| According to the online manual (which is for a 90 I believe) there is no difference between NA and TT cams, the only difference they list is TT auto cams having a slightly shorter intake duration (240 degrees instead of 248), everything else being the same. [ http://www.300zx-twinturbo.com/cgi-bin/manual.cgi?list=em&dir=&config=&refresh=&direction=forward&scale=0&cycle=off&slide=67&design=default&total=70 ] However in my 95 manual the TT auto cams are also listed as having a little less lift. So really as long as you didn't get them from an auto TT they should be the same.

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