I am trying to create a model for the 292 in Engine Analyzer. I have hit a couple of snags with getting all the specs right for the 292. Perhaps the most difficult is specifying the intake ports which are shared. My best guess right now is to take the area of the port and divide it in two for the intake port area.
The intake and exhaust manifold port lengths are also problematic in that they are much longer for the outboard cylinders. I don't have great numbers for either the intake or exhaust port area or port length for either the manifolds or head.
If you can, help me fill in some of the blanks. Thanks, Cris
Here's what I am using for specifications. I've culled these from manuals, forums, and (a big help) Tom's website 12bolt.com:
Stock 292 Engine Specifications:
Bore: 3.75”
Stroke: 4.125”
Deck Height: 10.875”
Rod Length: 6.76”
Piston Pin Height: 2.01”
Head cc’s: 74
Piston cc’s: -30
Gasket Thickness: .04”
Calculated Compression Ratio: 7.6:1
Head Intake Valve: 1.72”
Head Exhaust Valve: 1.5”
Head Intake Port Length: ????
Head Intake Port Diameter: ????
Head Intake Port Volume: ????
Head Intake Flow Numbers:
..05” 27.3CFM
.1” 52CFM
.2” 103CFM
.3” 149.5CFM
.4” 164.6CFM
.5” 168.5CFM
Head Exhaust Flow Numbers:
.1” 49.7CFM ????
.2” 93.1CFM ????
.3” 125.2CFM ????
.4” 147.2CFM ????
.5” 163.7CFM ????
Carburetor CFM (Assume Rochester Model B): ????
Intake Manifold Runner Diameter: ????
Intake Manifold Runner Length: ????
Exhaust Manifold Runner Diameter: ????
Exhaust Manifold Runner Length: ????
Cam Specs:
LSA 111 Degrees
Intake Duration 188 Degrees @ .05”
Exhaust Duration 188 Degrees @ .05”
Gross Valve Lift: .399”
