The Ford Barn - View Single Post - Easiest way to get my truck up to like 65 or so on the highway

Gene F · 02-13-2026, 04:36 PM

If you hold that engine wide open for 3 -5 hours it will have a major failure. Y-blocks had a bulleting come out about oil flow at sustained high RPMs. The oil level in the sump would "hunt" a bit. That means it would tend to starve a bit, and when that happens it will pump a bit of foam (oil). Foam means lack of oil.

The story I have always heard is never put a y-block on a dyno, and make a pull it will lock up. It is your engine, but if it truly is turning RMPs flat-out, it will be cheaper to get another transmission/overdrive, and deal with this, that try for more RPM.

Anyone else ever heard this?

02-13-2026, 04:36 PM	#13
Gene F Senior Member Join Date: Mar 2012 Location: Ohio Posts: 2,689	Re: Easiest way to get my truck up to like 65 or so on the highway If you hold that engine wide open for 3 -5 hours it will have a major failure. Y-blocks had a bulleting come out about oil flow at sustained high RPMs. The oil level in the sump would "hunt" a bit. That means it would tend to starve a bit, and when that happens it will pump a bit of foam (oil). Foam means lack of oil. The story I have always heard is never put a y-block on a dyno, and make a pull it will lock up. It is your engine, but if it truly is turning RMPs flat-out, it will be cheaper to get another transmission/overdrive, and deal with this, that try for more RPM. Anyone else ever heard this?