General
| 4.0L SOHC | Displacement | 244 cubic inch | |
| Number of cylinders | 6 | ||
| Bore | 3.953 inch | ||
| Stroke | 3.31 inch | ||
| Firing order | 1-4-2-5-3-6 | ||
| Minimum oil pressure at 2,000 rpm engine at normal operating temperature | 15 psi | ||
| Cylinder Head and Valve Train | Valve guide bore diameter | 0.276 inch | |
| Combustion Chamber Volume | 65.197 +/- 2.068 - 2.018 inch | ||
| Valve Arrangement Front To Rear | LH | I-E-I-E-I-E | |
| RH | E-I-E-I-E-I | ||
| Gasket Surface Flatness | 0.003 inch Total | ||
| Valve Seat | Width exhaust | 0.06 - 0.094 inch | |
| Width intake | 0.05 - 0.083 inch | ||
| Angle | 45° | ||
| Runout TIR maximum | 0.002 inch | ||
| Valves | Valve Stem Diameter Intake | 0.274 - 0.275 inch | |
| Valve Stem Diameter Exhaust | 0.274 inch | ||
| Valve Stem To Guide Clearance Exhaust | 0.001 - 0.003 inch | ||
| Valve Stem To Guide Clearance Intake | 0.001 - 0.002 inch | ||
| Head Diameter Intake | 1.807 - 1.815 inch | ||
| Head Diameter Exhaust | 1.531 - 1.539 inch | ||
| Valve Face Angle | 45° | ||
| Valve Face Runout Limit | 0.001 inch | ||
| Valve Springs | Intake Valve Spring Compression Pressure At Specified Height | 202.84 - 224.968 ft. lbs. at 1.413 - 1.445 inch | |
| Exhaust Valve Spring Compression Pressure At Specified Height (lbs) | 202.84 - 224.968 ft. lbs. at 1.413 - 1.445 inch | ||
| Intake Valve Spring Free Length | 1.7 inch | ||
| Exhaust Valve Spring Free length | 1.7 inch | ||
| Intake Valve Spring Assembled Height | 1.569 - 1.601 inch | ||
| Exhaust Valve Spring Assemble Height | 1.569 - 1.601 inch | ||
| Camshaft | Intake Lobe Lift | 0.259 inch | |
| End play | 0.0003 - 0.007 inch | ||
| Exhaust Lobe Lift | 0.259 inch | ||
| Maximum Allowable Lobe Lift Loss | 0.005 inch | ||
| Journal To Bearing Clearance Tighten camshaft bearing cap bolts to (11 ft. lbs.) when measuring journal clearance. | 0.002 - 0.004 inch | ||
| Journal to Bearing Clearance Tighten camshaft bearing cap bolts to (11 ft. lbs.) when measuring journal clearance. | Service limit | 0.006 inch | |
| Camshaft Drive | Journal Diameter | 1.099 - 1.101 inch | |
| Bearing Inside Diameter all | 1.102 - 1.104 inch | ||
| Maximum Camshaft Journal Runout | 0.002 inch | ||
| Cylinder Block Cylinder Bore Diameter | 3.953 inch | ||
| Maximum Cylinder Out-Of-Round | 0.001 inch | ||
| Maximum Cylinder Taper | 0.001 inch | ||
| Main Bearing Bore Diameter | 2.387 - 2.387 inch | ||
| Crankshaft To Rear Face Of Block Runout TIR Maximum | 0.005 inch | ||
| Distributor Shaft Bearing Bore Diameter | 2.852 - 2.853 inch | ||
| Head Gasket Surface Flatness | 0.004 inch overall | ||
| Head Gasket Surface Finish | 60 - 150 RMS | ||
| Crankshaft and Flywheel | Main Bearing Journal Diameter | 2.243 - 2.244 inch | |
| Main Bearing Journal Runout Limit | 0.002 inch | ||
| Main Bearing Journal Taper Maximum Per Inch | 0.0003 inch | ||
| Connecting Rod Journal Maximum out-of-round | 0.0003 inch | ||
| Crankshaft Free End Play | 0.002 - 0.0126 inch | ||
| Main Bearing Journal Out-Of-Round | 0.0003 inch | ||
| Main Bearing Journal Runout TIR Maximum | 0.002 inch | ||
| Main Bearing Journal Runout Service Limit | 0.005 inch | ||
| Main Bearing Thrust Face Runout TIR maximum | 0.010 inch | ||
| Thrust Bearing Journal Length | 1.039 - 1.041 inch | ||
| Main And Rod Bearing Journal Finish Maximum | 72 and 88 RMS | ||
| Main Bearing Thrust Face Finish Maximum | 20 RMS | ||
| Connecting Rod Journal Diameter | 2.125 - 2.126 inch | ||
| Connecting Rod Journal Taper Per Inch Maximum | 0.0003 inch | ||
| Clearance To Crankshaft Desired | 0.0003 - 0.0024 inch | ||
| Connecting Rod Bearings | Clearance To Crankshaft Allowable | 0.0005 - 0.002 inch | |
| Bearing wall thickness | 0.0551 - 0.0554 inch | ||
| Main Bearings | Clearance To Crankshaft | 0.0008 - 0.0015 inch | |
| Clearance To Crankshaft Allowable | 0.0005 - 0.002 inch | ||
| Bearing Wall Thickness | 0.0709 - 0.0711 inch | ||
| Connecting Rod, Piston and Rings | Side clearance (assembled to crankshaft) | 0.0036 - 0.0106 inch | |
| Piston Pin Bore Or Bushing I.D. | 0.943 - 0.944 inch | ||
| Rod Bearing Bore I.D. | 2.237 inch | ||
| Rod Bearing Bore Out-Of-Round | 0.0004 inch | ||
| Rod Length Center To Center | 5.746 - 5.749 inch | ||
| Alignment (Bore-To-Bore Max. Diff.) Twist | 0.0015 inch per 1.000 inch | ||
| Alignment (bore-to-bore max. diff.) bend | 0.00049 inch per 1.000 inch | ||
| Piston Pin | Length | 2.835 - 2.866 inch | |
| Diameter (red) | 0.93446 - 0.9447 inch | ||
| Diameter (blue) | 0.3447 - 0.9449 inch | ||
| To Piston Pin Bore Clearance | 0.0004 - 0.0006 inch | ||
| To Connecting Rod Bushing Clearance | -0.0007 to -0.0017 inch Press Fit | ||
| Piston | Bore Clearance Selective Fit | 0.0012 - 0.002 inch | |
| Diameter-coded STD | 3.952 - 3.9528 inch | ||
| Diameter-coded 0.5 | 3.972 inch | ||
| Diameter-coded 1.0 | 3.990 - 3.991 inch | ||
| Pin Bore Diameter (red) | 0.945 inch | ||
| Pin Bore Diameter (blue) | 0.945 inch | ||
| Top Ring Groove Width | 0.0645 - 0.0654 inch | ||
| Bottom Ring Groove Width | 0.0705 - 0.0713 inch | ||
| Oil Ring Groove Width | 0.1378 - 0.1399 inch | ||
| Piston Rings | Top Compression Ring Width | 0.062 - 0.063 inch | |
| Bottom Compression Ring Width | 0.068 - 0.069 inch | ||
| Top Compression Side Clearance | 0.002 - 0.0003 inch | ||
| Bottom Compression Side | 0.002 - 0.003 inch | ||
| Top Compression Ring Gap | 0.008 - 0.018 inch | ||
| Bottom Compression Ring Gap | 0.018 - 0.028 inch | ||
| Lubrication System | Relief Valve Spring Pressure lbs. at 1.39 inch | 45.100 - 48.730 ft. lbs. | |
| Driveshaft To Housing Clearance | 0.0007-0.0012 inch | ||
| Relief Valve To Housing Clearance | 0.0007 - 0.0012 inch | ||
| Rotor Assembly End Clearance Max. | 0.0006 - 0.0017 inch | ||
| Outer Race To End Clearance | 0.0002 - 0.0004 inch | ||
| Engine Oil Capacity | 4 quarts with filter |