X-11 '81 Factor: New Hotness!

ITEM	SPECIFICATION
Bore	92mm (3.623")
Stroke	92mm (3.623")
Piston displacement	4.9 Liter (300 cu. in.)
Compression ratio	9.5:1
Compression pressure at cranking speed (throttle open)	140-165 psi
Horsepower	200 HP @ 4400 rpm
Torque	275 lb.ft. @ 3000 rpm
Valves
Face angle	45 deg
seat angle	45 deg
Head diameter - Intake	45mm (1.77")
Head diameter - Exhaust	38mm (1.50")
Rocker arm ratio	1.60:1
Valve Springs
Free length	49.5mm
Pounds required to compress to 44mm (1.73")(valve closed)	68-76
Pounds required to compress to 34.3mm (1.35")(valve open)	214-232
Camshaft Timing (with ramp @ .004" lift)
Intake opens	21 deg BTDC
Intake closes	257 deg ATDC
Exhaust opens	245 deg BTDC
Exhaust closes	29 deg ATDC
Intake lift (at valve)	9.75mm (.384")
Exhaust lift (at valve)	10.06mm (.396")
Intake duration	278 deg
Exhaust duration	274 deg
Overlap	49 deg