valve unshrouding + porting and polishing intake/exhaust ports

[Abdullah AL-Kandery]

i have AFR 190cc LT1 heads on my 94 camaro. they didn't give me
any performance gain. is that mainely related to valve shrouding. you
can see my heads at :

ftp://efi332.eng.ohio-state.edu/incoming/AFRchamber.JPG
ftp://efi332.eng.ohio-state.edu/incoming/AFRintake.JPG
ftp://efi332.eng.ohio-state.edu/incoming/AFRexhaust.JPG

to check them. also is the
performance gain limited by the bad design of the intake/exhaust ports?
do intake/exhaust ports need reworking?,  how to unshroud the vlaves?
and
how to fix the ports if they need fixing (polishing or porting or both)?
let me know, TIA.

Abdullah
94 Z28