Copper Gaskets

Charrlie_S said
See post #7
Nitrous is almost as hard on head gaskets as boost. I have been running N2O for the last several years. Approx 10-1 CR and 150-200 HP shot on a 170 CID slant. Stock OEM head gasket, and head bolts. I do put hardened washers under the bolts, and torque about 5-10 LBS over stock. Never blown a head gasket. Main thing is to get the head and deck surface flat, and the proper finish.
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Nitrous can be harder or softer on the engine depending on when it’s activated and how much is activated. If you hit the button after peak torque you can make a nitrous deal live a long time. The head and deck being flat is super important, I agree, but also the timing curve.