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3.8 OHV engine VIN 4

1999-2000 Ford Mustang, Thunderbird, Mercury Cougar





2230 Macintosh Drive

Horn Lake, MS 38637

All PowerSource engines undergo full OEM remanufacturing and testing procedures including:

  • Engine blocks are magnafluxed, cylinders bored and precision honed to a tolerance of .0001"

  • Cam journals align bored and bearings installed to correct oiling issues on all Ford 4.6L and 5.4L engines

  • Engine blocks and cylinder heads precision surfaced to ensure proper sealing

  • Cylinder heads magnafluxed or dye checked and machined for three angle valve seats

  • Crankshafts are stress relieved, precision ground, and micro polished for optimum durability and surface finish

  • Camshafts precision ground or replaced with new to maintain the OE profile

  • Each engine is SIM tested for compression, oil pressure, oil leaks, unusual engine noise, and general operation condition before shipment

  • Engines ship with a finishing gasket set (oil pan, valve cover, intake etc.)

  • Return shipping on core included (for customers in the contiguous US only)

  • ISO 14000 & ISO 9001 Quality Control 

  • The block is guaranteed to be a 1st time repair (.020 or .030 overbore)

  • All new .003" over valves to insure proper guide clearance

  • Graphite coated hypereutectic pistons

  • Hardened valve seats for flex fuel compatibility

  • No weld repairs

  • Cylindricity of less than 10 microns 


Special order engines or transmissions are subject to a 5% cancellation fee. New returns are subject to a 10% restocking fee and 2 way freight charges. Engines that have been installed and/or used are not returnable. Warranty coverage is not available for any unit with an outstanding balance.

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