I have been told you can run regular unleaded for a long amount of time before the seats will wear. Changing the seats now will require major engine tear down, and changing the seats when they wear later on down the road will as well.Is it true you can run middle grade gas in a 1970 302 and valve seats will be fine or do i need to run something else. thanks for the help
some states still have it, its renamed avgas. you cant put it in a modern car, but i use it in my 63 galaxie with the 427 8v. The engine was rebuilt 30 years ago and hardened seats installed. But todays octane rating doesnt work with this motor. I dont use it necessarily for the lead but for the 109 octane.Different parts of the country had it longer
I believe so, but you will have to check with the machine shop that did the work. 25k says yes.
in my area, the only place you can get purple is at the track which is at least fifty miles away. I can get avgas down the street. plus avgas is $4.50/gallon. no mixing necessaryOr you could always run a little Sunoco Purple 100. It's leaded. I always mixed it with 93 octane in my street bikes. Smells good too. :thumbsup: