Howell EFI Introduces TBI Conversion Kits for Classic International Harvester Scout Trucks - Engine Builder Magazine
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Howell EFI Introduces TBI Conversion Kits for Classic International Harvester Scout Trucks


The Scout is going through a renaissance of popularity, especially at auctions nationwide. Howell EFI offers eight different Throttle Body Injection (TBI) kits that can be used to convert classic International Harvester Scout trucks to TBI. Whether driven off-road, used for show or a daily driver, Howell’s TBI conversion kits are designed to convert classic Scouts (Scout 80, Scout 800, 810, Scout II) quickly and efficiently to fuel injection improving cold starting, drivability and fuel mileage. And for off-roaders, your Scout will be less likely to be fuel starved when taking the trail at an angle. 

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The kits include everything needed to convert these classic styled Scouts from the original Scout 80 (1960-’65) to the 810 (1971) to TBI in one easy kit and can work with or without modified engine or headers and with options for 2BBL or 4BBL intakes. Howell TBI kits feature a remanufactured GM throttle body appropriate for the engine size, all sensors – MAP, coolant and oxygen, components, a stand-alone wiring harness available in variable lengths based on where the TBI will be located, ECM and fuel pump, clamps and one of three sized adapter plates. The Howell TBI kit allows for custom calibration PROM for the engine and an ECM that installs under the dash. No tuning will be required. The fuel pump installs into the main fuel line, and bypass fuel is returned to the tank. The weather resistant harness includes a diagnostic connector, and the diagnostic is like a 1986-92 GM pickup. The kit utilizes the OBDI GM diagnostic capabilities for scanning codes. 

Current available kits include IH461 CID, IH478 CID, IH304 CID, IH345 CID, IH392 CID, IH401 CID, IH446 CID and IH266 CID. Options exist for the kits to make sure that installation is true plug and play and a knowledgeable staff is available to assist with specific questions on installation. 


For more information about Howell TBI conversion kits, visit All kits are guaranteed with a money-back guarantee and come with full installation instructions and troubleshooting guide. T

Engine Builder Magazine