Chevrolet 19257648 6.0L 364ci Remanufactured Long Block

Exhaust manifold bolt head shearing and lifter bore scoring disable high-mileage commercial chassis cabs. The Chevrolet 19257648 6.0L 364ci Remanufactured Long Block cures exhaust leakage and valvetrain noise throughout this commercial long block repower. This 8-Cylinder 325HP workhorse requires reluctor wheel sensor alignment inspection before mating the bellhousing to the transmission case.

Monolithic ASTM A48 Class 35 gray cast iron forms the deep-skirt crankcase with cross-bolted main caps. A precision-ground nodular iron crankshaft spins in tri-metal copper-lead bearings, feeding hypereutectic pistons under A356-T6 cathedral-port cylinder heads. This Chevrolet engine core pulls a 12V 170A starter draw during cold winter starts. Total dry weight is 440 lbs, fitting a 28in length, 26in width, 27in height stance with 6.0 quarts oil capacity.

Key Features of Chevrolet 19257648

Municipal repair superintendents buy Chevrolet 19257648 Remanufactured Long Block inventory to eliminate chronic truck downtime. Every industrial engine rebuild includes precision-extracted manifold bolt holes and diamond-machined deck planes.

- Cylinder bores machine to 4.000in with diamond plateau hone surface finishes.
- Main bearing journal clearance holds at 0.0014in across the five main journals.
- Hydraulic roller lifters eliminate camshaft lobe wear under continuous route hauling.
- Cathedral-port cylinder head runners enhance low-speed intake air velocity.
- Multi layer steel head gaskets stop combustion blowby into the coolant passages.
- This 19257648 commercial core receives electronic computer spin balancing within two grams.
- Induction-hardened valve seat inserts resist unleaded gasoline recession wear.

Brake Dyno Performance Records

Automated brake cell test logs demonstrate that this 19257648 long block engine produces 325 continuous BHP and 370 ft-lbs of torque at 4000 continuous load RPM. Internal oil gallery pressure measures 54 PSI while oil sump temp levels at 192°F under sustained brake loading. Exhaust gas temp tops at 1290°F down the test header tubes. Cylinder compression checks between 175 PSI and 184 PSI across all eight cylinders. Crankshaft center journal runout measures 0.0003in TIR.

Field Installation Diagnostic Protocol

Transmission kickdown linkage mechanisms require 5 lbs of pull force to maintain proper downshift control under vehicle acceleration. This remanufactured motor is not designed for methanol competition racers, outboard marine craft, or stationary pump skids.

- Evacuate initial break-in petroleum motor oil after 500 miles or 30 run hours.
- Check non-adjustable roller rocker arm bolt torque at 22 ft-lbs on base circle.
- Torque cylinder head bolts in three stages to final angle specifications.

Factory Warranty Delivery Manifest

Each unit certified under the Chevrolet assembly standard includes a 3-Year 100,000-mile commercial parts warranty. The heavy wood shipping container carries the complete long block core, steel oil pan, front timing cover, valve covers, oil pickup tube, and signed dyno load sheet.