Mazworx Pro Drag Billet TB48X Block

The Mazworx Pro Drag Billet TB48X Block is engineered to overcome the limitations of the stock iron Nissan TB48 engine block, which typically withstands up to 2000 horsepower before succumbing to vertical splits along the head studs and loose main caps. Crafted entirely in-house at Mazworx, this billet block addresses these durability issues with precision design and premium materials.

Key Features

• Constructed from high-quality 6061-T6 aluminum for excellent strength-to-weight ratio.
• Maintains the stock deck height for compatibility and ease of installation.
• Compatible with 9/16″-1/2″ L19 head studs and main studs to ensure robust fastening.
• Main caps secured with 1/2″ studs; mains 2 through 6 incorporate 3/8″ side bolts providing a 4-bolt design for enhanced stability.
• Designed tunnel clearance accommodates up to a 115mm stroke using aluminum rods.
• Improved structural connection between the head studs and main studs enhances overall block integrity.
• Absence of water jackets keeps cylinders rounder, contributing to consistent performance.
• Features a -12an ORB main oil inlet for efficient oil flow management.
• Main caps are made from durable 7075-T6 aluminum and can be individually removed, simplifying maintenance at the track.
• Includes pre-installed Darton sleeves that are bored, honed, and receivered for optimal engine performance.
• Right and left mounting holes replicate OEM block specifications to facilitate straightforward installation.

This block is delivered ready to assemble with main caps and a main stud kit included. The head stud kit is offered as an optional add-on. The complete block weighs approximately 120 lbs, providing a strong yet lightweight foundation for your high-horsepower racing engine build.