I am still using the flat tapped cams and have not lost a cam or lifter yet. If I was doing a 327 I would use 2.02 heads L79 cam, 355 or 373 gears and a 68 Camaro will haul but. If you want more just drop an L78 in it with 410 gears and be done with. If you go roller cam use good stuff, when roller lifters come apart usually the whole engine is toast. Just my 2 cents
