i have a 5.7 liter TPI motor installed in my z28 i want to know some ways to make it perform better. If any one can shed some light on this subject of me getting more horse and torque from my 350 itd be just great. prefferably somewhat cheap modifications. thanks  

What year? Generally, better intake system, including air cleaner and intake helps. Exhaust too needs upgrade. Depending on what year it is, a chip would augment all other upgrades. Mine is a 1992 and I will let you know how it works out. A .030 over 350 with rebuild rods, flat top 9.5-1 pistons comp cams 249-4 cam K-kit, performance cyclone intake with adapter to fit holley 670cfm tbi. The computer was modified by tbi chips   www.tbichips.com  160 degree thermastat. Headers and full 2 1/2" exhaust. 700R4 and 3.42 gear. Engine is in a gmc 1500 truck.  

http://www.carcraft.com/techarticles/116_0305_late_model_performance_vehicles/

everything you'll need to know

question on the thermastat. What temp is your engine running? I dont think the fan kicks on till like 200 right? So does it stay fairly cool? Just wondering if you'd pick up some power/or efficency since I engine typically run best between 180-200 degrees.

Won't know till next weekend. That is when the truck will be ready (keep fingers crossed)

mine usually runs at about 220 after a while of driving and i notice mine performs best in the 180 range too. i was thinking about getting a performance radiator and better fan system but i havent really looked into it yet. got n e ideas?  

allright keep me posted

jegs has fairly decent size aluminum radiators for pretty cheap, find one that is closest to your spec. Get rid of the mechanical fan and shroud and get an electric one. Size is very important tho. I belive it area the fan covers is supposed to equal 66 or higher percent of the radiator surface.?  

O'RIELY'S have goood prices on radiators. I bought one that measures 34" between tanks, 4 core alum., oil and transmission coolers, for about 170.00 with the tax almost 10% here in memphis,TN.