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Marine Engine - TCM 825 EFI

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Quick Overview

Our flagship engine! TCM's Supercharged, EFI, 800 horsepower, 509 cubic inches engine will take you anywhere you want to go! Our TCM/Whipple EFI blower package combined with Brodix aluminum heads is powerful and dependable. Equipped with an exclusive proprietary MEFI4 program. This engine represents our latest technology and is built to last and make some serious power on 91 octane!

"Contact Teague Custom Marine for specific engine pricing and shipping options, call 661-295-7000 direct."

The veteran of the Teague Custom Marine engine line, the 825 EFI traces its lineage decades back to the TCM 800 Carb.  With proven 500 plus hour run time durability and a staggering 900 lb/ft of torque output, the 825 EFI is a true workhorse!  Based upon a standard deck World Merlin 3 Billet Splayed Mains block, with a Callies Dragonslayer crankshaft, Manley H-Beam connecting rods, Brodix BB2Xtra proprietary CNC Aluminum Cylinder Heads, and TCM Platinum stud roller rockers, the 509 cubic inch TCM 825 EFI is configured for maximum value per horsepower, without sacrificing performance or durability.  New additions include a fully integrated Aeromotive fuel system on the engine, which supplies the 3.3L Whipple Twin Screw Supercharger.  This engine comes standard with top shelf CMI Stainless Steel Water Jacketed Headers and a Cupronickel Whipple intercooler, which are fed by the finest full SS twin stage water pump from Latham Marine.  The TCM 825 EFI is finished with fully color matched billet aluminum accessories and custom plumbing, with combined with custom supercharger and valve cover powder paint options for a truly custom engine installation.

TCM 800EFI 825EFI Engine Package
1 year limited warranty

TCM also recommends: Mercury HD or IMCO Transom Assembly, Dual Ram Full Hydraulic Steering, Teague Platinum XR Drive or SSM VI, Aeromotive Fuel System, TCM Water Plumbing and Sea Strainer System, Offshore Oil Cooler, Mufflers, Propeller upgrade.

"Contact Teague Custom Marine for specific engine pricing and shipping options, call 661-295-7000 direct."

Horsepower: 825 HP EFI
Displacement: 509 Cubic Inches
Recommended Max W.O.T. RPM Range: 5,600 - 5,900
Block: V-8, Merlin III 4 Bolt Billet Splayed Mains, 9.800 Deck Ht.
Crankshaft: 4340 HP Forged Steel
Connecting Rods: Manley or Carrillo (on request)
Pistons: Custom C.P. Forged Aluminum
Rings/Bearings: Speed Pro/Hastings/M-77 H Series
Cylinder Heads: Brodix Aluminum Proprietary CNC Ported Heads, Bronze Guides, ARP Pro Series Studs, and AFR Guide Plates.
Valves: Severe Duty SS and Inconel Valves (extreme duty)
Induction System: W200AX Whipple Supercharger w/Cupronickel Intercooler, Electronic Fuel Injection
Sea Pump: Latham SS Dual Stage pump.
Valve Covers: Teague Polished or Coated Aluminum w/Breathers
Ignition: Complete MSD 6M2 Marine Ignition with Soft Touch Rev Control
Camshaft/Valvetrain: Custom Crane Hydraulic Roller Cam and Lifters, Manley Pushrods, Isky “Tool Room” Valve Springs, and Teague 1.7 Roller Rocker Arms.
Exhaust:CMI Full Polished E-Tops w/Cool Collar (Tailpipes Not Included) Sport tubes and Big tubes are also available.

Necessary Rigging Kits: Offshore Oil Cooler, Intercooler Plumbing, TCM Sea Strainer, TCM Offshore Pick-up, TCM Dual Dump and TCM/Aeromotive HP Fuel System. TCM will design you a complete custom plumbing kit for your engine.

Marine Engine - TCM 825 EFI

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TCM 800EFI 825EFI Engine Package
1 year limited warranty

Additional Information
Model TCM 825EFI

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