I made 511tq at the wheels on my last 70mm setup before I went with a MP76 and a better tune. The more I look into it, I might just go 355. Would a 383 be any more unreliable? I've heard that if you spin a 383 to 6000rpm, its about like spinning a 355 to about 7500 due to the longer stroke and how much farther the rods and pistons have to travel in the same amount of time. I'd like to be able to cruise up to Indy (about 60 miles) without worrying if I'll break while playing around up there. Just weighing all my options before I really go through with it.

Thanks for the help Call911