Killshot Fusion
Traditional Engine EFI
4-barrel throttle-body EFI for classic V8 applications.
View Killshot Fusion →
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ACES EFI Systems
Now at LMC Truck
Old Truck.
New Tricks.
Modern EFI, fuel delivery and ignition for the classic truck you already love. Start with the system that fits your engine, then build the fuel and ignition setup around it.
Find Your System →
Choose Your Truck
Choose your truck once and we'll show only the Aces EFI products LMC Truck offers for that vehicle.
Select your truck once. We'll tailor the Aces EFI products on this page to your vehicle.
Start Here
Build Your EFI System
Choose your truck above and we'll narrow this lineup to the Aces EFI products LMC Truck offers for your vehicle. Not sure what you need? Start with your engine, then build the fuel and ignition system around it.
Shopping For
EFI Systems
Start with the engine in your truck.
Jackpot 2 LS
LS Engine Management
Standalone EFI and ignition management for many Gen III and Gen IV LS engines.
View Jackpot 2 →Fuel Delivery
Choose the setup that fits your tank and installation.
255 LPH In-Line
External Fuel Pump System
An EFI fuel-delivery option built around an externally mounted in-line pump.
View In-Line Kit →
255 LPH Tight-Fit
In-Tank Fuel Pump
A compact in-tank option for installations where clearance matters.
View Tight-Fit Kit →
340 LPH Tank Conversion
In-Tank / Internal Regulator
A higher-flow tank-conversion option with an internal regulator.
View Tank Conversion →Ignition & Installation
Supporting pieces for a complete conversion.
Gambler Ignition
Hall-Effect Distributor & Coil
Compatible ignition hardware for customers adding electronic timing control.
View Gambler Ignition →
Throttle Cable Brackets
Installation Hardware
Throttle cable bracket options for supported Aces EFI installations.
View Brackets →
SBC Dual-Plane Intake
Small-Block Chevrolet
A dual-plane intake option for applicable small-block Chevrolet combinations.
View SBC Intake →
From the LMC Garage
See How We Did It
We installed Aces Killshot Fusion EFI on two very different classic C10s—a 1967 with a 327 and four-speed, and a 1985 with a 305 and 700R4. See what worked, what we learned and what we got wrong along the way.
Read the Install Story →Not Sure What You Need?
Start With Your Engine
EFI gets much easier to understand when you start with the engine that's in the truck. From there, fuel delivery and ignition become supporting pieces of the system.
1
Traditional V8?
If you're replacing a carburetor on a traditional V8, Killshot Fusion is the place to start. Its 4-barrel throttle-body design fits the familiar 4150-style layout while adding modern electronic fuel control.
Learn About Killshot →2
LS Engine?
Running a GM Gen III or Gen IV LS engine? Jackpot 2 provides standalone control for many LS applications and is the natural starting point for an LS-swapped classic truck.
Learn About Jackpot 2 →3
Converting From a Carburetor?
Your existing mechanical or low-pressure electric fuel setup may not be enough. EFI requires the correct pressure and fuel supply, which is why fuel delivery is part of the conversion—not an afterthought.
Learn About Fuel Delivery →4
Want EFI-Controlled Timing?
Fuel control is only part of the equation. A compatible ignition system can let the EFI system work with more precise timing information and control.
Learn About Ignition →Traditional Engine EFI
Killshot Fusion
Modern EFI Without Giving Up Your Engine
Killshot Fusion is a 4-barrel throttle-body EFI system designed for customers who want modern fuel control without changing the character of the engine already in their truck. It combines the throttle body and ECU in a compact package and uses self-learning fuel control to simplify tuning.
- 4150-style throttle-body format
- Self-learning fuel control
- Supports naturally aspirated applications up to 650 horsepower
- Designed to improve starts, drivability and fuel control versus a traditional carburetor
LS Engine Management
Jackpot 2 LS
Built for the LS Swap
Jackpot 2 is a standalone engine-management system for many 1997–2014 GM Gen III and Gen IV LS engines. It supports common 24x/1x and 58x/4x trigger patterns and gives an LS-swapped truck the fuel and spark control it needs without relying on the original vehicle electronics.
- Standalone LS engine management
- Supports common Gen III and Gen IV trigger patterns
- Sequential fuel and spark control
- Self-learning features designed to simplify setup and tuning
Fuel Delivery
Give EFI the Fuel It Needs
In-Line and In-Tank Options
An EFI conversion needs more than a throttle body. The fuel system has to provide consistent pressure and flow, which is often very different from the system that supported the original carburetor. Aces offers multiple ways to build that supply around the truck and tank you already have.
- Complete 255 LPH in-line fuel system options
- Tight-fit 255 LPH in-tank pump for limited-clearance installations
- 340 LPH tank-conversion pump with internal regulator option
- Lets you choose a solution based on tank configuration and installation needs
Ignition
Gambler Series
A Modern Signal for a Classic V8
The Gambler Series uses Hall-effect triggering to provide a clean, precise engine-position signal for compatible EFI and ignition setups. It is a natural option for customers who want their EFI conversion to extend beyond fuel control and into ignition timing.
- Hall-effect 7+1 trigger design
- Distributor and coil combination
- Applications available for popular Chevy, Ford and Mopar V8 engines
- Supports a more integrated EFI and ignition strategy
Think of EFI as a System
The Throttle Body Is Only Part of the Story
A successful EFI conversion depends on the engine, fuel supply and ignition working together. These are the two areas customers most often need to think about beyond the EFI unit itself.
Fuel Pressure & Delivery
Carbureted trucks typically operate at much lower fuel pressure than EFI systems. Converting to EFI may require a different pump, filtration, plumbing and regulator setup so the EFI system receives steady fuel pressure under all driving conditions.
Ignition & Timing
EFI can manage fuel without controlling ignition, but compatible ignition components can give the system better engine-position information and allow fuel and timing to work together as a more complete engine-management package.
EFI Questions?
Start Here.
You don't have to be an EFI expert to choose the right direction for your truck.
What is EFI?
Electronic fuel injection uses electronic sensors and an ECU to determine how much fuel the engine needs. Compared with a traditional carburetor, EFI can automatically make fuel adjustments as operating conditions change.
Why would I replace my carburetor with EFI?
Common reasons include easier starting, more consistent drivability, automatic fuel compensation and less need for manual carburetor tuning. EFI does not change what makes a classic engine a classic—it changes how fuel is managed.
What's the difference between Killshot Fusion and Jackpot 2?
Killshot Fusion is a throttle-body EFI system intended for traditional engines that would normally use a 4-barrel carburetor. Jackpot 2 is a standalone engine-management system for many GM Gen III and Gen IV LS engines.
Do I need a different fuel pump for EFI?
Often, yes. EFI systems generally require more fuel pressure than a carbureted fuel system. The correct pump and plumbing depend on the EFI system, fuel tank and installation layout.
Do I need an in-line pump or an in-tank pump?
Either approach can work when properly matched to the application. An in-line system can be useful when working with an existing tank, while an in-tank solution can provide a cleaner installation for trucks where the tank and available space support it.
Do I need the Gambler distributor to run Killshot Fusion?
Not every installation requires an EFI-controlled distributor. The Gambler Series becomes especially relevant when you want compatible electronic timing control as part of the overall EFI system.
Can I keep my existing engine and still add modern EFI?
Yes. That's one of the main reasons throttle-body EFI systems like Killshot Fusion are appealing for classic trucks: you can retain a traditional engine while modernizing how fuel is delivered and controlled.