Chevy Impala Monte Carlo Venture Pontiac Grand Am Montana 3.4L V6 Remanufactured Engine 2000-2002

Description

Replace failing minivan and sedan powertrains with this precision-machined Chevrolet Impala 3.4L Remanufactured Engine long block. Engineered for front-wheel drive platforms, this 6-Cylinder 12-Valve OHV engine stops persistent lower intake manifold coolant erosion. A candid mechanical trade-off requires replacing the secondary air check valves before first startup to prevent exhaust moisture contamination inside the fresh cylinder head passages.

Cast iron engine block architecture features foundry casting numbers 4227, 7253, 089, or 934 on the driver side. Cast iron cylinder heads carry casting marks 245007487 or 170 featuring secondary air injection SMOG holes over 2 exhaust ports. Crated envelope dimensions measure 36in length by 36in width by 36in height with a net dry weight of 267 lbs. Rotating components feature crankshaft casting 981, roller lifters, roller rocker arms, and a 4.5-quart oil pan.

Key Features of Chevrolet 3.4L

Automotive repair facilities buy Chevrolet 3.4L remanufactured engine assemblies to restore dependable fleet operation and pass tailpipe emissions. This long block stops internal oil consumption while balancing rotating harmonics across all 6 cylinders.

• CNC deck resurfacing creates an Ra 25 finish to prevent lower intake gasket failures
• Diamond plateau honed cylinder bores seat piston rings within 500 miles to curb oil consumption
• Crankshaft casting 981 undergoes micro-polishing to hold 0.0003in TIR runout across journals
• Align-honed main bearing saddles maintain 0.0012in clearance to support oil film pressure
• Secondary air SMOG holes over exhaust ports maintain California and Federal emissions compliance
• Roller camshaft and roller rockers reduce friction to preserve factory valve lift duration
• Remanufactured 12-Valve cylinder heads feature valve seats cut to 0.001in concentricity for tight seal

Dyno Load Precision Machining Tolerances

Automated dyno spin testing verifies 180 HP output at 5,200 RPM and 205 ft-lbs torque at 4,000 RPM under heated test cycles. Machinists enforce crankshaft journal runout below 0.0003in TIR while rod bearing oil clearances hold an exact 0.0012in. Plateau-honed cylinder walls deliver uniform compression between 175 PSI and 180 PSI across all 6 combustion chambers. Hot engine oil pressure measures 50 PSI at 2,500 RPM while regulated coolant operating temperatures stabilize at 195°F to verify water jacket flow integrity before crate sealing.

Vehicle Fitment Drivetrain Guide

This remanufactured long block fits 2000 to 2002 Chevrolet Impala, Monte Carlo, Venture, Oldsmobile Alero, Silhouette, Pontiac Grand Am, Montana, and Aztek models equipped with the 3.4L 3350cc V6 engine and VIN code E. Pairs with front-wheel drive transaxles running 4-Speed Automatic transmissions. Fitment restriction: this engine features SMOG air holes over exhaust ports and does not fit 2004 or newer applications, motorhome chassis, or rear-wheel drive GM platforms.

Installation Protocol Service Schedules

Install updated aluminum-frame lower intake manifold gaskets and torque fasteners in 3 steps to eliminate coolant contamination. Clean all radiator passages and verify throttle body position sensor alignment before initial crank. Warning: never install this non-turbo long block into motorhomes or chassis applications exceeding factory vehicle gross weight ratings.

• Fill crankcase with 4.5 quarts of SAE 5W-30 break-in oil before running the starter
• Drain break-in motor oil and install a new spin-on filter after the initial 500 miles
• Perform recurring synthetic blend motor oil and filter changes every 3,000 miles or 5,000 miles

Warranty Terms Core Return Policy

Every remanufactured GM engine includes our 3-Year Unlimited-Mile parts warranty for complete owner assurance. Our freight team provides prepaid return tags for your rebuildable core block within an authorized 30-day window. Each crate delivers the long block, oil pan, front timing cover, valve covers, and printed installation documentation.