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To keep the heads bolted down to the
block,
ARP got the nod once again. These bolts are heat treated to
190,000 psi and are much better than Grade 8 bolts.
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Here you can see they have the same 12
point heads like the rod bolts do. This is a good thing because of the
larger valve springs on the heads. Because of the larger springs, it
makes it very hard to get at the bolt heads with a socket when
tightening them and with the small 12 point heads that these have,
there's no problem. The threads on these bolts are roll-formed instead
of cut. By roll-forming the threads, they become much stronger.
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Notice the chamfer on the washer. This
is to clear the radius under the bolt head. These washers are also heat
treated and ground flat and then black-oxide coated like the bolts.
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The head gaskets are made by
Fel-Pro
and are a composite type material. All of the gaskets I am using are
made by the same company.
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