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Oh, we are building a hot rod, aren't we?īy the way, the factory designs were good for maybe 100,000 miles. And then it's just a 30 minute job to adjust the valves, and while your in there tighten the headers, set the timing, clean and gap the plugs. If this is done you will find that the only time they don't sound quite right is after a night of really hard running/fun. Use Shell Rotella for the wear problem, and poly-locks for the movement. And all this hype about having to adjust the valves all the time, Here's the deal: There are two things that cause the need for adjustment wear and something moving. The 079 cam has the great sound, and in a fairly mild 327 would be a better choice, but come on! A hydraulic can't come even close to producing the area under the curve that a solid will. This is a much better cam but in a 301 it has the same characteristics of suddenly coming on strong after the tach passes about 3500, but it likes to go to 8500, where as the "30-30" was good to 7500. We recently found the second design in reproduction, I believe it was Comp (not sure). They also supplyed the racers with "off-road" cams. This was for the production car, of which they had to sell a certain number to qualify to race. When the factory built a 301 to go trans am racing they rounded the 301.6 cubic inches up to 302, that way the uninitiated public thought they came up with something new. We had guys running roller cams on the street. They were running Isky or some other racing cam. PS the real heavy hitter street racers only claimed that they had the 30-30 cam. To answer your question look up the factory specs for a 1964 327-365HP Corvette if you want to be technically correct. There were better options but not as cheap. These cams took on mythical proportions because they were cheap and available at every Chevy dealer for the street racer. So many of the facts have blurred over time and often repeated after reading them on a message board. To get a solid lifter early Chevy to really run, you needed a hefty 410/456 rear gear to get them to wind up. But they did so the polylock was invented. The solid lifter cams used nuts that were slightly squashed so that they would not easily back off. This quickly passed the 365 cam because it did not need constant adjustment. In 65 they came out with the L-79 327-350 HP HYDRAULIC lifter cam. My 63 327-340HP solid lifter Corvette had smaller valves and a different cam than the 365 30-30 cam It used the 30-30 lash settings and was nick named the 30 30 cam. I'm pretty sure it shared the same cam with the Fuel inj 375 Hp engine. We always referred to it as the 365 cam because that was the rated HP of the carbureted solid lifter Corvette that year. The solid lifter 327 reached it's peak in 1964. I think each year the solid lifter engines changed in their HP ratings. Every time a new cam came out it soon overtook the old grinds. An iconic cam from that era but not as hot as the 327-365 cam that came later. If you walked into a Chevy dealer parts dept and asked for an 097 you got this cam. The 097 was the last 3 digits of the part number. Probably the FI cam but I'm not certain of it's original engine but probably the 283-283 FI or the 283-270 HP engines. The 097 cam was a factory solid lifter Corvette cam for the 283 engine.