Any guesses as to what I might be looking at power wise or time wise?

88 IROC 305 TPI 700 R4 2600 stall converter 3.23 posi

Engine mods:
'83 305 block bored .020 over
260H Comp Cam
1.6 roller tipped rockers
World product 305 Torquer heads with 2.02/1.6 valves
TPI off of 88 Trans Am 305 car
Full length headers

I'm new to TPI so any suggestions would be appreciated

 

I'd guess with that combo you could hang with a Stock L98 or alttle better.

 

you defenitly have a stout 305 there but it is just that, a 305. i have one too but the small displacement just hinders the serious performance.

but as far as the power you should be looking at a little over 300hp and closer to 400 tq BALLPARK (a quick plug into desktop dyno)

 

I was lowballing it. I was guessing about 220 HP and about 310 TRQ