General
| Displacement | 3.0L | ||
| Number of cylinders | 6 | ||
| Bore | 3.50 inch | ||
| Stroke | 3.14 inch | ||
| Firing order | 1-4-2-5-3-6 | ||
| Oil pressure (Hot 2500 rpm) | 40-60 psi | ||
| Cylinder head and valve train | Combustion chamber volume | 2.874 cu in. | |
| Valve guide bore diameter | Intake and Exhaust | 0.2772 - 0.2763 inch | |
| Valve seats | Width-Intake | 0.06-0.08 inch | |
| Width-Exhaust | 0.08-0.10 in. | ||
| Angle | 45° | ||
| Runout (T.I.R.) | 0.003-0.004 in. | ||
| Bore diameter insert counterbore diameter | Intake | 1.8542 in. MAX | |
| 1.8532 in. MIN | |||
| Exhaust | 1.5645 in. MAX | ||
| Gasket surface flatness | 0.003 in. over 6.00 in. | ||
| Valve stem to guide clearance | Intake | 0.001-0.0028 inch | |
| Exhaust | 0.0015-0.0033 inch | ||
| Valve head diameter | Intake | 1.57 inch | |
| Exhaust | 1.30 inch | ||
| Valve face runout limit | 0.002 in. | ||
| Valve face angle | 45° | ||
| Valve stem diameter (STD) | Intake | 0.2744-0.2752 inch | |
| Exhaust | 0.2740-0.2748 in. | ||
| Over size | Intake | 0.289-0.290 inch | |
| Exhaust | 0.289-0.290 inch | ||
| Intake | 0.304-0.305 inch | ||
| Exhaust | 0.304-0.305 inch | ||
| Valve springs compression pressure | Valve open to maximum lift | 193-217 lb @ 1.17 inch | |
| Valve closed | 64-72 lb 1.60 inch | ||
| Free length (approximate) | 1.83 inch | ||
| Installed spring height | 1.650-1.736 inch | ||
| Service limit | 10% Force Loss @ Specified Height | ||
| Rocker Arm | Ratio | 1:61 | |
| Valve tappet, hydraulic | Diameter (Std) | 0.874 inch | |
| Clearance to bore | 0.0007-0.0027 inch | ||
| Service limit | 0.005 inch | ||
| Leakdown rate | 20-200 seconds to leakdown 0.125 inch @50 lbs load and tappet filled with leak-down fluid. | ||
| Collapsed tappet gap (nominal) | Intake | 0.088-0.189 inch | |
| Exhaust | 0.088-0.189 inch | ||
| Camshaft position sensor shaft bearing bore diameter | Tappet bore diameter | 0.8752-0.08767 inch | |
| Camshaft bore inside diameter | No. 1 | 2.1531-2.1541 inch | |
| No. 2 | 2.1334-2.1344 inch | ||
| No. 3 | 2.1334-2.1344 inch | ||
| No. 4 | 2.1531-2.1541 inch | ||
| Camshaft | Lobe lift | Intake | 0.251 inch |
| Exhaust | 0.264 inch | ||
| Allowable lobe lift loss | 0.005 inch | ||
| Theoretical valve lift @ zero lash | Intake | 0.404 inch | |
| Exhaust | 0.424 inch | ||
| End play | Service limit | 0.007 inch | |
| Journal to bearing clearance | Clearance | 0.001-0.003 inch | |
| Journal diameter | All | 2.0074 - 2.0084 inch | |
| Cam bearing I.D. | 2.0094-2.0104 inch | ||
| Runout limit | 0.002 inch Runout of #2 or #3 relative to #1 and #4 | ||
| Out-of-round limit | 0.001 inch | ||
| Cylinder block | Head gasket surface flatness | 0.003 inch @ 6.00 inch | |
| Head gasket surface finish | 1.0-3.3 Micrometers (RMS) | ||
| Cylinder bore | Diameter | 3.504 inch | |
| Surface finish (RMS) | 0.45-0.96 micrometers | ||
| Out-of-round limit | 0.001 inch | ||
| Out-of-round service | 0.002 inch limit | ||
| Taper service limit | 0.002 inch | ||
| Main bearing bore diameter | 2.713 inch @ 2.712 in. | ||
| Crankshaft and flywheel | Main bearing journal diameter | 2.5190-2.5198 in. | |
| Out-of-round limit | 0.0003 in. | ||
| Taper limit | 0.006 in @0.003 in per 1 in. | ||
| Journal runout limit | 0.002 in. | ||
| Surface finish (RMS) | 10.0 micro in. | ||
| Thrust bearing journal | Length | 1.0148-1.067 inch | |
| Connecting rod journal | Diameter | 2.1253-2.1261 inch | |
| Out-of-round limit | 0.0003 inch MAX @ 0.0006 in Total | ||
| Taper limit | 0.0003 in per inch | ||
| Surface limit (RMS) | 0.25 micrometers | ||
| Main bearing thrust face | Surface finish (RMS) | 0.4 micrometers | |
| Runout limit | 0.001 inch | ||
| Flywheel ring gear lateral turnout (T.I.R.) | Automatic transmission | 0.07 inch | |
| Crankshaft end play | 0.004-0.008 inch | ||
| Connecting rod bearings | Clearance to crankshaft | Desired | 0.001-0.0014 inch |
| Allowable | 0.00086-0.0027 inch | ||
| Bearing wall thickness (Std) | 0.0612-0.0618 inch | ||
| Main bearings | Clearance to crankshaft | Desired | 0.001-0.0014 inch |
| Allowable | 0.0005-0.0023 inch | ||
| Bearing wall thickness | 0.0962-0.0976 inch 1st and 2nd 0.0980-0.0955 inch 3rd and Rear | ||
| Connecting rod, piston and rings | Connecting rod | Piston pin bore diameter | 0.9096-0.9112 inch |
| Crankshaft bearing bore diameter | 2.250-2.251 inch | ||
| Length (center-to-center) | 5.530-5.533 inch | ||
| Alignment (bore-to-bore max. diff.) | Twist | 0.003 per inch | |
| Bend | 0.0016 per inch | ||
| Side clearance (assembled to crank) | Standard | 0.006-0.014 inch | |
| Service limit | 0.014 in MAX | ||
| Piston Diameter | Coded red | 3.5024-3.5031 inch | |
| Coded blue | 3.5035-3.5041 inch | ||
| Coded yellow | 3.5045-3.5051 inch | ||
| Piston-to-bore clearance | 0.0012-0.0022 inch | ||
| Service limit | 0.031 inch Max | ||
| Service piston selection When replacing pistons, measure the cylinder bore. Install the indicated service piston. | Piston bore diameter | Service piston grade required | |
| Red | 3.5043-3.5053 inch | ||
| Blue | 3.5053-3.5063 inch | ||
| Yellow | 3.5063-3.5073 inch | ||
| Ring groove width | Compression (top) | 0.0602-0.0612 inch | |
| Compression (bottom) | 0.0602-0.0612 inch | ||
| Oil | 0.1587-0.1596 inch | ||
| Piston pin | Length | 2.248-2.278 inch | |
| Diameter | 0.9119-0.9124 inch | ||
| Pin to piston clearance | 0.002-0.0005 inch | ||
| Pin to rod clearance | Press Fit 4 Kilonewtons 900 lbs. | ||
| Piston rings - ring width | Compression (top) | 0.0575-0.0587 inch | |
| Compression (bottom) | 0.0575-0.0587 inch | ||
| Oil ring | Side Seal-Snug Fit | ||
| Service limit | Side Clearance 0.0006 in MAX | ||
| Ring gap | Compression (top) (in gauge) | 0.01-0.02 inch | |
| Compression (bottom) | 0.01-0.02 in | ||
| Oil ring (steel rail) (in gauge) | 0.010-0.049 in. | ||
| Side clearance | 1st ring | 0.0016-0.0037 inch | |
| 2nd ring | 0.0016-0.0037 inch | ||
| Lubrication system | Oil pump | Relief valve spring tension force @ length | 10.1-9.1 lb @ 1.11 in. |
| Relief valve to bore clearance | 0.0029-0.0017 inch | ||
| Oil pump gear backlash | 0.008-0.012 inch | ||
| Oil pump gear radial clearance | Idler and driver | 0.0055-0.002 inch | |
| Oil pump gear height clearance | 0.0027-0.0015 inch | ||
| Idler shaft to idler gear clearance | 0.0027-0.0015 inch | ||
| Driver shaft to housing clearance | 0.0019-0.0005 inch | ||
| Oil capacity with filter change | 4.5 Quarts | ||
| Drive belt tension | Vee-ribbed drive belts | 6 rib (non-serpentine) | |
| New belt installation tension New belt installed and tensioned; engine not rotated. | 34-23 ft.lbs. | ||
| Used belt reset tension Used belt is any belt that has been rotated on an engine. | 31-36 ft.lbs. | ||
| Cold belt audit check Cold belt i.e., 3-hour soak ; 0 warm uo. | Allowable limits | 20 ft.lbs. |