I have run 250 horsepower jets in a single plate Cheater system for a lot of passes on mild 383. It's pretty safe if you don't get greedy with timing.
Yep, timing is what kills motors not lean. Also the Cheater N20 solenoid has a .093 orifice so you won't get 250hp from the biggest jets, maybe around 200 tops....I only managed to get a 160hp increase from 110/110 jets according to my mph but that was a rich set up in those days, much cleaner today on the fuel side, and thats when you gotta watch the timing even more.
