EFI 24x™ LT1/LT4. Since 2008, our 24x LT1 conversions have been eliminating the optispark distributor and transforming LT1 engines. EFI Connection's 24x LT1 systems are designed to …

Modernize Your Early SBC, VI Gen BBC, TPI, LT1 / LT4 Engine. Our EFI 24x™and EFI 58x™ Product Lines bring Gen III LS1 PCM control and Gen IV LS3 ECM control to these popular …

Take control of your GM Gen V LT4, LT1, L83, or L86 engine with Terminator X! Do not settle for a factory ECU with a cumbersome tuning interface when you can have complete control of …

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The Holley EFI Terminator X Max GM Gen V LT4 Direct Injection Kit with 6L80E/6L90E Transmission Control provides Advanced Engine Control System. This system is designed for …

Howell EFI Adds to Lineup of Gen 4 LS and LSA Swap Harnesses (2008-2014) Engines

Test boost against time, gear, RPM, and speed in your late Gen V LT4 engine via the Holley Terminator X Max EFI kit (550-1624). This kit is the perfect way to enjoy GM 4L60 and 4L80 …

100's of LT1/LT4 Engines are running with the Torqhead Gen 3 PCM and Ignition Conversion. Get your conversion today! TorqHead LTD products are for off-road use only.

The Edelbrock Performer RPM Air-Gap LT1/LT4 intake manifolds feature a tunnel-ram design that offers performance increases in the 1500-6500 rpm range. The air-gap design separates the …

Whether you are updating your LT1/LT4 electronic fuel injection system to use a newer ECU or update the ignition system on your carbureted LT1 engine, an EFI 58x LT1/LT4 conversion will …