something is wrong.
What kind of fuel pressure do you have??
And are you running 12* and a chip???
that could be like 16* timing.
I would dump the chip...it should still pull hard to about 5500.
4.10's alone put my notch in the 13.80-13.90's w/ trap speed around 100.
Your 60' is not all that bad...what kind of tire?T5 or AOD??
------------------
4.10's,long tubes & 75 shot...Goes 12.50's
Check it out at
http://www.burnouts.stangnet.com
11's coming soon!!!!
Heads,intake and cam are all here