McLaren Engine : Cannonball CSO T-Spec

CSO T-Spec McLaren Engine Build – for Performance

At Cannonball Garage, we are the premier McLaren specialists, setting the standard for high-performance McLaren engine solutions with our CSO (Cannonball Special Operations) engine program. Designed to address the biggest weakness in McLaren’s M838T & M840T engines—fragile factory connecting rods—our CSO T-Spec McLaren Engine Build is the ultimate solution for owners looking to enhance performance, reliability, and longevity without compromising drivability.

– The “T-Spec” name was inspired by our collaboration with YouTuber Tavarish, whose McLaren 675LT engine we rebuilt to this spec after catastrophic failure. That same car went on to be featured on Jay Leno’s Garage, where Jay himself took it for a spirited drive and gave it his seal of approval.

Built for low-mileage, serviceable engines, the CSO T-Spec build retains factory pistons while reinforcing the engine’s internals with CSO-spec proprietary connecting rods, built to withstand extreme power demands. This proven setup is fully compatible with all bolt-on upgrades, making it the ideal foundation for increased horsepower and torque. With this configuration, many of our customers have achieved low 9-second quarter-mile times, proving its capability on the track.

Whether you’re looking to eliminate factory weak points, increase durability, or maximize performance potential, the CSO T-Spec Engine Build is engineered to deliver.

CSO T-Spec McLaren Engine Build – for Precision

Every CSO T-Spec McLaren Engine Build is fully assembled and sealed, including all timing components precisely installed. It arrives installation-ready, complete with valve covers and engine covers attached for a seamless drop-in process. Our expert team ensures that every component is carefully selected, machined, and optimized for uncompromising reliability and performance.

Key Features & Build Process:

 Complete Engine Disassembly & Inspection – Each component is meticulously cleaned, measured, and tested to ensure it meets our exacting performance standards.
 Block, Heads & Crankshaft Cleaned & Inspected – Restored to optimal condition for superior durability.
 Pistons Soda Blasted & Rings Gapped for Performance – Optimized for improved combustion efficiency and power delivery.
 CSO-Spec Proprietary Rods Pin-Fit to OE Specs – Designed to handle high-stress loads and eliminate factory weaknesses.
 CSO (King/ACL) Rod Bearings Installed – Engineered for high-load, high-RPM applications, reducing wear and increasing longevity.
 OE Main Bolts & Head Bolts – Providing factory-grade structural integrity and a reliable seal under extreme conditions.
 CSO Spec Head Gasket – Designed for superior sealing, maintaining compression and preventing leaks even under high boost applications.
 Valvetrain Reshimmed for Precision – Optimized for peak RPM performance, ensuring smooth and efficient valve operation.
 OE Front & Rear Main Seals & Water Pump Gaskets – Ensuring a leak-free build with long-term reliability.
 Updated Cam Phaser Bolts – Preventing failure points in high-performance applications.
 Precise Cam Timing Setup – Tuned for maximum power output, efficiency, and longevity.
 Fully Assembled & Ready to Install – Built by McLaren specialists, this engine arrives ready for seamless integration into your vehicle.

Why Choose a CSO T-Spec McLaren Engine Build from Cannonball Garage?

At Cannonball Garage, we don’t just build engines—we create high-performance solutions engineered to dominate both the street and track. Our CSO-built McLaren engines are battle-tested under extreme conditions, delivering unmatched reliability, durability, and power.

With years of McLaren-specific expertise, precision craftsmanship, and real-world performance data backing every engine we build, you can be confident that your CSO T-Spec McLaren Engine Build is designed to exceed expectations.

Upgrade your McLaren’s heart with CSO-engineered precision. Contact us today to discuss your CSO T-Spec McLaren Engine Build and unleash your vehicle’s full potential!

Applications

• McLaren MP412c
• McLaren 540C
• McLaren 570S
• McLaren 570GT
• McLaren 600LT
• McLaren 620R
• McLaren 650S
• McLaren 675LT
• McLaren 720S
• McLaren 765LT
• McLaren GT

Read our Terms & Conditions which includes our CSO Limited Engine Warranty HERE

View our “Engine Care Guide” HERE.