low compression head gasket

[BOATRIGHT]

I have seen these for sale on various omc parts sites and wondered what is the difference between a normal head gasket and low compression head gasket ?

 

[MGuckin]

Re: low compression head gasket

I believe it is just the thickness.

 

[clanton]

Re: low compression head gasket

To allow some of the older engines to use 87 and 89 octane fuel.

 

[BOATRIGHT]

Re: low compression head gasket

Thanks guys always looking to learn.

 

[grandx]

Re: low compression head gasket

What does a low compression head gasket do to the original horsepower rating?