For American classic and modern hot-rodders, upgrading a small block Chevy with EFI components can unlock improved throttle response, efficiency, and horsepower. This guide highlights five relevant kits and parts that support multi-port and single-plane EFI setups, fuel delivery systems, and injector service. Each item is chosen for compatibility with Chevy small-block engines and its potential to enhance performance across a broad RPM range.
| Product | Brand | Type | Key Feature |
|---|---|---|---|
| JGhyperX 7137 Intake Manifold | JGhyperX | Multi-Port EFI Intake Manifold | Large plenum with long tapered runners for broad torque |
| 300-260 Intake Manifold | JGhyperX | Single Plane EFI Manifold | Port-matched runners with relocated EGR passages |
| Dasbecan GSL392 Fuel Pump & Regulator Kit | Dasbecan | Inline Fuel Pump & Regulator Kit | High-pressure 255 LPH pump with 58 PSI regulator |
| Htostar Racing Fuel Injection Line Kit | Htostar Racing | Fuel Line Fitting Adapter Kit | Comprehensive hose and fitting assortment for 58 PSI systems |
| AUTO OCCASION Fuel Injector Seal Kit | AUTO OCCASION | Injector Repair Seal Kit | Micro filters and O-rings for Chevy injectors |
Note: All items listed are compatible with common small-block Chevrolet platforms and EFI configurations. Choose based on your engine setup, whether upgrading an EFI-capable intake, fuel delivery, or injector service components.
JGhyperX 7137 Intake Manifold
The JGhyperX 7137 intake manifold is designed for Chevy Small Block SBC engines from 1957 to 1986, including 262, 265, 283, 302, 305, 307, 327, 350, and 400 V8s. It features a large plenum and long tapered runners to maximize horsepower across a broad rpm band (1,500–6,500 rpm). The design supports multi-port EFI, with a 90 mm throttle body bore and a compact end-seal height of 9.09 inches at the front and 8.20 inches at the rear. This manifold helps improve air distribution for efficient intake charge and power delivery.
300-260 Intake Manifold
The 300-260 intake manifold is a single-plane EFI manifold compatible with Chevy Small Block SBC engines from 1957–86 and related V8s. It is designed for multi-port fuel injection and features relocated EGR passages outside the manifold to allow larger intake ports, increasing air capacity—beneficial for boosted or high- RPM applications. It’s built with an EFI-ready air path, intended for use with fuel rails, and supports a 2,500–7,500 rpm operating window. This model suits performance-oriented builds seeking strong mid-to-high RPM power.
Dasbecan GSL392 Fuel Pump & Regulator Kit
This kit replaces GSL392-400-939 inline pump and 61633737 regulator, including fittings and mounting hardware for LS-based EFI setups. The pump delivers 255 LPH at 58 PSI and draws about 20 amps, making it suitable for most LS-based engines and fuel-injected small-block swaps. It’s designed to support EFI applications with turbo or supercharged systems, ensuring stable pressure for reliable injectors and EFI sensors across the operating range.
Htostar Racing EFI Line Kit
The Htostar Racing kit includes a 58 PSI LS fuel filter/regulator, 25 feet of high-pressure 6AN hose, and a comprehensive set of fittings. The package covers fuel feed and return lines, with adapters and straight and 45-degree fittings to accommodate various EFI plumbing layouts. The lines are constructed from premium materials, with anodized aluminum fittings for corrosion resistance and durability in high-heat automotive environments, making it a solid choice for modern EFI installations.
AUTO OCCASION Injector Seal Kit
The Auto Occasion kit is designed for 99–07 GM Chevy Silverado/Sierra injectors, covering 4.8L, 5.3L, and 6.0L engines with common injector part numbers (12580681, 19421333, FJ887, 25317628, etc.). It provides injector seals, micro filters, and O-rings necessary for proper injector operation and leak prevention. This kit supports injector service and rebuilds to maintain EFI efficiency and consistent spray patterns across aging fuel systems.
Buying Guide
Key considerations when selecting small block Chevy EFI components:
- Engine compatibility: Confirm the block type, displacement, and intake configuration (multi-port vs. single-plane) for your EFI plan.
- RPM and power requirements: Large plenum and long runners benefit broad torque and higher RPM ranges, while single-plane manifolds favor high-RPM power for performance builds.
- Fuel system compatibility: Ensure the pump, regulator, and lines match your desired fuel pressure, injector size, and return/returnless system configuration.
- Reliability and durability: Look for corrosion-resistant fittings, quality hoses, and robust mounting hardware for long-term operation in varied temperatures.
- Installation considerations: Check fitment with existing fuel rails, throttle bodies, and engine wiring harnesses; some manifolds require additional gaskets or adapters.
- Maintenance accessibility: Choose components that are practical to service, such as injector seals and regulators that can be replaced without complete disassembly.
- Budget and availability: EFI parts vary by brand; consider availability of replacement parts and service support for ongoing maintenance.