830 horse on the dyno

I'm the owner of car and motor. The old combination made 880hp . Dropped a valve had to get one new head . The new head needs a little more port work to get back to 880. It's Indy aluminum block 572 cu.in. 440-1 heads ported indy tunnel ram 2 c&s 1000cfm carbs comp 695 lift cam jesel valve train A&A 727 trans with brake transmission specialties converter. I built the car myself in my 2 car garage . have own it since 1975. I've made a few changes over the years. Any question just ask no secrets