what type of gas should i be using for a 292 yblock in a 1964 f100

 

If you drive the truck alot you should use some type of lead substitute if the engine hasn't been rebuilt using hardened valve seats.
I would think you would want to use a premimum fuel in something like that to help it run right.....

 

My FE will run on crap 87 octane but will ping under heavy load. Completely useless towing with anything less than 92 in it (and I don't have the timing advanced more than the stock setting). I've read that older fuel was much different than what we have now and most older vehicles will need a higher octane to perform properly. I've found this to be the case even in my very low compression Austin Mini.

 

I run the cheep 87 slop on my 64 292 and have no issues.
Premium is a waste of money unless your CR is higher than 9 to 1, or your trying to dodge ethanol. Oh yeah, our great hope ethanol wont burn in a low CR engine like your Y. Tree huggers forgot to mention that.

 

I run 93/94 octane with lead additive every other fill-up in my '64 292. It seems to like it.

 

This always becomes a great pissing match type thread. My FE has been rebuilt but tows with the cheeeeepest gas to be found with no problems.

Dwight you need to do some tuning if you don't have high compression.





John

 

My truck is tuned to factory timing, plug gap, etc. I have not tried to 'tweak' it for more power. I was having a number of issues with it previously and set everything to stock so I had a base to start at. The carb was horribly mis-tuned by the PO in an attempt to increase fuel mileage. That has since been corrected. Vac advance works, Pertonix electronic ignition removes the points, plugs are burning nicely now. I feel it's tuned adequately as the factory desired.

I just read in Vintage Truck magazine that gas is not only seasonally blended, but regionally as well. It's an interesting article. This may also have something to do with why my truck loathed 87 octane back in May/June when I had problems. I have not tried going back from 92 since. For what little I drive mine, it isn't that big of a cost issue, and when I'm towing I don't want any headaches.

Did my fuel at that time have more Ethanol in it? Entirely possible.

 

i run 87 allways and have no problems for my FE. even towing firewood

 

i run 87 without any problems. engine is stock and i drive it every day.

 

Dwight,

I would look to a hot spot carbon buildup for the ping, or look to the advance springs being a little weak in the distributor.

You should see the crap they call gasoline here in Phoenix. It don't look like gas or smell like gas! But the 472 will run on the cheep crap all day and the crew's 360 (no ping on load ) ran on the cheap stuff with a little work on the distributor advance weights and springs.

Garbz

 

Premium fuel and lead substitute are a waste of money with stock compression ratios.. Odds are the heads have all ready been rebuilt. The exhaust valves on Y's are sodium filled.

Garbz