HO and NON-HO Compression

Mooney · 08-16-2004

I know the HO and the NON-HO had difference pistons, but how much of a difference is there in compression ratio between the two? Saying the one had E7 heads and the other didn't.
Thanks
Luke

GTRaptor · 08-16-2004

E7s will give you more compression than the E6 castings, about half a point or so if you use the same piston.

Mooney · 08-16-2004

Thanks GTraptor, I was concerned that an engine I had purchased wasn't a true HO and wanted to see how big of a difference there'd be in the compression. But it turned out to be a HO so no biggie.
Thanks again,
Luke

GhostDog 5.0 · 08-16-2004

Check the firing order to see if it is a true HO

Mooney · 08-17-2004

I did just that and all the parts checked out as well. So i'm positive its the HO now. Thanks though.