if vortec block it could be roller cam but i think that year was just flat hyd cam yes you could use your cam the weight on the fly is right it has to have the wheel it came with some Vortecs are good but some are just ok .you should check the for cracks they like to spit thru the center of the deck .what are you going to do with it bore it out put better pistons in it ? i would use your heads and the block if it is set up for hyd roller cam a lot of them came with flat lifters in hyd roller blocks if you have one of them blocks i would go hyd roller with it and use the heads you have you will have to run a dish piston if you want to run pump gas