what is the compression ratio on my 98 4.6.. stock motor..

 

Engine Type 4.2L V-6 4.6L Triton V-8 5.4L Triton V-8
Drivetrain Layout Rear or 4-wheel drive Rear or 4-wheel drive Rear or 4-wheel drive
Valvetrain OHV, 2 Valves per cylinder SOHC, 2 Valves per cylinder SOHC, 2 Valves per cylinder
Bore/Stroke (in.) 3.81 x 3.74 3.55 x 3.54 3.55 x 4.16
Displacement 256 (4196) 281 (4606) 330 (5409)
cu. in. (cc)
Compression Ratio 9.2:1 9.3:1 9.0:1
Horsepower @ rpm 202 @4800 231 @ 4750 260 @ 4500
Torgue (lb.-ft.) @ rpm 252 @ 3400 293 @ 3500 350 @ 2500
Recommended Fuel 87 octane (minimum) 87 octane (minimum) 87 octane (minimum)
Fuel System Sequential multi-port electronic fuel injection (SEFI) Sequential multi-port electronic fuel injection (SEFI) Sequential multi-port electronic fuel injection (SEFI)
Oil Capacity 6 6 6
with Filter (quarts)
Transmission 5-speed
manual
overdrive 4-speed
automatic
overdrive 5-speed
manual
overdrive 4-speed
automatic
overdrive 4-speed
automatic
overdrive 4-speed
automatic
overdrive
(R2) (4R70W) (R2) (4R70W) (4R70W) (4R100)
Gear Ratios 1st 3.90:1 2.84:1 3.90:1 2.84:1 2.84:1 2.71:1
2nd 2.25:1 1.55:1 2.25:1 1.55:1 1.55:1 1.54:1
3rd 1.49:1 1.00:1 1.49:1 1.00:1 1.00:1 1.00:1
4th 1.00:1 0.70:1(OD) 1.00:1 0.70:1(OD) 0.70:1(OD) 0.71:1
5th 0.80:1(OD) - 0.80:1(OD) - - -
Reverse 3.41:1 2.33:1 3.41:1 2.33:1 2.33:1 2.18:1
Converter - 2.30:1 - 2.30:1 1.90:1 2.20:1

 

^^^^that came out funny..its 9:3:1 on a 4.6L

 

cool thanx