuse, neglect, accident, improper installation or adjustment, dirt or other contaminants, water, corrosion or faulty repair, or used in racing activities or competitive  applications other than those recommended by CBM Motorsports™ . This warranty does not warrant and disclaims all liability for products used in racing activities and/or applications, other than those specifically recommended by CBM Motorsports™.