W Body
Showing 28–36 of 39 results
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LMMF 96-99 to 00+ Injector adapter pigtail
$75.0098–00+ Injector Adapter Pigtail
Easily convert your 1996–1999 GM 3100 or 3400 wiring harness to work with a 2000–2005 style injector harness using this 98–00+ Injector Adapter Pigtail.
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LMMF 98-05 3800 Series II simplified harness combo
$490.00Harness and ECM combo Fits 1998-2005 GM 3800
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LMMF 98-05 3800 Simplified wiring harness
$350.001998–2005 GM 3800 Simplified Standalone Wiring Harness
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LMMF 98-05 3800 Supercharged Tuned ECM
$150.00Custom Supercharged ECM Tune for 1998–2005 GM 3800 Series II
Built specifically for supercharged 3800 setups, this custom ECM tune is designed to maximize performance, responsiveness, and reliability—whether you're chasing horsepower or building a derby-ready monster.
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LMMF 98-05 3800 Tuned ECM
$140.00 This Custom ECM Derby Tune for 1998–2005 GM 3800 engines is built specifically for demolition derby and off-road applications where factory limitations just get in the way.ADD TO CART -
LMMF 98-99 3100/3400 Simplfiied wiring harness
$315.00 Our LMMF Simplified Standalone Harness is built to make getting your engine running quick, clean, and reliable. Designed with all new wiring and connectors, this harness eliminates unnecessary factory wiring and provides a simple solution for swaps, derby cars, race builds, and off-road applications.ADD TO CART -
LMMF 98+ 3100/3400 Tuned ECM
$140.00 This Custom ECM Derby Tune for 1998–2005 GM 3100 / 3400 engines is built specifically for demolition derby and off-road applications where factory limitations just get in the way.ADD TO CART -
LMMF Adjustable Wbody Throttle Bracket
$55.00 LMMF Adjustable Throttle Bracket – GM 3100 / 3400 / 3500 (6-Bolt & 12-Bolt Options) Fix throttle cable alignment the right way with the LMMF Adjustable Throttle Bracket, built specifically for GM 3100, 3400, and 3500 LX9 engines. Designed for engine swaps, demolition derby builds, and custom setups, this bracket eliminates the common throttle geometry problems that come from factory parts or homemade solutions.Select options -
LMMF Quick Disconnect switch box
$240.00 The LMMF Quick Disconnect Switch Box gives you a clean, simple way to control your car while making it incredibly easy to remove or swap components between builds.ADD TO CART