I used N2O with TFS heads and cast pistons. Went fine for a couple of years. The I got greedy at the track one day, went to 200 horse shot. GOODBYE. Never did find that one piston. If you stay at around 100-125 you should be fine. Nitrous will also not crack the head...it will look like someone took a blow torch to it, and melted it. Nice thing about alum. heads..they can easily be fixed.
Ron
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65 Mustang Fastback
347 Stroker, C4 with 4.56
10.68 @ 122 N/A
9.74 @ 137 w/ N2O
www.fastspecialties.com
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