OK then. What you need to remember is that the displacement affects how the cam acts. The exact same cam that acts obnoxious in a 350 would be a snoozer in a 455. That is why I said most of those cam charts are generally intended for the 389/400 engine as it is in the middle. So when I used the Crane HMV260 in a 1976 350, it was very peppy, grumpy idle, and acted like it had an attitude. The same cam in my 1977 400 TA was milder with a smooth idle. It seemed like it should do more, but the short duration held it back. Yet in the 350 it was perfect. Meanwhile it was advertised as an RV/off road/mileage cam. But in a 350 it was a lot of cam. That is why I advised against the 068 in a 350. It may roar in a 400 bit I think it would kill a 350. I also would never use the Crane HMV278 cam in a 350. It was cranky in a 400, a 350 would never like it. Those are the only two aftermarket cams I ever tried. I have used lots of two and four barrel Pontiac cams over the years and I like the 066/067 the best. It was the base cam for the average GTO 389/400 engines. Remember the factory gave you power that still idled well and didn't overheat and should last 100k miles. It should work well in a 350. They are getting hard to find though and you would probably need to get similar lift and duration numbers from an aftermarket cam. I think Melling makes a blueprint series of old cams. Then there is the arguments over using the same lift/duration or adding more to the exhaust side on a Pontiac. I agree with that- more exhaust bias. Yeah, I get the "455 it" complaints too but I even like the 301 so what does that say?
