|Displacement ||406.0ci |
|Bore x Stroke ||4.155 x 3.750 |
|Rotating assembly ||Probe forged-steel crank and rods |
|Pistons ||Probe forged |
|Compression ||11.1:1 |
|Heads ||Dart Pro 1 CNC, 227cc |
|Chamber volume ||66cc |
|Carburetor ||825-cfm Mighty Demon |
|Camshaft ||Comp Cams hydraulic roller |
|Valve lift ||0.562/0.580 inch, intake/exhaust |
|w/1.6 rockers ||0.600/0.619, intake/exhaust |
|Duration at 0.050 ||248/254 degrees, intake/exhaust |
|Lobe separation ||110 degrees |
Given that we were dealing...
Given that we were dealing with shaft-mount rocker arms, we hit up Powerhouse Products for the correct spring-compressing tool. It makes the job much easier.
Our 406 test bed runs Dart...
Our 406 test bed runs Dart Pro 1 CNC heads and an Edelbrock Victor Jr. port-matched manifold. A call to Fel-Pro yielded the appropriate PN1206 intake gaskets.
Dyno Chart Details
|DYNO DETAILS |
|HEADERS: ||131/44-inch Hedman long-tubes |
|FUEL: ||91-octane unleaded |
|ADVANCE: ||37 degrees |
|INTAKE MANIFOLD: ||Edelbrock Victor Jr.,port-matched |
|CARBURETOR: ||825-cfm Mighty Demon |
|JETTING: ||83 primaries/87 secondaries |
|MAX TORQUE: ||529.6 lb-ft at 4,900 rpm |
|MAX POWER: ||574.2 hp at 6,500 rpm |
|AVERAGE TORQUE: ||476.5 lb-ft |
|AVERAGE POWER: ||434.1 hp |