I just got back from the Dyno and ran my 409Sb. Ended up with 509.9hp at 5,500rpm and 513.85 lbft torque at 4,800. I was happy with the results, should have some stump pulling torque for my camaro! the lowest the dyno sheet went was 3,800 rpm and the torque was 489. Motor goes in this weekend!

Motor Specs:
400 2bolt bored to a 409sb. 6" Scat rods, KB Icon Pistons, Eagle Crank, Brodix 11X Alum. Heads (what I had so we used them), Crane Hyd Roller Cam, Team G Intake, Demon 800 carb, MSD Ignition, and Hedman 1 7/8" Headers. I don't know the cam specs but the guy who owned the dyno said this same motor with different heads would pull 560-580hp no problem. Makes me think a little!!

Car:
1971 camaro
Turbo 350
3,800 Stall
Moser 12 bolt 4:11

motor was already tuned in the video they were just showing us how the dyno worked.

Youtube link 2nd run:
YouTube - 509.9 HP ~ Dyno Run 409 Small Block Chevy

Youtube link run #1:
YouTube - Dyno run for my new motor!

 

AWSOME bet u can't wait to put her in , good luck