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Another good product to use on the head bolts, water pump, intake, and timing cover is the Permatex "Grey Bolt Prep".
It's non-hardening, and made specifically for bolts that pass through water jackets.
It was also designed to help get more accurate torque settings on the bolts, since it's somewhat liquid upon application.
Have fun!

WD-40 Reverend Grip-Shift
85 Bronco XLT, '69 351W, C6, 9" Detroit, Dana 44 Tru-Trac, 33X12.5s
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