Chevy 4.8L V8 LS Remanufactured Engine – 2007-2009

Description

Prevent hydraulic roller lifter collapse and eliminate electronic throttle hesitation under 305 lb-ft continuous cargo pulling during demanding multi-stop municipal utility service shifts throughout this Chevy 4.8L LY2 Remanufactured Engine. Built for 2007 to 2009 commercial trucks, this Gen IV LY2 platform features 58X reluctor crank trigger management and non-AFM valvetrain architecture.

Constructed with a heavy-wall cast iron deep-skirt block, the unit sports an Ra 28 micro-inch deck surface. A micro-polished nodular iron crankshaft rotates within cross-bolted six-bolt main caps, connected to drop-forged powdered metal rods and flat-top hypereutectic pistons. Bores receive diamond plateau honing for oil film retention under load. Total dry weight stands at 440 lbs with six-quart crankcase capacity.

Key Features of Chevy 4.8L

Commercial logistics operations buy Chevy 4.8L long block engine packages to keep fleet parcel delivery step vans moving without unpredicted route disruptions. Rigid quality control testing guarantees long-term powertrain endurance under constant stop-start driving conditions across metropolitan distribution routes.

• Non-AFM engine block casting permanently eliminates active fuel management lifter failure modes.
• 58X crankshaft reluctor wheel provides high-resolution digital timing inputs to the engine control module.
• Cathedral port intake passages generate strong low-end pulling torque for moving heavy commercial freight.
• Hydraulic roller lifters operate with minimal noise and friction across long commercial operating shifts.
• Chevy 4.8L internal gerotor oil pump sustains 55 to 65 PSI oil pressure throughout the block.
• One-piece fluoroelastomer rear main seal locks motor oil inside the crankcase envelope.
• Hardened steel pushrods maintain precise valve lift timing under sustained heavy throttle loads.
• Multi-layer steel head gaskets resist thermal shearing between the iron block and aluminum heads.

Reluctor Tracked Dynamic Pressure Ratings

System oil pressure registers 22 PSI hot idle and 50 to 65 PSI under heavy highway load. Engine cooling temperature operates within 190°F and 205°F for optimal combustion efficiency. Output benchmarks verify 295 continuous horsepower at 5,600 RPM and 305 lb-ft torque at 4,600 RPM. Compression ratio measures 9.1:1 with dynamic cylinder pressure ranging between 175 and 185 PSI. Radiator heat rejection demands 4,150 BTU/min under Severe Commercial Fleet duty during continuous summer freight runs.

Metric Flange Crankshaft Alignment Dimensions

The one-piece rear main crankshaft flange incorporates a 6-bolt flexplate bolt pattern on a 3.00-inch circle. The front snout measures 1.259 inches with a broached keyway slot for the harmonic balance ring. Crankshaft endplay ranges from 0.003 to 0.007 inches when checked with a dial gauge. Pilot bore aligns flush with heavy automatic transmission torque converters.

Drive By Wire Priming Maintenance Protocols

Pressurize the internal main oil gallery with six quarts of 5W-30 motor oil using an oil priming tank before turning the ignition key. Bleed cooling circuit air to prevent localized hot spots around exhaust ports. Not engineered for continuous marine vessel operation, alcohol-fueled race conversions, or boost levels over 6 PSI.

• Check cockpit oil pressure gauges and fluid sight glasses each shift.
• Inspect engine cooling lines and serpentine belt wear every 5,000 miles.
• Drain crankcase engine oil and install fresh spin-on filter every 4,000 miles.

Gen IV Commercial Fleet Warranty Details

Covered by a 3-Year / 100,000-Mile commercial fleet warranty covering structural block defects and internal parts. The reinforced shipping container contains the remanufactured long block engine, high-flow oil pump, oil pickup tube, complete installation gasket kit, spark plug seals, pre-lube instructions, and hot-test dyno reports.