• 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 

* We waive the core deposit for 30 days. Simply call us for a prepaid shipping bill to return the core

 * PowerSource engines for most one ton and under applications carry a 3-year/100,000-mile parts and labor warranty. The standard warranty covers parts and reimburses labor at $50/HR.
We also offer a No-Fault warranty that guarantees a replacement engine and labor even if the failure is not due to a defect. This means that regardless of cause of failure, you're guaranteed a one-time replacement and labor, under the terms of the original warranty. It reimburses up to $100 per hour, has up to $50 fluids coverage, up to $100 towing coverage, and $350 rental coverage.
​Please call or email us at powersource@comcast.net for full written warranty.

All warranties, express or implied, are the exclusive responsibility of the original manufacturer.