Oregon Cam #346 - questions

csheehy said

@Jim Kueneman - from my opening "Most of my driving is twisty and hilly back roads at about 40 to 50 mph The other 40% of my travels are highway 65-70." In hindsight, I was clearly missing some details...

I'm not sure of what RPM range I'll be in with the gear change, but like you, I'm not a racer, and don't wind-up the engine, nor do I do donuts - although I may spin a tire now and then - I'm not going to do long-hard burnouts. I'm looking for a stout (torque) street engine. This is a toy for me that doesn't see snow, but I will take it out in the rain.

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This is why I made a comment regarding the duration figure. It's pretty big. Mine, at 250@ .050.....I did for two reasons. One, because it was necessary because the static compression came out too high, due to the head being milled too much.....that was actually an accident, but I still must utilize it.

Two, because simply, I want it to sound nasty. I want it to be FUN. It's a light car, 64 Valiant 2 door about 2650 pounds with 3.55 gears and 13" tires. Probably has an effective gear ratio closer to 3.91. It WILL have a 4.10 after I put the ford 9" in it. So, my situation is a little different. I don't mind a little loss on the bottom end, plus, I'm replacing a 170 with a 225. 55 more cubes, a lot more compression four barrel carburetor, bigger cam, bigger exhaust......it may NOT experience a loss of bottom end in comparison. It's gonna be FUN and that's all that matters to me!