2006 Toyota Tundra Owners Manual - Page 486

'06 TUNDRA_U (L/O 0508) Engine Model: 1GR−FE and 2UZ−FE Type: 1GR−FE engine 6 cylinder V type, 4 cycle, gasoline 2UZ−FE engine 8 cylinder V type, 4 cycle, gasoline Bore and stroke, mm (in.): 1GR−FE engine 94.0 95.0 (3.70 3.74) 2UZ−FE engine 94.0 84.0 (3.70 3.31) Displacement, cm3 (cu. in.): 1GR−FE engine 2UZ−FE engine 3956 (241.4) 4664 (284.5) Fuel Fuel type: 4.0 L V6 (1GR−FE) engine Unleaded gasoline, Octane Rating 87 (Research Octane Number 91) or higher. For improved vehicle performance, use premium unleaded gasoline with an Octane Rating of 91 (Research Octane Number 96) or higher. 4.7 L V8 (2UZ−FE) engine Unleaded gasoline, Octane Rating 87 (Research Octane Number 91) or higher Fuel tank capacity, L (gal., Imp. gal.): 100 (26.4, 22.0) Service specifications ENGINE Valve clearance (engine cold), mm (in.): 4.0 L V6 (1GR−FE) engine Intake 0.15-0.25 (0.006-0.010) Exhaust 0.29-0.39 (0.011-0.015) 4.7 L V8 (2UZ−FE) engine Intake 0.15-0.25 (0.006-0.010) Exhaust 0.25-0.35 (0.010-0.014) Spark plug type: 4.0 L V6 (1GR−FE) engine DENSO K20HR−U11 NGK LFR6C11 4.7 L V8 (2UZ−FE) engine DENSO KS20R11 NGK IFR6A11 Spark plug gap, mm (in.): 1.1 (0.043) 486 2006 TUNDRA from Oct. '06 Prod. (OM34458U)