What octane gas in a 351M/400? - Off-Road Forums & Discussion Groups
Ford Early Bronco, 66-77 All discussion of Early Ford Bronco's to 1977

 
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post #1 of (permalink) Old 12-25-1999, 10:24 PM
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What octane gas in a 351M/400?


I'm looking at buying a '78-79 Bronco. Someone told me that you had to run high octane leaded gas in the 351M/400 engine these
trucks came with. Is this true or can you run 87 octane unleaded?

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post #2 of (permalink) Old 12-30-1999, 05:00 PM
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Re: What octane gas in a 351M/400?

Welcome to the Darkside Thump, never thought I'd see you over here??? Anyway i have a couple of friends both running the same set-up and as far as I've seen they just put in what ever's the cheapest not wonder fuel or nothing. I'll ask them just be sure, the next time I see them which should be this weekend.
Later!

Chris J.
[img]/wwwthreads_images/icons/wink.gif[/img]It's not the Biggest, but at least I use it![img]/wwwthreads_images/icons/wink.gif[/img]
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