4L80E 1997-1998 Chevy/GMC C2500, C3500, P30, P3500 RWD – Remanufactured 4-Speed Automatic Trans

Description

Engineered for severe fleet applications, Chevrolet 4L80E 1997-1998 Remanufactured Transmission maintains high torque capacity and crisp shifts across demanding routes. This 4-Speed 2WD unit manages 460 HP and 440 lb-ft continuous input torque up to 5,200 engine RPM. Operating line pressure reaches 210 PSI to prevent internal clutch slippage under gross vehicle weight.

High-pressure die-cast A380 aluminum cases enclose carburized 8620 steel planetary gears, ground helical gearsets, and high-energy segmented graphite friction plates. Hard-anodized sleeves and oversized pressure regulator valves eliminate internal valve body leaks. Features include 1/2-inch inverted flare cooler ports, a 255 lb dry weight, a 13.5-quart fluid capacity, and a heavy-duty torque converter.

Key Features of Chevrolet 4L80E

Fleet mechanics choose to buy Chevrolet 4L80E 1997-1998 remanufactured transmission units to ensure continuous vehicle uptime across regional logistics networks. Commercial cutaway chassis and flatbeds require durable gear train components that withstand brutal torque loads.

• Hardened alloy forward clutch hubs strengthen the 1997-1998 4L80E gear train module
• Micro-finished valve channels restore hydraulic control in the 1997-1998 4L80E replacement valve body
• High-capacity 4-Speed direct clutch discs prevent slippage during full-throttle trailer hauling
• Upgraded electronic pulse-width solenoids maintain consistent shift timing under heavy cargo loads
• Reinforced direct drum bands improve holding force when descending mountain grades
• Precision-stamped separator plates prevent cross-leaks between high-pressure circuit channels
• Trued oil pump faces maintain continuous fluid volume to all rotating carrier bushings
• High-temp fluorocarbon sealing rings maintain hydraulic clamp pressure during long hauls

Hydrodynamic Flow Pressure Caps

Regulated mainline pressures measure 75 PSI at idle and climb to 210 PSI under maximum load. Operating fluid temperatures stay within 165°F to 195°F with adequate external cooling systems. Continuous input torque capacity reaches 440 lb-ft at 3,200 RPM. Ratios deliver 2.48:1 in 1st gear, 1.48:1 in 2nd gear, 1.00:1 in 3rd gear, and 0.75:1 in 4th gear overdrive.

Output Shaft Register Alignment

The unit features a 32-spline output shaft built for commercial 2WD slip yokes. The transmission case measures 31.5 inches from the bellhousing face to the rear tailhousing lip. Transmission crossmember mount holes sit 22.3 inches back from the engine mating face. Radial bushing runout remains held under 0.0017 inches on dial indicator tests.

Automated Solenoid Dyno Testing

Computerized benches test internal solenoids for electrical resistance and hydraulic sealing before final dynamometer validation. Each transmission runs on a chassis dyno under simulated load to confirm gear shifts and converter clutch lockup. This unit is not engineered for pro-mod drag vehicles, sled pullers, or contaminated coolers.

• Check fluid level on dipstick every 14 operating days
• Change fluid and internal suction filter every 25,000 miles
• Drain and flush total fluid capacity every 12 months

Commercial Warranty Pallet Contents

This transmission carries an industry-standard 3-Year unlimited mileage warranty protecting commercial operators. The wooden transport crate contains one complete remanufactured transmission, a tested lockup torque converter, an inline fluid filter kit, printed installation guidelines, and fluid specification documentation.