BASELINE
PEAK TORQUE 581
AVG. TORQUE 555
PEAK HP 651
AVG. HP 574
FINAL PULL
PEAK TORQUE 585
AVG. TORQUE 562
PEAK HP 672
AVG. HP 581
496 BUILD SPECS
Bore x stroke 4.310x4.250
Displacement 496 ci
Head gasket thickness 0.041
Piston deck height 0.005
Total clearance 0.046
Compression ratio 11:1
Piston-to-wall clearance 0.004
Ring endgaps 0.022, 0.024
Rod bearing clearance 0.0027
Main bearing clearance 0.0027
Crank endplay 0.007
Main bearing cap torque 105 ft-lb (w/moly-lube)
Rod bolt torque 63 ft-lb (w/moly-lube)
Head bolt torque 65/75 ft-lb (w/moly-lube)
* Except as noted, all dimensions are in inches.