What is the horsepower of a 1989 Chevy 1500 with a 350 v8 with dual exhaust?

Answer 1

stock hp is 210 dual will give 15 more HP. But you will lose low end torque. If u hav'nt done so yet, use Single 3" exhaust all the way back with a hooker 3" in & outlet aero chamber muffler. This will keep ur low end and mid range torque + extra HP. if u can get a set of shorte ceramic headers. not the long set.

Make sure u change ur O2 sensor to a 3 or 4 wire set up. Will give u better fuel control and performance.

Run a 180o degre tstat, this will give u the best off the line and pulling power. I also recomend u get some high temp cerimic paint and coat the entire pipe. 2 coats work best But wait till first coat dries b4 adding sec coat This will keep the heat in and help keep the exhuast vilocity up and better scavange the EX gasses out of the cylnder for more fuel and air volume be 4 the compression stroke. Worth Few extra HP. Keep The TBI set UP done right it can work better than carb set up. (And Im A old school dude) First car was 59 bonaville 389 4 brl

As 4 the Dual exhaust Use X pipe (not H pipe ) all the way out the back with dual cats theirs a reasion Police vehicals dont run cat back exhaust set ups. duals will help with Mid and top end. Long headers, single plane manafold, Cam and chip set works best for dual set up. if u have questions E Mail David_g_farnham@hotmail.com done dosen of set ups everone loves it