BY THE NUMBERS
HENDERSON MARINE 407CI
SMALL-BLOCK CHEVY
Bore: 4.155-inch
Stroke: 3.750-inch
Compression ratio: 11.4:1
Carburetor: Holley 830 cfm
Jets Percy's Adjust-A-Jet
Intake: Edelbrock Performer RPM
Carb spacer: Wilson Manifolds
Cylinder heads: Pro Comp
Intake valve: 2.125-inch
Exhaust valve: 1.625-inch
Gaskets: Fel-Pro
Block: '76 GM 400
Camshaft specs: COMP Cams
Valve lift: .647-inch lift
Duration: 246/258 degrees at .050
Rocker arms: COMP stainless steel
Pushrods: COMP 3/8 inch
Valvesprings K-Motion
Crankshaft: Scat
Rods: Eagle
Rod length 6.00-inch
Pistons: Mahle
Rings: Total Seal; 1.5/1.5/3mm
Coatings: Techline
Ignition: MSD
Water pump: Edelbrock
Damper: Innovators West
Oil: AMSOIL 5W20
Headers: Stan's
Mufflers: MagnaFlow