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A little hydrogen cell works wonders and so does a cup or ATF in the fuel tank with a full tank. Make sure you have no slack in the timing chain. IGN coil of high out put will help. Advance ign timing a few degrees. Adjusting trany shift to a higher MPH to get it moving in first gear. Change to 1.6 rocker arms and new valve seals and springs helps a lot without pulling the heads. Its maybe 50 horses and atleast 10 more MPG and that will pay off quickly.

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How to add power on my 89 silverado 1500?

I am looking to add some power to my 89 silverado. It has the original 305 v8 engine. I was already planning on an upgraded exhaust, and would like to get this thing to pump out out as much power as it can practically handle. Any ideas/reccomendations?

If you have a service manual there is a test connection under the hood that goes to the fuel pump for actuation and testing. If that does not yield good results then a ecm might be the problem, but make sure you check all of the wiring first. Motor or Mitchell make a decent service manual but the dealer manual is the best. And no there are no cut of switches like a ford.

exhaust,throttle body spacer,a prom chip.There is allot of info on the net on how to modify the 305.Price this all out then compare to replacing the 305 with a 350 rebuit motor.