• Cylinder heads are 100% inspected for cracks.

• JASPER-designed pistons offer profiled ring lands for scuff resistance under load; increased strength to withstand higher combustion pressures; increased oil drain back to prevent the rings from sticking, and improved stability to reduce blow-by.

Cylinder bores are honed with a steel torque plate that is torqued with ARP2000® bolts to simulate cylinder bore distortion, which occurs after head assembly, ensuring correct bore roundness for improved ring sealing.

100% use of graphite-coated pistons prevent scuffing and wear; using tighter piston-to-bore clearance, JASPER prevents “cold piston slap” and oil consumption.

100% installation of an oil pressure relief valve baffle on all 2007 and later applications to redirect oil to the pan.

100% installation of nitrided valves to improve durability and reduce friction.

Latest-design Active Fuel Management (AFM) lifters are installed to increase oil flow during start-up and to reduce lifter noise (2005 - present).

Hydraulically installed cam bearings provide precise alignment, eliminating distortion of the bearings for improved oil flow and pressure.

100% Live-Run Testing, for your assurance of reliability, includes compression, vacuum, and oil pressure testing.

VVT cam phaser testing and/or AFM solenoid testing where applicable.

Black Light testing for leaks.

DOD/AFM Delete: JASPER offers this option for the GEN IV 5.3, 6.0, and 6.2 Engines.

DOD/AFM Delete will have a Non-DOD/AFM Cam, 16 standard lifters, and the LOMA plate is replaced with an early-style valley plate.

JASPER offers a programmer to delete out the ECM command for the DOD/AFM along with pre-tuned performance upgrades.

NOW 50 STATE LEGAL CARB E.O.# D-391-1

• JASPER-designed pistons offer profiled ring lands for scuff resistance under load, increased strength to withstand higher combustion pressures, and improved stability to reduce blow-by.

• 100% use of graphite-coated pistons to help prevent scuffing and wear.

• JASPER-designed pistons provide 5 X more oil drain back for better oil control

• Larger 4.00 mm oil control ring assembly provides improved oil scraping when compared to OEM’s 3.00 mm.

• Anodized crown and top land promotes better top ring seal and drastically reduces any top ring micro-welding.

• Cylinder bores are honed with steel torque plates that are torqued with hardened bolts to simulate cylinder bore distortion, which occurs after head assembly, ensuring correct bore cylindricity.

• 100% installation of a proprietary antifriction, wear-resistant polymer coating on all bearings to reduce wear on dry start-up and increase longevity.

• Dual displacement oil pump is electronically and mechanically tested during the live-run test to verify operation and correct oil pressure.

• Hydraulically installed cam bearings provide precise alignment, eliminating distortion of the bearings for improved oil flow and pressure.

• JASPER installs a thicker, polytetrafluoroethylene (PTFE) coated Multi-layer Steel (MLS) head gasket to maintain OEM compression ratio.

• Block and heads are resurfaced to a 50–150 Rz finish.

• 100% installation of NEW Torque-to-Yield head bolts.

• Latest-design Active Fuel Management (AFM) lifters are installed to increase oil flow during start-up and reduce lifter noise (2005 –  present).

• Oil pump, oil pan, timing cover, and rear cover are installed.
• 100% live-run tested to verify proper compression, vacuum, and oil pressure.
• VVT actuator and/or AFM solenoid function is tested where applicable.
• 100% black light leak tested to ensure the unit is leak-free.

• JASPER installs a fuel pump drive roller for proper high-pressure pump operation.
• JASPER includes a finishing gasket set for ease of installation.