What would you suggest to be the best power builders for a 350 TPI in my 88 Trans Am GTA that i just bought? Thanks.

 

Two important questions must be answered first.

1.) How much work are you willing and able to do?

2.) How much money are you willing and able to spend?

Obviously, a great setup would be a MiniRam-ed 383 with Air Flow Research 190cc heads, a HOT LT4 camshaft, and full length headers. But that's about $7000 worth of parts and an engine swap.

For more modest gains, you could upgrade your TPI to a Vortec baseplate and high-flowing runners, get a set of Vortec heads, a high flowing exhaust system, and a 52mm throttle body. That setup would get you a little over 300 hp and would run about under $2000.

Or you could get the high flowing runners and standard type base plate, leave you cyl heads alone, but get a higher flowing exhaust system. You'll get about 285 hp and it would cost you about $1000.

Of course there are the smaller things like air filters, TPI airfoils, ignition upgrades like high-powered coils, MSD capacitive discharge boxes, and the like. The gains from these things are often un-noticeable and sometimes negligible. But they're generally very inexpensive and ok starting points.