Tires won't chirp anymore, why?

[jeb]

I had all the mods in my signature. The only thing I did for the 14.7 was a T-5 swap. Not to mention the 14.7 run was'nt even a good run, it still bogged a little in first. With the AOD I launched it at 1800 and with no tire spin (not even a chirp)it went 15.5. I was kind of dissapointed with the AOD's times, but the cam hurt my low end power.

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90LX Ragtop.
15.5@91 w/Aod
Strut tower brace, K&N, 2.25'' Flowmasters, Hollow cats, Crank pulley, Crane 2031, Crane rockers, Holley FPR, Heavy duty clutch, and alum quadrant.
Need Gears Bad!!!