I have a 1965 thunderbird with a 390 ci engine. I would like to know if I can use unleaded gas in it?

50

Asked by Joe Aug 08, 2015 at 08:41 AM about the 1965 Ford Thunderbird

Question type: General

2 Answers

223,915

No. Unless you have replaced the valves in the heads. The older motors require leaded gas. Should refurbish the motor to modern day components.

15,925

It will run with ethanol fuel but non ethanol is much better for it.

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