Deck height

krazykuda said
First, I would like to say, that I would use the 3.510" bore gasket.

Since your stock bore is 3.400", you should always have the fire ring in the gasket larger than the bore. If it is the same size as the bore, and you use pistons that stick up above the head deck, then the piston may hit the gasket.

You need to find out the compressed thickness for the gasket that you plan on using for the long term. Most manufacturers can give you the volume of the gasket if you contact them.

For the numbers that you gave:

Bore = 3.510"
thick = ..037"

Area of a circle = Pi/4 x Bore x Bore = (3.1416/4) x 3.51 x 3.51 = .7854 x 12.32 = 9.68 inches squared

Volume of gasket then is:

Area x thick = 9.68 x .037 = .358 cubic inches

Convert to cc's:

.358 x 16.39 = 5.9 cc

I called Napa and inquired on oversized head gasket, main store or distribution center. They knew nothing about oversized gasket.

I inquired directly about the 3.510 head agsket and again they said only a standard bore. I asked if oversized was avail in other manufacturers gaskets, they gave me a number for a local engine parts W.H dist and although they carry many different names they again were un-aware of any oversized head gaskets. Just the standard bore.

Any suggestions?