"Big Dog" 7 Port .23 Engine [Monster Truck]

Stop Driving a Chihuahua.

Let’s be honest: most stock engines are like well-behaved house pets. They’re nice, they’re quiet, and they do what they're told. The Classic RC "Big Dog" .23 is not housebroken. It’s loud, it’s aggressive, and it wants to tear up the backyard.

Designed specifically for heavy 1/8 scale Monster Trucks, this engine bumps the displacement up to a .23 size and utilizes a 7-Port Sleeve to deliver a powerband that is absolutely ferocious. It provides the grunt needed to launch heavy metal off the line and turns your local track into its personal chew toy. If you want an engine that bites as hard as it barks, you need the Big Dog.

Why You'll Love It:

• 7-Port Powerhouse: The advanced 7-port sleeve design optimizes airflow for a perfect balance of low-end grunt and high-RPM screaming. It pulls hard from idle and never stops pulling.
• Displacement Advantage: At .23 cubic inches, this engine offers a "sweet spot" of power—more torque than a standard .21, but with higher revs and better fuel economy than a massive .28 or .30.
• Monster Truck Tuned: We didn't just repurpose a buggy engine. The timing and porting on the Big Dog are specifically tuned to move heavy metal. It loves big tires and heavy chassis.
• Jimmy Rigged Reliability: Built to the high standards of the Classic RC team, this engine holds a tune and idles reliably, so you spend more time driving and less time with your glow igniter.

What's Under the Hood:

• Displacement: .23 ci (3.75cc)
• Ports: 7-Port Hard Chromed Sleeve
• Carburetor: Slide Valve with 7.5mm Venturi included
• Crankshaft: SG Style
• Glow Plug Type: Turbo (Plug not included)
• Rear Exhaust: Standard fitment for most 1/8 truck big block exhausts

What's In The Box:

• "Big Dog" 7-Port .23 Engine
• Venturi Restrictor (7.5mm)
• Head Shim (Pre-installed)
• Custom storage case

Note: Requires Turbo Glow Plug, Fuel, Exhaust System, and Starter Box (sold separately).

A full line of maintenance and replacement parts are available here

USA based customer service and support is provided by Classic RC Company

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