ENGINE DATA
Engine 3.7L V6 Engine 5.0L V8 Engine
Cubic inches 227 302
Required fuel 87 octane 87 octane
Firing order 1-4-2-5-3-6 1-5-4-8-6-3-7-2
Ignition system Coil on plug Coil on plug
Spark plug gap 0.049–0.053 inch
(1.25-1.35 mm)
0.049–0.053 inch
(1.25–1.35 mm)
Compression ratio 10.5:1 11.0:1
For Shelby GT500 octane requirements, see the Shelby GT500
Supplement.
Engine drivebelt routing
1. Short drivebelt is on first pulley groove closest to engine.
2. Long drivebelt is on second pulley groove farthest from engine.
• 3.7L V6 engine
1 2
Maintenance and Specifications
308
2011 05+ Mustang (197)
Owners Guide, 2nd Printing
USA (fus)
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