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440 head gasket diameter for 0.040 bore?

Sonny

It’s all fun til the rabbit gets the gun.
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All I see on Summit is 4.350 and 4.375?
Thanks
 
So it doesn’t have to match the bore of the cylinder?
Thanks
 
Needs to be slightly larger than the bore. Wont seal if it hangs inside bore.
 
The important aspect of head gasket bore size selection tyoically osn't the block bore size but the cylinder head chamber. As a for instance 440 source stealth heads require a 4.410" minimum bore head gasket in my experience.
 
The important aspect of head gasket bore size selection tyoically osn't the block bore size but the cylinder head chamber. As a for instance 440 source stealth heads require a 4.410" minimum bore head gasket in my experience.
Fel Pro 8519 is what I use on 4.375 bore. should be fine for your application.
 
Fel Pro 8519 is what I use on 4.375 bore. should be fine for your application.

I have 3 sets of 440 source heads and none of them would work correctly with a 4.375 bore head gasket. Make sure you check the fire ring agaibst the chamber.
 
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