head gasket question

[CobraV8]

I want to use Fel Pro #1011-2 head gaskets with my new engine. Compression ratio will be 9.7:1 with these gaskets.

Recently someone told me he had problems with the #1011 gaskets, and recommended Fel Pro #8548-pt2 instead. Using these gaskets would result in 9.5:1 compression.

Are the thinner 1011-2 really more prone to blowing?

The engine is naturally aspirated/no nitrous. I'm using Edelbrock aluminum heads, so I think there is no point in lowering the compression ratio more than necessary.


Thanks,

Simon

[Rick Parker]

The 1011 was one of Fel Pros original HP gaskets. After it was on the market a while it was determined that the stainless hard ring around the cylinder was causing aluminum heads to Brinell an created an indention where they contacted the head. The 1011-2 was brought to market to combat this situation. I has a pre flattened copper backed fire ring to help eliminate this issue. They are much easier on the head surfaces.

[Manowar]

We use FelPro #1031L and 1031R with no problems. .041 Compressed.