Installing a performance camshaft is arguably the best decision you can make if you're pushing a lot of torque. On a budget, I recommend a flat grip cam from Summit Racing. These are generally the best quality products for the cost. But you may need to shop around depending on how much you hope to spend. Drain the coolant, then remove the radiator and then unscrew the fuel pump. Next, remove the distributor and intake manifold. When you remove rockers, rods and lifters be sure to keep them in order in case you want to go back to the original later. Ideally, you will have a harmonic instrument. If you do a lot of engine work you should invest in one of these. However, if it's a one-off project, you may be able to rent one from an auto parts chain. Remove the oil pan bolts enough to loosen and drop the oil pan. Only the timing cover needs to be removed, so total removal of the oil pan is not necessary. The fewer loose parts, the better. The pan gasket can be a one-piece or multi-piece gasket set. I prefer the one-piece because it is less prone to breakage and limits the need for patchwork of silicone gaskets. Measure between the timing cover and the grille to see if the old cam can be removed with the grille still in place. This will avoid the need to loosen the engine mounts. If not, you will need to loosen the engine mounts to tilt the engine off the mounts to remove the old cam and install the new one. A Posi-lok 3-jaw puller is used to remove the old crank. Use a brass awl to place the new gear on the crank. It can be installed in one of three positions (4 degrees advanced, 4 degrees retarded, 0 degrees). You don't need to grade the cam, although you can if you want. Carefully align the timing marks on the crank and cam gear. Put threadlocking compound on the three cam bolts. It is also best to use a machinist's scale to ensure that the cam gears are properly aligned. With the timing set and new gasket in place, install the cover and replace all pan bolts. You may want to consider using a silicone sealant to prevent oil leaks.
tags