68 valiant project....440 tapping ticking sound at 2500 rpms and up

I might as well post some pictures of the car too. Its a 68 valiant with 440 727 swap. Here is the list of what ive done to it.

440 sixpack ported 915 heads (just under 500ish hp)
Cope 727 prorace with reverse manual value body and PPP shifter
TTI 2" headers
3" x pipe w borla Xr1s dumped infront of rear
19x26 radiator with 12" fans
Wilwood discs front and back
Mini tub
Calvert monos with smith assassin bars
15x10 steelies with hoosier quicktimes 28x13.50
8.8 cut down with 4.10 limited slip

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