2008 mustang 4.6 v8

2008 Mustang Engine Information & Specs – 281 Modular V8 (4.6 L)

Modular 4.6L SOHC V8 Technical Specs & Data

2008 Mustang Engine Information – 281 cubic inch V-8 (4.6 L Ford Modular V8)

Ford’s Modular 4.6L SOHC V8

The 4.6 Liter (281 ci) engine used from 2005 to 2010 is a Single Overhead Cam (SOHC) engine using 3 valves per cylinder.Previously this engine had been reserved for the Mach 1 and Cobra style cars. The 4.6L engine runs on 87 octane fuel and is rated at 300 horsepower at 5750 rpm and 320 foot pounds of torque at 4500 rpm. The torque chart can be used for all similar 4.6 engines from 2005 to 2010.

Year 2008
VIN Code H
Cylinders 8
Displacement 281 cu / 4.6 liters
Power (hp) 300 hp @ 5,750 RPM
Torque (lb/ft) 320 lb/ft @ 4,500 RPM
Compression 9.8:1
Type 3V

 

Year 2008
VIN Code S
Cylinders 8
Displacement 281 cu / 4.6 liters
Power (hp) 319 hp @ 5,750 RPM
Torque (lb/ft) 330 lb/ft @ 4,500 RPM
Compression 9.8:1
Type 3V

Engine Specs

Spark Plugs PZT1F, Set gap to 0.040 – 0.5. inch torque to 25lbs
Valve arrangement Per cylinder is 2 intake and 1 exhaust
Fuel 87 octane
Compression 9.8 : 1
HP and Torque Horsepower 300 @ 5750 rpm / Torque 320 [email protected] rpm
Taxable HP
Firing order 1-3-7-2-6-5-4-8
Lobe lift intake and exhaust 0.217
Allowable lobe lift loss 0.005
Endplay 0.0002 to 0.0090
Journal diameter 1.126 – 1.127
Bearing inside diameter 1.128 – 1.129
Journal to bearing oil clearance 0.001 to 0.003 (0.002 inch maximum)
Oil 6 quarts of SAE 5W20
Antifreeze 13.6 quarts – use yellow colored only DO NOT MIX COLORS!

Engine Torque Specifications

All torque specifications provided in this table are those recommended by FORD. If you use special bolts, follow the torque specifications provided by the manufacturer. I recommend that you use the 3 step torque technique where you torque down the bolts in three equal steps. Once you have reached the maximum recommended torque setting, go around one more time. Do not torque in a circular pattern. Always torque cross to cross or pattern specified by FORD. Many specs are given in inch pounds. 12 inch pounds is equal to 1 foot pound. The use of a inch pound torque wrench is desirable because it is more accurate at most lower settings.

Flywheel/ drive plate bolts 59
Flywheel driveplate bolts In 2 steps; 10 lbs, then 52 lbs
Front jackshaft sprocket bolts
Step 1 = 33 lbs, step 2 + 90 degrees
Rear jackshaft sprocket bolts
Step 1 = 15 lbs, step 2 + 90 degrees
Jackshaft chain tensioner bolts 80 inch lbs
Jackshaft chain guide bolts 168 inch lbs
Jackshaft thrust plate bolts 90 inch lbs
Engine mount nuts 46
Engine mount bracket to engine block bolts 41
Engine mount to chassis 41
Upper cam gear bolt
Subframe mounting bolts 85 lbs
Crank cap bolts
Valve cover bolts 89 in lbs
Accessory brackets 35
oil pan bolts 18 in lb, 15 lbs, + 60 degrees
Oil filter adaptor bolts 18 lbs
Oil pump to engine block 89 inch lbs
Oil pickup screen to to engine block bolt 18 lbs
Ol pickup tube to oil pump bolts 89 inch lbs
rear main seal retainer 89 inch lbs
timing chain cover bolts
15 lbs, then an additional 90 degrees
timing chain stationary guide bolts 89 inch lbs
Timing chain tensioner bolts 18 lbs
valve cover bolts 89 inch lbs
crankshaft pulley bolt
66, step Loosen 1 turn, step 3 = 37 lbs, step 4 = tighten an additional 90 degrees

 

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