Boost Ready 370 Engine

Description

A 9.5:1 compression ratio paired with 60 PSI hot cruise oil pressure produces 650 lb-ft continuous boost-rated torque to propel specialized high-output commercial pursuit and emergency vehicles using the Boost Ready 370 Forged Performance Engine engineered for extreme-duty commercial truck and security platforms requiring forced induction boost. This iron-block Gen IV LS platform restores immense cylinder pressure resistance and multi-shift endurance.

Cast from high-density gray iron, this 6.0-liter iron block is precision bored to 4.030 inches with thick cylinder bulkheads that resist boost deflection. A forged 4340 steel crankshaft with a 3.622-inch stroke turns within coated H-series bearings, linked to forged 4340 H-beam connecting rods and forged 2618 aluminum pistons with dish crowns. Decks receive an Ra 25 finish for MLS gasket sealing. Dry mass measures 520 lbs with a 6.0-quart capacity steel oil pan.

Key Features of Boost Ready 370

Specialized fleet managers buy Boost Ready 370 remanufactured engine packages to power high-output emergency pursuit trucks and armored security transport vehicles under heavy boost loads. Every remanufactured long block undergoes vacuum decay testing to guarantee total fluid circuit separation before crate departure.

• Forged 2618 alloy pistons resist thermal expansion and detonation scuffing under 20 PSI boost
• Forged 4340 H-beam connecting rods with ARP 2000 bolts resist extreme cylinder pressure spikes
• Hydraulic roller camshaft profiles optimize turbocharger spool and supercharger exhaust scavenging
• 0.0022 to 0.0028 inch main bearing clearances maintain solid hydrodynamic lubrication film strength
• Multi-layer steel cylinder head gaskets maintain combustion seals across extreme summer boost heat
• High-pressure high-volume internal gerotor oil pumps channel positive lubrication to hydraulic roller lifters
• Dynamic rotating balancing protects Boost Ready 370 driveline transmission parts from vibration

Boost Ready 370 Operational Limits

Operating lubricant pressure produces 25 to 32 PSI during warm idle and expands to 60 through 75 PSI at 3000 RPM cruise speeds. Thermostats regulate internal coolant flow between 185°F and 200°F to stabilize combustion heat transfer. This 370 cubic inch forced induction V8 supports 750 horsepower at 6200 RPM and 680 lb-ft continuous torque at 4500 RPM with a 9.5:1 compression ratio. Cylinder cranking pressure measures between 165 and 180 PSI across all eight chambers. The cooling system rejects 5200 BTU per minute during full boost operation.

Boost Ready 370 Crankshaft Alignment

A 6-bolt rear crankshaft flange mounts flush to heavy-duty 4L80E automatic transmission flexplates or manual flywheels. Measured crankshaft thrust endplay checks out between 0.0030 and 0.0070 inches. The 1.259-inch front crankshaft snout features a single keyway to position the timing crank gear, holding true supercharger or accessory drive serpentine belt pulley alignment.

Boost Ready 370 Fleet Protocols

Technicians must pre-lube the engine through the main oil gallery port on the front driver side before initial ignition startup. Use 15W-50 or 5W-40 full synthetic motor oil meeting high-zinc performance standards. This high-output engine is not engineered for naturally aspirated low-octane pump fuel, propane conversions, or marine salt water use.

• Inspect engine oil level and coolant recovery tank fluid each shift before vehicle dispatch
• Drain break-in motor oil and install fresh oil filter after 500 initial road miles
• Perform routine oil and filter changes every 3000 miles during severe commercial service

Boost Ready 370 Warranty Manifest

Commercial fleet purchasers receive a 3-Year / 100,000-Mile commercial fleet warranty covering structural casting and internal moving components. The heavy-duty wood crate contains one remanufactured long block engine, a complete engine install gasket set, spark plug well seals, front timing cover seals, dyno test documentation, and priming instructions.