How big is the fuel tank on the F body?
On the F-body platform used by the Chevrolet Camaro and Pontiac Firebird, fuel tank capacity typically sits in the mid-teens to about 20 gallons, with most models around 18 gallons. Exact size varies by year, engine, and trim.
From the late 1960s through the early 1990s, the F-body underwent multiple design changes that affected tank size. This article outlines typical ranges and how to confirm the exact specification for a given vehicle.
Generational overview of tank sizes
To provide a clear picture, here are general ranges by generation. The values are approximate and dependent on options; always verify with official documentation for a specific VIN.
- First generation (1967–1969): roughly mid-teens to around 18 gallons, varying by model and emissions equipment.
- Second generation (1970–1981): typically around 18–20 gallons as tanks were adjusted for range and emissions constraints.
- Third generation (1982–1992): commonly in the 14–18 gallon range, with some variant-specific differences due to aero and fuel system changes.
These figures are intended as a practical guide. For precise capacity, consult the factory specifications, owner's manual, or a VIN-specific parts guide for the exact vehicle.
Why the capacity matters to owners and restorers
Fuel tank size influences driving range, fueling convenience, and restoration accuracy. When diagnosing fuel gauge behavior or planning a performance build, knowing the original capacity helps align expectations with the vehicle's fuel system design.
How to verify your F-body's exact fuel tank size
For accuracy, check the owner's manual and the original build sheet, or contact a GM dealership or vintage parts database using your car's VIN. Fuel tank labeling near the filler neck and the underbody cross-section diagrams in service manuals can also confirm capacity.
Summary
In short, the F-body's fuel tank capacity varies by generation and option, but most examples fall in the 14–20 gallon band with many around 18 gallons. For precise numbers, reference official GM specifications for your specific vehicle.
