Can someone please fill me in on what these things do? I want to get EVERY little drop of horsepower out of my tuck. What other things are there besides cold air intake and throttle body spacer, supercharger, and nos?
easy bolt-on. A cam involves possibly having to pull your engine to install depending on your model. On most 2wd models the oil pan can't be removed to get the timing cover on and off correctly unless you pull the engine up to clear the front crossmember. Changing the cam also requires replacing at least the valve springs. You can reuse your lifters if in good condition, but most companies won't warranty a cam unless you install new lifters with it. You have to pull your valve covers to remove pushrods and the intake manifold to be able to get to the lifters. It's not a job for a novice. Oh, and you would also need a new timing cover since the newer ones aren't re-useable. A cam is eaiser/less expensive to upgrade when you're rebuilding the whole engine. IMHO
Actually the pulley on the crank will be smaller, thus the outer edge of the pulley will be spinning at a slower speed. The crank pulley alway turns at the same speed no matter what size pully is on it, so a smaller one will make the accessories spin slower b/c the belt will not travel as far of a distance with every revolution of the crank pulley.
March makes a kit with a crank pulley and an alternator pully. The alternator pully is smaller than the stock one, but casues it to actually spin faster. This is b/c the alt pulley is dependant upon the crank pully. Since the alt. pulley is smaller, the distance the belt has to travel for one revloution of the alt pulley is less, and can spin it more times than a larger pulley on the alt.
You want the alt pulley to psin fastyer b/c the smaller crank pulley will slow it down and you won't get the required voltage for your electrical system.
The March set is #4460 and runs about $85-$90 from summit