1963-1966 Chevy Truck LS Frame Mount Side Fill Fuel Tank
When tackling an LS engine swap on a 1963 to 1966 Chevy pickup, this frame mount side fill gas tank addresses the critical fuel delivery demands of modern powerplants. Its built-in Walbro 400 LPH pump delivers steady fuel flow at horsepower levels up to 750, while internal baffling prevents starvation during hard braking and tight turns. The integrated 0 to 30 ohm sending unit connects directly to factory gauges for accurate level readings. Offering 18 gallon capacity and a design that slips beneath the rear frame rails, it installs cleanly on your classic Chevy.
Internally Baffled Tank Architecture
The 1963-1966 Chevy truck gas tank features a carefully engineered baffling system that keeps fuel firmly in place during abrupt maneuvers. As you brake or corner, these internal barriers prevent fuel from sloshing away from the pickup point, reducing the risk of fuel starvation and maintaining consistent engine performance under load. This design is especially important for LS-powered swaps that demand an uninterrupted supply of fuel at all times. By controlling fuel movement within an 18-gallon reservoir, the baffling also enhances safety and helps the pump work more efficiently over the long run.
Robust Fuel Pump Capacity for High Output LS Engines
At the heart of this tank assembly lies a Walbro 400 LPH pump engineered to support engines up to 750 horsepower. Its EFI-ready design delivers the steady, high-volume flow required by modern LS induction systems, ensuring that even at peak throttle there's no dip in fuel pressure. The pump's proven reliability under sustained demand translates to confident highway cruising and spirited drives without hesitation. Integrating the pump directly into the tank also minimizes plumbing complexity and keeps installation straightforward.
Convenient Side Fill Neck Integration
This tank's side fill neck is positioned for effortless access beside the frame rail, eliminating the need for cumbersome over-bed adapters or lengthy filler hoses. With this layout, refueling becomes a one-step procedure that reduces the chance of fuel overflows and preserves your truck's clean lines. The direct-inlet design also simplifies the installation process by requiring fewer modifications to the bodywork. Enthusiasts appreciate how this feature keeps the underbody tidy while maintaining the classic silhouette of the 1963-1966 Chevy pickup.
Integrated Sending Unit for Accurate Level Monitoring
Equipped with a 0 to 30 ohm sending unit, this gas tank interfaces seamlessly with factory instrument clusters, giving you precise real-time readings without aftermarket gauge kits. The calibrated resistance range matches OEM Chevy specifications, so there's no need for complex wiring or reprogramming of your dashboard. This direct compatibility ensures that your fuel gauge reflects the true fill level, preventing surprises on longer trips. By marrying modern sensor technology with classic truck instrumentation, the system offers reliability and authenticity in one package.
This tank delivers reliable fuel flow and a precise fit for your LS swap.