Here’s some dyno data for a few parts and configurations. Yours will vary.
69 Chrysler 300 with 505ci, A727, 2000rpm Stall, 3.23 Sure Grip, 2.5” TTI Exhaust with Dyno Max Mufflers.
505ci Specs,
Edelbrock Performer Intake Manifold,
Lunati Voodoo, Duration (Int/Exh): 268/276; Duration @ .050...