Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSDODGE AND RAM2023CHARGER SXT, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 2 (6.4L ENGINE (SERVICE INFORMATION))TECHNICAL SPECIFICATIONSENGINE SPECIFICATIONS
2023 Dodge and Ram Charger SXT, 4WD
Engine Specifications
2023 Dodge and Ram Charger SXT, 4WDSECTION Engine Specifications
WARNING: This page is about a different variant/trim than selected.
GENERAL DESCRIPTION
| DESCRIPTION | SPECIFICATION |
|---|---|
| Engine Type | 90° 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
| DESCRIPTION | SPECIFICATION | |
|---|---|---|
| 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. |
PISTONS
| DESCRIPTION | SPECIFICATION | |
|---|---|---|
| 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 | 95.23 - 95.73 mm | 3.7492 - 3.7689 in. |
| Groove #2 | 93.53 - 94.03 mm | 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 | 1.24 mm | 0.0488 in |
| No. 2 | 1.24 mm | 0.0488 in |
| No. 3 | 2.04 mm | 0.0803 in. |
PISTON RINGS
| DESCRIPTION | SPECIFICATION | |
|---|---|---|
| Metric | Standard | |
| Ring Gap | ||
| Top Compression Ring | 0.35 - 0.50 mm | 0.0138 - 0.0197 in. |
| Second Compression Ring | 0.35 - 0.60 mm | 0.0137 - 0.0236 in. |
| Oil Control (Steel Rails) | 0.20 - 0.71 mm | 0.0079 - 0.028 in. |
| Side Clearance | ||
| Top Compression Ring | 0.02 - 0.068 mm | 0.0007 - 0.0026 in. |
| Second Compression Ring | 0.02 - 0.058 mm | 0.0007 - 0.0022 in. |
| Oil Ring (Steel Ring) | 0.019 - 0.229 mm | 0.0007 - 0.0091 in. |
| Ring Width | ||
| Top Compression Ring | 1.172 - 1.190 mm | 0.0461 - 0.0469 in. |
| Second Compression Ring | 1.472 - 1.490 mm | 0.0579 - 0.0586 in. |
| Oil Ring (Steel Rails) | 0.447 - 0.473 mm | 0.0175 - 0.0186 in. |
CONNECTING RODS
| DESCRIPTION | SPECIFICATION | |
|---|---|---|
| Metric | Standard | |
| Side Clearance | 0.10 - 0.35 mm | 0.003 - 0.0137 in. |
CRANKSHAFT
| DESCRIPTION | SPECIFICATION | |
|---|---|---|
| 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
| DESCRIPTION | SPECIFICATION | |
|---|---|---|
| Metric | Standard | |
| Bearing Journal Diameter | ||
| No. 1 | 61.67 mm | 2.4280 in. |
| No. 2 | 57.79 mm | 2.2752 in. |
| No. 3 | 57.39 mm | 2.2594 in. |
| No. 4 | 56.99 mm | 2.2437 in. |
| No. 5 | 43.62 mm | 1.7174 in. |
| Bearing To Journal Clearance Standard | ||
| No. 1 | 0.030 - 0.070 mm | 0.0012 - 0.0028 in. |
| No. 2 | 0.050 -0.090 mm | 0.0019 - 0.0035 in. |
| No. 3 | 0.040 - 0.080 mm | 0.0015 - 0.003 in. |
| No. 4 | 0.050 - 0.090 mm | 0.0019 - 0.0035 in. |
| No. 5 | 0.040 - 0.080 mm | 0.0015 - 0.003 in. |
| Camshaft End Play | .080 - 0.290 mm | 0.0031 - 0.0114 in. |
| Duration | 288.0° | |
| Valve Lift (@ Zero Lash) | ||
| Intake | 15.0 mm | 0.591 in. |
| Exhaust | 14.2 mm | 0.559 in. |
VALVE TIMING
| DESCRIPTION | SPECIFICATION |
|---|---|
| Intake | |
| Opens (BTDC) | 36.0° |
| Closes (ATDC) | 250.0° |
| Duration | 286.0° |
| Exhaust | |
| Opens (BTDC) | 278° |
| Closes (ATDC) | 10° |
| Valve Overlap | 46° |
CYLINDER HEAD
| DESCRIPTION | SPECIFICATION | |
|---|---|---|
| Metric | Standard | |
| Valve Seat Angle | 44.5° - 45.0° | |
| Valve Guide Runout (MAX) | 0.04 mm | 0.0016 in. |
| Valve Seat Width | ||
| Intake | 0.94 - 1.04 mm | 0.037 - 0.041 in. |
| Exhaust | 1.16 - 1.26 mm | 0.046 - 0.050 in. |
| Guide Bore Diameter | ||
| Intake | 7.975 - 7.997 mm | 0.314 - 0.315 in. |
| Exhaust | 7.975 - 7.990 mm | 0.314 - 0.315 in. |
HYDRAULIC TAPPETS
| DESCRIPTION | SPECIFICATION | |
|---|---|---|
| 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
| DESCRIPTION | SPECIFICATION | |
|---|---|---|
| Metric | Standard | |
| Face Angle | ||
| Intake | 45.5° - 46.0° | |
| Exhaust | 45.0° - 45.5° | |
| Head Diameter | ||
| Intake | 54.3 mm | 2.138 |
| Exhaust | 42.0 mm | 1.654 |
| Length (Overall From Gage Line) | ||
| Intake | 128.56 | 5.0614 in. |
| Exhaust | 127.17 | 5.0067 in. |
| Stem Diameter | ||
| Intake | 7.934 - 7.954 mm | 0.312 - 0.313 in. |
| Exhaust | 7.930 - 7.950 mm | 0.312 - 0.313 in. |
| Stem - to - Guide Clearance | ||
| Intake | 0.021 - 0.063 mm | 0.0008 - 0.0025 in. |
| Exhaust | 0.025 - 0.067 mm | 0.0010 - 0.0026 in. |
VALVE SPRING
| DESCRIPTION | SPECIFICATION | |
|---|---|---|
| Metric | Standard | |
| Spring Force (Valve Closed) | ||
| Intake | 510.0 N ± 26.0 N @ 52.1 mm | 114.7 lbs. ± 5.8 lbs. @ 2.051 in. |
| Exhaust | 510.0 N ± 26.0 N @ 52.1 mm | 114.7 lbs. ± 5.8 lbs. @ 2.051 in. |
| Spring Force (Valve Open) | ||
| Intake | 1500.0 N ± 70.0 N @ 37.6 mm | 337.2 lbs. ± 15.7 lbs. @ 1.480 in. |
| Exhaust | 1500.0 N ± 70.0 N @ 37.6 mm | 337.2 lbs. ± 15.7 lbs. @ 1.480 in. |
| Free Length (approximately) | ||
| Intake | 63.9 mm | 2.516 in. |
| Exhaust | 63.9 mm | 2.516 in. |
| Number of Coils | ||
| Intake | 8.55 | |
| Exhaust | 8.55 | |
| Wire Diameter | ||
| Intake and Exhaust | 5.65 - 4.51 mm | 0.222 - 0.178 in. |
| Installed Height (Spring Seat to Bottom of Retainer) | ||
| Intake | 52.1 mm | 2.051 in. |
| Exhaust | 51.2 mm | 2.016 in. |
OIL PUMP
| DESCRIPTION | SPECIFICATION | |
|---|---|---|
| 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
| SPECIFICATION | SPECIFICATION |
|---|---|
| At Curb Idle Speed (min.)* | 25 kPa (4 psi) |
| @ 3000 rpm | 170 - 758 kPa (25 - 110 psi) |
| * CAUTION: If pressure is zero at curb idle, DO NOT run engine | |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.