I have the F-cam in my car. and I love I have installed "straight up". Retarding the cam will kill what little bottom end you have already, unless you plan to spin that motor well over 6000r's If anything I would say advance the cam 4 degress and then do a compression check and do a compression check with the cam set at 0. use the setting with the highest readings. that little blue bottle will do the rest, I know I have one too. 11.96@118 on slicks. my .02 hope it helps!
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1990 Mustang GT Trick Flow heads,F303,Mac cold air,FMS 65mm tb,73mm ma,FMS 1.6,GT-40 intake,MSD igintion,NOS Big Shot@150,Mac equal shorties,Mac h-pipe,American Thunder flows,Centerforce dual friction,TTC 3550,alm drive shaft, 3.73's, HPM subframes, k-member brace, strut tower brace.. amongst others.
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