I changed my fuel filter and noticed a big diff in power. What can I do to a stock 351W to get some extra Horses. Ive already got the K&N filter and wires. I have a daul exhaust without headers. I want that thing to smoke the tires off the line. I did notice that the truck has more power when its cooler outside???

 

WHAT YEAR IS THIS TRUCK? IS IT CARBURATED OR INJECTED?

 

89 EFI

 

you can try a computer chip or a hotter ignition those work really well. you can also go with a bigger exhaust.

best of luck