[Cliff R]

"Cliff fwiw you seem to have good gas in Ohio. All our trips regardless of vehicle the fillups in Ohio net us our best MPG."

Yep, it must be good.

When my son Matt first got out of the Air Force, he worked here for most of the summer. I sent him to town regularily to fill the fuel cans for the Ventura, as I don't drive it to town that much with the DOT's in place. I specified 89 octane, or 92-93 if they were out of it.

It ran fine, and we even raced it a few times. Right before Norwalk this year, I sent him to town to fill the cans, and reminded him to get 93 octane instead of 89. He said "what?". Yes, 93 octane......then I find out he's been filling them with 87 octane all summer long!

Well, the 11 to 1 compression engine never minded it a bit. The only problem I noticed is that on the very hottest days, when I had the engine really hot, it would try to "run on" for 1-2 seconds, but not every single time.

Never once pinged at any load, rpm, etc.

One comment on the 400 engine with an 067 cam and early small chamber heads. We have customers managing pump fuel with early GTO's and that set-up. Some have minor problems, others none at all.

A few have upgraded to the larger 068 grind, or the Crower 60916 Bruce mentions, and a few on up to the 60243. None of those with the larger cams have reported any issues anyplace, and some of those engines are in excess of 10 to 1 compression with iron heads.....FWIW.....Cliff