830 horse on the dyno

They sound good but it's a bit scarry at that rpm with a long arm crank and rods. Quality parts are a must.
Oh yeah I know, I put a power adder rod in my rotating assembly thinking down the road but I know I increased some side loading and have a stock 400 block pushing real close to 700 HP
It's scary but awesome to know something I built myself can do what it needed to