What vacumm lines can I delete on 5.2l? Like cruise control chsrosl can ect. Will that make more power or make it run better? I don't have to smog.

 

1) Find the factory service manual for your year truck.

2) Figure out what's needed for how you run it, and what's not.

3) Delete what's not.

4) When the truck doesn't run right, put it back.

RwP

 

IMO taking emissions controls off of the truck will not make any more power. The only exception would be if the part is bad, ie. a stopped up cat. converter. But again, removing vacuum hoses is not going to help and will probably cause problems. The charcoal canister is needed with a sealed fuel system.

 

those trucks had minimal vacuum lines as it was as comparted to engines of, say the early 80s.... what is going on that you want to eliminate them? PCV, brake booster and crankcase ventilation absolutely gotta stay.

 

To which I'll add evaporative emissions. EGR is nice if you drive on the highway; is not needed for a race car. (It has been proven to increase gas mileage at highway speeds).

The only other thing my truck has (a 1988) is cruise (which if you have, you'll need vacuum for that!) and A.I.R. (which was only needed for the 1988 vintage catalytic converters; it can be removed.)

Oh, and the thermostatic valve for the hot air injection (when the truck's really cold, it pulls hot air from around the exhaust manifold to help that really cold fuel mix better; most of the time the valve is shut blocking the hot air).

That leaves only two items I could pull off my truck (A.I.R. and hot air injection); everything else my truck uses.

RwP