I have an 85 T/A with 3.27 gears, and a auto with shift kit,and cat back.
Right now it is a LG4 with a open element K&N.
These are the mods I'm planning.
1-Edelbrock performer
2-Comp cams XE256H-10
IN@.50 212 EX@.50 218 lift in.447 ex .454
3-Headers
Any guesses on power,Im hoping for at least 250hp before new heads.
Thanks!

 

I would expect that to get you close to the 250hp mark you're after. Now for the best guess on times. I can't be sure but I'll give it a shot.
0-60........6-6.5 sec.
1/4mi.......14.5-15.5sec.
Hopefully you'll be a little quicker than that, but I just wanted to be conservative.
If you take a walk to the really optomistic side like us car guys like to do there's a whole new set of numbers.
0-60.........5.5-6 sec.
1/4mi........14.1-14.5sec.
Hell I don't know it's tough to guess these things with all the variables. Hopefully you're faster than any of my guesses. None the less it will be fun to stomp on some stangs and rice rockets with your setup.
Jason

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Jason Lodder; 86 IROC-Z, 305 TPI/700R4, Flowmaster Exhaust, Hypertech Thermomaster Chip, K&Ns, Throttle body airfoil.