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Oyvind's combo will make power for sure, just thinking he might've gone to small on the cam as 500+" will eat a lot of duration

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Yes, I know. I do have some cams on the shelf, and this was the first try. Have not started the engine yet, but if too little cam I have another roller one symmetric at 242 degrees @050 with more lift. But as this is a street engine with manual and OD I would like to try the small first. In this combo I am not looking for high rpm horsepower, but driveability and spare power. I guess I will have a big detonation problem if running on gas. And with the small overlap I guess the headers do not help much either.....