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Fuel Tanks
Pontiac V8 Fuel Tanks
Where It All Starts — Fuel Tanks for Pontiac V8s
The fuel tank is where every fuel system decision ends up. On a Pontiac V8 it determines whether you can run an in-tank pump, whether the pump stays submerged in a corner, and whether there is anywhere for a return line to go. A fifty-year-old tank full of rust scale will also destroy a new pump faster than anything else on the car.
Butler splits tanks three ways: stock replacement tanks for a correct carbureted rebuild, Holley Sniper EFI-ready tank systems that arrive complete with pump and sender, and Tanks Inc EFI-ready tanks where you choose the pump and sender to suit the build.
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1. Which of the three you need
The choice is not about the tank so much as what is going to live inside it, so decide the pump strategy first.
| Stock replacement | Correct for a carbureted car keeping a mechanical or frame-rail pump. It replaces a rusted original with the same shape, capacity and mounting, and nothing about the car has to change. |
| Holley Sniper EFI-ready | A complete kit with the tank, a 255 lph pump, EFI baffling and a matched fuel level sender already in it. The right call when you want one part number to solve the whole tank question. |
| Tanks Inc EFI-ready | The tank, baffling and reservoir tray, with the pump module and sender ohm range chosen separately. This is the path when you want a specific flow rating or are building past what a single preset kit covers. |
2. Why an EFI-ready tank instead of converting the old one
You can retrofit an in-tank module into an original tank, and Butler sells the parts to do it. An EFI-ready tank exists because the original tank was never designed for the job.
| Baffling | EFI-ready tanks are built with internal baffling and a reservoir tray to keep the pump submerged under acceleration and cornering. Tanks Inc calls the tray an absolute necessity for fuel injection. |
| Corrosion | These tanks are coated galvanized steel, then powder coated, rather than bare steel with fifty years of condensation in it. |
| Fit | The pump and sender are recessed so the tank installs without modifying the car, and it looks like an OE tank once it is up. |
3. What goes with a tank
Plan on a few supporting parts regardless of which direction you go.
| Straps | Butler stocks gas tank straps for A-body and Firebird applications. EFI-ready tanks that sit deeper than stock come with longer straps. |
| Filler neck and cap | Some tanks include the filler neck and vent pipe and some do not, and Butler stocks twist-on GM gas caps in plain, deep cam and shallow cam versions. |
| Sending unit | If the tank does not come with one, match the ohm range to the car's gauge. Butler stocks both standard and hi flow senders. |
| Venting | A tank converted to fuel injection must be properly vented, which is what the rollover vent valve is for. |
If the car is carbureted and staying that way, buy the stock tank and move on. If EFI is anywhere in the plan, even years out, an EFI-ready tank now saves dropping the tank a second time later.
Tanks Inc Fuel Tanks-EFI Ready
Not sure what your Pontiac needs?
Call our tech team at 866-762-7527. Tell us your engine, heads, car, and power goal, and we will put the parts together as one combination that works.