Relatively, yes. I'm in the process of building a 283 for a friend's father in law. The old guy's 80. 65 short bed step side Chevy truck. 283 with a muncie 4 speed. He lost his wife a couple of years back and now wants his truck "right" after a local machine shop just screwed the whole engine up. I'm going back through it making sure this time it's done right. He's pretty excited about it. Lookin at him, you'd swear he was no more than 65. In fact, he insisted on pulling the engine himself and he's insisting on putting it back in himself. I'm hope I'm in that good a shape at 80.