How to Install & Tune a Mighty Demon 750 Double Pumper 4 Barrel Carburetor

How to install & tune a Mighty Demon 750 double pumper 4 barrel carburetor with mechanical secondaries. Same will apply to 4150 style Holley carburetors. 1st thing is to make sure your engine is mechanically sound and ignition timing is correct. I run mine at 40 degrees total. A new carb will not bandaid existing problems. I cover: Setting float level. Replacing main jets. Installing accelerator pump nozzles. (Normally if you have a stumble or hesitation going from idle to wide open throttle quickly it's because the accelerator pump nozzles are too small. Go up a few sizes and see if that helps.) Adjusting idle mixture screws. Fuel inlet line is a Demon Carburetion small flange-style inlet kit -6AN 3/8" hose system. GoPro Hero 11 Mini footage. My tune up: --Primary main jets: 79 --Secondary main jets: 85 --Accelerator pump nozzles front and rear: 0.040" --Air mixture screws: 2 out on all 4 corners --Idle feed restriction: 35 --High speed air bleeds: 36 --Primary power valve: 4.5 --Primary & secondary accelerator pump cams: Pink --Boosters: Down leg Notes: —Float bowl screw torque is 50 in.-lbs. —Carburetor base to intake manifold torque is 80 in.-lbs. --Running float levels too high will cause flooding and hard starting --Car is is '69 Camaro --Engine is a 10.75:1 compression, pump gas 383 stroker small block Chevy with 195cc Airflow Research Eliminator aluminum fully CNC ported heads --Comp Cams Xtreme Energy 294H hydraulic flat tappet cam —Pete Jackson noisy gear drive --Simmit 1.5 roller rockers --Edelbrock Victor Jr. single plane intake manifold --Hooker Super Competition 1 3/4" headers --MSD Digital 6 ignition, Blaster 2 coil, Pro Billet distributor --125 shot NOS Powershot plate nitrous system --TCI reverse pattern manual valve body TH400 --TCI Super Streetfighter 3,500 stall nitrous converter with balloon plate --12 bolt with 4.10s —Carburetor stand is an IBT 4150 from ebay --This is the second Demon carburetor I bought that the Idle Eze was stuck. I bent a screwdriver blade trying to open it so I left it shut. My combination runs better anyways with the Idle-Eze fully closed.