You don't have to pull the timing cover. I leave the manifolds on until the head is off. Make sure you have a little metal bracket/shelf under the cam sprocket, and that it's not bent down, before you take off the cam sprocket bolt, or the tensioner will pull the chain too far down to get the sprocket back on the cam. There's a fix, but not real easy. The head will lift off over the sprocket, gingerly. You have to be real careful with the head gasket sealing. I spend at least an hour scraping the block free of gasket and gunk. Put a smear of rtv on the timing cover/block joint over the timing cover gasket end, or you'll have a leaker there. Clean the block and head religiously with acetone to get an oil free surface. I put the mani's back on before I set the head on, and I really like to have two sets of hands setting the head back on the block. Make sure you put a smear of rtv on the upper/lower rear cam bearing mating surfaces. No gasket, and open to leak territory, and it will leak if you don't seal it. Same for the cup that seals the rear of the cam bore, and the semicircular rubber filler in the front half hole in the head. Torque it in three stages to 79ftlbs. Use the Starion turbo head gasket from an 88-89 model. Felpro has it. Number is like PT9312, or close to that. The 8000 series number is the n/a gasket. Ok, but not as good as the turbo gasket.