Performance Series 5.9 CR Block

At D&J Precision Machine, we understand the value of providing our customers with the option to rebuild their own engines. With that in mind, we present a budget-friendly, performance focused alternative to our full in-house engine builds: the Performance Series Block.

Key Features:

• Expert Machining: Leveraging our years of machining experience and expertise.
• Rigorous Inspection: All blocks are rigorously inspected and graded in our core department for any defects or cracks.
• High-Temperature Processing: Blocks are processed in a high-temperature oven to remove all oil and gasket residue.
• Steel Shot Blasting: Blocks are steel shot blasted and cleaned to meet our strict inspection standards.
• Precision Boring and Resurfacing: Blocks are expertly bored and the deck resurfaced on our Hurco machine, typically to +.020 over stock. It is uncommon to find a standard bore 5.9 or 6.7-liter block that meets our exacting standards.
• CNC Honing: Blocks are CNC honed to Cummins spec with a torque plate.
• Billet Girdle and Main Studs: Each block gets our billet girdle with 9/16 main studs, line bored, and line honed.
• Cam Tunnel and Bushings: The cam tunnel is line honed, and cam bushings are installed throughout.
• State-of-the-Art Cleaning: Final wash and clean using our custom parts washer with high-pressure water nozzles and cleaning agents.

Quality Assurance:

• Strict Standards: We only ship blocks that meet our exacting standards and that we feel comfortable selling to our customers.

Upgrade to our Performance Series Block for a high-quality, reliable foundation for your engine rebuild project.