2015 Dodge Challenger 6.4L HEMI SRT Engine Specifications

The 2015 Dodge Challenger 6.4 L V8 HEMI SRT engine specifications.

General Engine Description

This description is a precisely identifies the factory specifications for the 6.4L V8 SRT 392 cubic inch 2015-2016 Dodge Challenger HEMI engine.

DESCRIPTION	SPECIFICATION
Horsepower	485 hp @ 6100 rpm
Torque	475 lb-ft @ 4200 rpm
Engine Type	90Ā° V-8 OHV
Displacement	6.4 Liters 392 (Cubic Inches)
Bore	103.9 mm (4.09 in.)
Stroke	94.6 mm (3.72 in.)
Compression Ratio	10.9:1
Firing Order	1-8-4-3-6-5-7-2
Lubrication	Pressure Feed - Full Flow Filtration
Cooling System	Liquid Cooled - Forced Circulation
Cylinder Block	Cast Iron
Cylinder Head	Aluminum
Crankshaft	Forged Steel
Camshaft	Cast Iron
Pistons	Aluminum Alloy
Connecting Rods	Powdered Metal

Cylinder Block Specifications

DESCRIPTION	METRIC	Standard
Cam Bore 1 Diameter	61.72 mm	2.4300 in.
Cam Bore 2 Diameter	57.86 mm	2.2780 in.
Cam Bore 3 Diameter	57.45 mm	2.2618 in.
Cam Bore 4 Diameter	57.06 mm	2.2465 in.
Cam Bore 5 Diameter	43.683 mm	1.7198 in.
Cylinder Bore Diameter	103.9 mm	4.09 in.
Out of Round (MAX)	0.008 mm	0.0003 in.
Taper (MAX)	0.0127 mm	0.0005 in.
Lifter Bore Diameter	21.45 - 21.425 mm	0.8444 - 0.8435 in.

Piston Specifications

DESCRIPTION	METRIC	STANDARD
Clearance Measured at 38.0 mm (1.5 in.) Below Deck	0.0245 - 0.0515 mm	0.00096 - 0.0020 in.
Ring Groove Diameter Groove #1 Groove #2	- 95.23 - 95.73 mm 93.53 - 94.03 mm	- 3.7492 - 3.7689 in. 3.6823 - 3.7020 in.
Weight	450 grams	15.87 oz.
Piston Length	54.70 - 55.30 mm	2.153 - 2.177 in.
Ring Groove Width No. 1 No. 2 No. 3	- 1.24 mm 1.24 mm 2.04 mm	- 0.0488 in. 0.0488 in. 0.0803 in.

Piston Rings Specifications

DESCRIPTION	METRIC	STANDARD
Ring Gap Top Compression Ring Second Compression Ring Oil Control (Steel Rails)	- 0.35 - 0.50 mm 0.35 - 0.60 mm 0.20 - 0.71 mm	- 0.0138 - 0.0197 in. 0.0137 - 0.0236 in. 0.0079 - 0.028 in.
Side Clearance Top Compression Ring Second Compression Ring Oil Ring (Steel Ring)	- 0.02 - 0.068 mm 0.02 - 0.058 mm 0.019 - 0.229 mm	- 0.0007 - 0.0026 in. 0.0007 - 0.0022 in. 0.0007 - 0.0091 in.
Ring Width Top Compression Ring Second Compression Ring Oil Ring (Steel Rails)	- 1.172 - 1.190 mm 1.472 - 1.490 mm 0.447 - 0.473 mm	- 0.0461 - 0.0469 in. 0.0579 - 0.0586 in. 0.0175 - 0.0186 in.

Connecting Rod Specifications

DESCRIPTION	METRIC	STANDARD
Side Clearance	0.10 - 0.35 mm	0.003 - 0.0137 in.

Crankshaft Specifications

DESCRIPTION	METRIC	STANDARD
Main Bearing Journal Diameter	65 mm	2.6 in.
Main Bearing Clearance	0.013 - 0.041 mm	0.0005 - 0.0016 in.
Out of Round (MAX)	0.005 mm	0.0002 in.
Taper (MAX)	0.003 mm	0.0001 in.
End Play	0.052 - 0.282 mm	0.002 - 0.011 in.
End Play (MAX)	0.282 mm	0.011 in.
Connecting Rod Journal Diameter	54.00 mm	2.126 in
Rod Bearing Clearance	0.041 - 0.066 mm	0.0016 - 0.0026 in.
Out of Round (MAX)	0.005 mm	0.0002 in.
Taper (MAX)	0.003 mm	0.0001 in.

Camshaft Specifications

DESCRIPTION	METRIC	STANDARD
Bearing Journal Diameter No. 1 No. 2 No. 3 No. 4 No. 5	- 61.67 mm 57.79 mm 57.39 mm 56.99 mm 43.62 mm	- 2.4280 in. 2.2752 in. 2.2594 in. 2.2437 in. 1.7174 in.
Bearing To Journal Clearance Standard No. 1 No. 2 No. 3 No. 4 No. 5	- 0.030 - 0.070 mm 0.050 -0.090 mm 0.040 - 0.080 mm 0.050 - 0.090 mm 0.040 - 0.080 mm	- 0.0012 - 0.0028 in. 0.0019 - 0.0035 in. 0.0015 - 0.003 in. 0.0019 - 0.0035 in. 0.0015 - 0.003 in.
Camshaft End Play	.080 - 0.290 mm	0.0031 - 0.0114 in.
Duration	288.0Ā°	288.0Ā°
Valve Lift (@ Zero Lash) Intake Exhaust	- 15.0 mm 14.2 mm	- 0.591 in. 0.559 in.

Valve Timing Specifications

DESCRIPTION	SPECIFICATION
Intake Opens (BTDC) Closes (ATDC) Duration	- 36.0Ā° 250.0Ā° 286.0Ā°
Exhaust Opens (BTDC) Closes (ATDC)	- 278Ā° 10Ā°
Valve Overlap	46Ā°

Cylinder Head Specifications

DESCRIPTION	METRIC	STANDARD
Valve Seat Angle	44.5Ā° - 45.0Ā°	44.5Ā° - 45.0Ā°
Valve Guide Runout (MAX)	0.04 mm	0.0016 in.
Valve Seat Width Intake Exhaust	- 0.94 - 1.04 mm 1.16 - 1.26 mm	- 0.037 - 0.041 in. 0.046 - 0.050 in.
Guide Bore Diameter Intake Exhaust	- 7.975 - 7.997 mm 7.975 - 7.990 mm	- 0.314 - 0.315 in. 0.314 - 0.315 in.

Hydraulic Tappets Specifications

DESCRIPTION	METRIC	STANDARD
Body Diameter	21.387 - 21.405 mm	0.8420 - 0.8427 in.
Clearance (To Bore)	0.020 - 0.063 mm	0.0007 - 0.0024 in.
Dry Lash (at the valve)	3.0 mm	0.1181 in.

Valves Specifications

DESCRIPTION	METRIC	STANDARD
Face Angle Intake Exhaust	- 45.5Ā° - 46.0Ā° 45.0Ā° - 45.5Ā°	- 45.5Ā° - 46.0Ā° 45.0Ā° - 45.5Ā°
Head Diameter Intake Exhaust	- 54.3 mm 42.0 mm	- 2.138 1.654
Length (Overall From Gage Line) Intake Exhaust	- 128.56 mm 127.17 mm	- 5.0614 in. 5.0067 in.
Stem Diameter Intake Exhaust	- 7.934 - 7.954 mm 7.930 - 7.950 mm	- 0.312 - 0.313 in. 0.312 - 0.313 in.
Stem - to - Guide Clearance Intake Exhaust	- 0.021 - 0.063 mm 0.025 - 0.067 mm	- 0.0008 - 0.0025 in. 0.0010 - 0.0026 in.

Valve Spring Specifications

DESCRIPTION	METRIC	STANDARD
Spring Force (Valve Closed) Intake Exhaust	- 510.0 N Ā± 26.0 N @ 52.1 mm 510.0 N Ā± 26.0 N @ 52.1 mm	- 114.7 lbs. Ā± 5.8 lbs. @ 2.051 in. 114.7 lbs. Ā± 5.8 lbs. @ 2.051 in.
Spring Force (Valve Open) Intake Exhaust	- 1500.0 N Ā± 70.0 N @ 37.6 mm 1500.0 N Ā± 70.0 N @ 37.6 mm	- 337.2 lbs. Ā± 15.7 lbs. @ 1.480 in. 337.2 lbs. Ā± 15.7 lbs. @ 1.480 in.
Free Length (approx.) Intake Exhaust	- 63.9 mm 63.9 mm	- 2.516 in. 2.516 in.
Number of Coils Intake Exhaust	- 8.55 8.55	- 8.55 8.55
Wire Diameter Intake and Exhaust	- 5.65 X 4.51 mm	- 0.222 - 0.178 in.
Installed Height (Spring Seat to Bottom of Retainer) Intake Exhaust	- 52.1 mm 51.2 mm	- 2.051 in. 2.016 in.

Oil Pump Specifications

DESCRIPTION	METRIC	STANDARD
Clearance Over Rotors (MAX)	0.095 mm	0.0038 in.
Outer Rotor to Pump Body Clearance (MAX)	0.235 mm	0.009 in.
Tip Clearance Between Rotors (MAX)	0.150 mm	0.006 in.

Oil Pressure Specifications

*CAUTION: If oil pressure is zero at curb idle, DO NOT run engine.

Specification	Specification
At Curb Idle Speed (min.)*	25 kPa (4 psi)
@ 3000 RPM	170 - 758 kPa (25 - 110 psi)