I have a 93 K1500 4x4. I pulled the stock 350 about 6 months ago and rebuilt it using the following parts.

GM Performance Parts TBI Vortec Intake
L31 Vortec Heads
Crane Came #114122
Keith Black #193 pistons (9.6:1 Compression Ratio)
Stock crank and connecting rods.

I modified the fuel pressure by drilling and twisting the regulator in the TBI unit and set it to 16 psi.

I also put a Walbro 160 ltr fuel pump in the tank.

Also put a set of headman headers on it. Topped it off with a K&N filter.

Finally had a custom chip burnt from TBIChips.com.

My question is, what other modifications can I do for more power? Sure, its way stronger than the stock motor, but now that I've had it for 6 months I want more!!!

Suggestions?

 

Ditch the TBI and put on a TPIS mini-ram setup. Use a FAST computer system to control it all and that thing will come to life.