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Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC P42 Commercial Chassis 🢒 Engine 🢒 Engine Mechanical - 6.5L 🢒 Engine Mechanical Specifications

Engine Mechanical Specifications L65

Table 1: Vacuum Pump Specifications

Application

Specification

Metric

English

General Data

  • Type

V8

  • Displacement

6.5L

396CID

  • Bore

103 mm

4.0600 cu in

  • Stroke

97 mm

3.8200 cu in

  • Compression Ratio

20.2:1

  • Cylinder Compression (Sea Level)

2,550 kPa minimum (subtract 55 kPa per 305 m of elevation above sea level)

370 psi minimum (subtract 8 psi per 1,000 ft of elevation above sea level)

  • Firing Order

1-8-7-2-6-5-4-3

  • Cranking RPM (Cold)

100-RPM minimum

  • Cranking RPM (Hot)

180-RPM minimum

  • Oil Pressure (Mechanical Gage) (Hot)

41 kPa minimum @ IDLE

207-296 kPa minimum @ 2000 RPM

6 psi minimum @ IDLE

30-43 psi minimum @ 2000 RPM

  • Operating Temperature

88°C

190°F

Crankshaft Bore

  • ID

79.8260-79.8500 mm

3.1427-3.1437 in

  • Out-of-Round

0.0830 mm maximum

0.0033 in maximum

Camshaft Bore

  • ID (1)

59.1200-59.1700 mm

2.3290-2.3310 in

  • ID (2)

58.8700-58.9200 mm

2.3190-2.3210 in

  • ID (3)

58.6200-58.6700 mm

2.3100v2.3120 in

  • ID (4)

58.3700-58.4200 mm

2.2980-2.3020 in

  • ID (5)

54.3700-54.4200 mm

2.1406-2.1425 in

  • Out-of-Round

0.1000 mm maximum

0.0039 in maximum

Cylinder Bore

  • Production STD (J) ID (1-6)

102.9720-102.9900 mm

4.0571-4.0578 in

  • Production STD (J) ID (7-8)

102.9850-103.0030 mm

4.0576-4.0583 in

  • Production O.S. (S) ID (1-6)

103.1170-103.1300 mm

4.0628-4.0633 in

  • Production O.S. (S) ID (7-8)

103.1300-103.1430 mm

4.0633-4.0638 in

  • Service Hi Limit (G) ID (1-6)

103.0130-103.0260 mm

4.0587-4.0592 in

  • Service Hi Limit (G) ID (7-8)

103.0260-103.0390 mm

4.0592-4.0597 in

  • Service O.S. (OS) ID (1-6)

103.5080-103.5120 mm

4.0782-4.0784 in

  • Service O.S. (OS) ID (7-8)

103.5210-103.5250 mm

4.0787-4.0789 in

Piston

  • Production STD (J or JT) OD (1-6)

102.8650-102.8830 mm

4.0529-4.0536 in

  • Production STD (J or JT) OD (7-8)

102.8650-102.8830 mm

4.0529-4.0536 in

  • Production O.S. (S or ST) OD (1-6)

103.0080-103.0260 mm

4.0585-4.0592 in

  • Production O.S. (S or ST) OD (7-8)

103.0080-103.0260 mm

4.0585-4.0592 in

  • Service STD (JT) OD (1-6)

102.8650-102.8830 mm

4.0529-4.0536 in

  • Service STD (JT) OD (7-8)

102.8650-102.8830 mm

4.0529-4.0536 in

  • Service Hi Limit (GT) OD (1-6)

102.9040-102.9220 mm

4.0544-4.0551 in

  • Service Hi Limit (GT) OD (7-8)

102.9040-102.9220 mm

4.0544-4.0551 in

  • Service OS (0.50 OST) OD (1-6)

103.399-103.417 mm

4.0739-4.0746 in

  • Service OS (0.50 OST) OD (7-8)

103.399-103.417 mm

4.0739-4.0746 in

  • Out-of-Round

0.0200 mm maximum

0.0008 in maximum

  • Taper

0.0200 mm maximum

0.0008 in maximum

  • Cylinder Bore Clearance (1-6)

0.0890-0.1250 mm

0.0035-0.0049 in

  • Cylinder Bore Clearance (7-8)

0.1020-0.1380 mm

0.0040-0.0054 in

  • Cylinder Bore Protrusion

0.0900-0.3100 mm

0.0035-0.0122 in

  • Pin OD (Green)

30.9961-30.9987 mm

1.2203-1.2204 in

  • Pin OD (Orange)

30.9987-31.0013 mm

1.2204-1.2205 in

  • Pin Bore ID (Green)

31.0088-31.0114 mm

1.2208-1.2209 in

  • Pin Bore ID (Orange)

31.0114-31.0140 mm

1.2209-1.2210 in

  • Pin Bore Clearance

0.0101-0.153 mm

0.0004-0.0006 in

Piston Ring (Compression)

  • Side Clearance (Top Ring)

Keystone-Type Ring

  • Side Clearance (Second Ring)

0.0390-0.0790 mm

0.0015-0.0052 in

  • Gap (Top Ring) (1-6)

0.2500-0.5700 mm

0.0100-0.0220 in

  • Gap (Top Ring) (7-8)

0.2900-0.6100 mm

0.0120-0.0240 in

  • Gap (Second Ring) (1-6)

0.7200-1.0300 mm

0.0280-0.0410 in

  • Gap (Second Ring) (7-8)

0.7600-1.0700 mm

0.0300-0.0430 in

Piston Ring (Oil)

  • Side Clearance

0.0400-0.0900 mm

0.0016-0.0035 in

  • Gap

0.2500-0.5100 mm

0.0100-0.0200 in

Connecting Rod

  • ID (Crankshaft Rod Journal End)

64.1240-64.1500 mm

2.5265-2.5275 in

  • ID (Piston Pin End-With Bushing)

31.0120-31.0270 mm

1.2209-1.2215 in

  • Piston Pin Bushing Clearance

0.0081-0.0309 mm

0.0003-0.0012 in

Crankshaft Journal (Main)

  • OD (White) (1-4)

74.9330-74.9420 mm

2.9524-2.9527 in

  • OD (White) (5)

74.9280-74.9360 mm

2.9522-2.9525 in

  • OD (Orange or Red) (1-4)

74.9250-74.9330 mm

2.9520-2.9524 in

  • OD (Orange or Red) (5)

74.9200-74.9280 mm

2.9518-2.9522 in

  • OD (Blue) (1-4)

74.9170-74.9250 mm

2.9517-2.9520 in

  • OD (Blue) (5)

74.9120-74.9200 mm

2.9515-2.9518 in

  • Taper

0.0830 mm maximum

0.0033 in maximum

  • Out-of-Round

0.0830 mm maximum

0.0033 in maximum

  • Bearing Clearance (1-4)

0.0450-0.0830 mm

0.0018-0.0033 in

  • Bearing Clearance (5)

0.0550-0.0920 mm

0.0022-0.0037 in

Crankshaft Journal (Rod)

  • OD (Yellow)

60.9260-60.9390 mm

2.4000-2.4010 in

  • OD (Green)

60.9130-60.9260 mm

2.3990-2.4000 in

  • Taper

0.0050-0.0830 mm maximum

0.0018-0.0033 in maximum

  • Out-of-Round

0.0050-0.0830 mm maximum

0.0018-0.0033 in maximum

  • Bearing Clearance

0.0350-0.0900 mm

0.0014-0.0035 in

  • Side Clearance

0.1700-0.0305 mm

0.0020-0.0120 in

  • End Play

0.1000-0.2500 mm

0.0039-0.0010 in

Crankshaft Bearing (Main)-Select Fit: Refer toCrankshaft and Bearings Installation (L65) .

  • White (1)

STD in Case, STD in Cap

STD in Case, STD in Cap

  • White (2)

0.013 mm U.S. in Case, STD in Cap

0.0005 in U.S. in Case, STD in Cap

  • White (3)

0.026 mm U.S. in Case, STD in Cap

0.0010 in U.S. in Case, STD in Cap

  • Orange or Red (1)

STD in Case, 0.013 mm U.S. in Cap

STD in Case, 0.0005 in U.S. in Cap

  • Orange or Red (2)

0.013 mm U.S. in Case, 0.013 mm U.S. in Cap

0.0005 in U.S. in Case, 0.0005 in U.S. in Cap

  • Blue (1)

STD in Case, 0.026 mm U.S. in Cap

STD in Case, 0.0010 in U.S. in Cap

  • Blue (2)

0.013 mm U.S. in Case, 0.026 mm U.S. in Cap

0.0005 in U.S. in Case, 0.0010 in U.S. in Cap

  • Blue (3)

0.026 mm U.S. in Case, 0.026 mm U.S. in Cap

0.0010 in U.S. in Case, 0.0010 in U.S. in Cap

Crankshaft Bearing (Rod)-Select Fit: Refer toCrankshaft and Bearings Installation (L65) .

  • Yellow

STD in Rod, STD in Cap

STD in Rod, STD in Cap

  • Green

STD in Rod, 0.026 mm U.S. in Cap

STD in Rod, 0.0010 in U.S. in Cap

Camshaft

  • Journal OD (1-4)

54.9700-55.0130 mm

2.1642-2.1659 in

  • Journal OD (5)

50.9760-51.0190 mm

2.0069-2.0086 in

  • Journal Clearance (1-4)

0.0250-0.1180 mm

0.0010-0.0046 in

  • Journal Clearance (5)

0.0200-0.1130 mm

0.0008-0.0044 in

  • Intake Lobe Lift

7.0830-7.1830 mm

0.2790-0.2830 in

  • Exhaust Lobe Lift

7.0830-7.1830 mm

0.2790-0.2830 in

  • End Play

0.51-0.305 mm

0.0020-0.0120 in

  • Timing Chain Deflection (Free Play) (New Chain)

12.7000 mm

0.5000 in

  • Timing Chain Deflection (Free Play) (Used Chain)

20.3000 mm

0.8000 in

Valve System

  • Valve Lifter

Hydraulic Roller

  • Valve Rocker Arm Ratio

1.50:1

  • Valve Lash

Non-Adjustable

  • Valve Face Angle (Intake)

45 degrees

  • Valve Face Angle (Exhaust)

45 degrees

  • Valve Seat Angle (Intake)

46 degrees

  • Valve Seat Angle (Exhaust)

46 degrees

  • Valve Runout (Intake)

0.5000 mm

0.0020 in

  • Valve Runout (Exhaust)

0.5000 mm

0.0020 in

  • Seat Width (Intake)

0.8900-1.5300 mm

0.0351-0.0603 in

  • Seat Width (Exhaust)

1.5700-2.3600 mm

0.0618-0.0930 in

  • Valve Protrusion (Intake) (This is a negative value, as the valve is recessed in the head)

-0.8600 to -1.2200 mm

-0.0340 to -0.0480 in

  • Valve Protrusion (Exhaust) (This is a negative value, as the valve is recessed in the head)

-0.8600 to -1.2200 mm

-0.0340 to -0.0480 in

  • Stem Clearance (Intake)

0.0260-0.0690 mm

0.0010-0.0027 in

  • Stem Clearance (Exhaust)

0.0260-0.0690 mm

0.0010-0.0027 in

  • Valve Spring Pressure (Closed) (Intake)

356 N·m @  46

80 lb @ 1.80 in

  • Valve Spring Pressure (Closed) (Exhaust)

356 N·m @  46

80 lb @ 1.80 in

  • Valve Spring Pressure (Open) (Intake)

1025 N·m @  35.3

230 lb 1.40 in

  • Valve Spring Pressure (Open) (Exhaust)

1025 N·m @  35.3

230 lb 1.40 in

  • Valve Spring Installed Height (Intake)

46 mm

1.8000 in

  • Valve Spring Installed Height (Exhaust)

46 mm

1.8000 in

Vacuum Pump Specifications

Application

Specification

Metric

English

Elevation

  • 0 m (0 ft) (Sea Level)

-70 kPa (minimum)

21 in (minimum)

  • 1 524 m (5,000 ft)

-60 kPa (minimum)

18 in (minimum)

  • 3 048 m (10,000 ft)

-49 kPa (minimum)

14 in (minimum)

  • 4 572 m (15,000 ft)

-40 kPa (minimum)

12 in (minimum)

Engine Mechanical Specifications L57 (MFI)

Table 1: Vacuum Pump Specifications

Application

Specification

Metric

English

General Data

  • Type

V8

  • Displacement

6.5L

396CID

  • Bore

103 mm

4.0600 cu in

  • Stroke

97 mm

3.8200 cu in

  • Compression Ratio

20.9:1

  • Cylinder Compression (Sea Level)

2,625 kPa minimum (subtract 55 kPa per 305 m of elevation above sea level)

380 psi minimum (subtract 8 psi per 1,000 ft of elevation above sea level)

  • Firing Order

1-8-7-2-6-5-4-3

  • Cranking RPM (Cold)

100-RPM minimum

  • Cranking RPM (Hot)

180-RPM minimum

  • Oil Pressure (Mechanical Gage) (Hot)

41 kPa minimum @ IDLE

207-296 kPa minimum @ 2000 RPM

6 psi minimum @ IDLE

30-43 psi minimum @ 2000 RPM

  • Operating Temperature

88°C

190°F

Crankshaft Bore

  • I.D.

79.8260-79.8500 mm

3.1427-3.1437 in

  • Out-of-Round

0.0830 mm maximum

0.0033 in maximum

Camshaft Bore

  • I.D. (1)

59.1200-59.1700 mm

2.3290-2.3310 in

  • I.D. (2)

58.8700-58.9200 mm

2.3190-2.3210 in

  • I.D. (3)

58.6200-58.6700 mm

2.3100v2.3120 in

  • I.D. (4)

58.3700-58.4200 mm

2.2980-2.3020 in

  • I.D. (5)

54.3700-54.4200 mm

2.1406-2.1425 in

  • Out-of-Round

0.1000 mm maximum

0.0039 in maximum

Cylinder Bore

  • Production STD (J) I.D. (1-6)

102.9720-102.9900 mm

4.0571-4.0578 in

  • Production STD (J) I.D. (7-8)

102.9850-103.0030 mm

4.0576-4.0583 in

  • Production O.S. (S) I.D. (1-6)

103.1170-103.1300 mm

4.0628-4.0633 in

  • Production O.S. (S) I.D. (7-8)

103.1300-103.1430 mm

4.0633-4.0638 in

  • Service Hi Limit (G) I.D. (1-6)

103.0130-103.0260 mm

4.0587-4.0592 in

  • Service Hi Limit (G) I.D. (7-8)

103.0260-103.0390 mm

4.0592-4.0597 in

  • Service O.S. (OS) I.D. (1-6)

103.5080-103.5120 mm

4.0782-4.0784 in

  • Service O.S. (OS) I.D. (7-8)

103.5210-103.5250 mm

4.0787-4.0789 in

Piston

  • Production STD (J or JT) O.D. (1-6)

102.8650-102.8830 mm

4.0529-4.0536 in

  • Production STD (J or JT) O.D. (7-8)

102.8650-102.8830 mm

4.0529-4.0536 in

  • Production O.S. (S or ST) O.D. (1-6)

103.0080-103.0260 mm

4.0585-4.0592 in

  • Production O.S. (S or ST) O.D. (7-8)

103.0080-103.0260 mm

4.0585-4.0592 in

  • Service STD (JT) O.D. (1-6)

102.8650-102.8830 mm

4.0529-4.0536 in

  • Service STD (JT) O.D. (7-8)

102.8650-102.8830 mm

4.0529-4.0536 in

  • Service Hi Limit (GT) O.D. (1-6)

102.9040-102.9220 mm

4.0544-4.0551 in

  • Service Hi Limit (GT) O.D. (7-8)

102.9040-102.9220 mm

4.0544-4.0551 in

  • Service OS (0.50 OST) O.D. (1-6)

103.399-103.417 mm

4.0739-4.0746 in

  • Service OS (0.50 OST) O.D. (7-8)

103.399-103.417 mm

4.0739-4.0746 in

  • Out-of-Round

0.0200 mm maximum

0.0008 in maximum

  • Taper

0.0200 mm maximum

0.0008 in maximum

  • Cylinder Bore Clearance (1-6)

0.0890-0.1250 mm

0.0035-0.0049 in

  • Cylinder Bore Clearance (7-8)

0.1020-0.1380 mm

0.0040-0.0054 in

  • Cylinder Bore Protrusion

0.0900-0.3100 mm

0.0035-0.0122 in

  • Pin O.D. (Green)

30.9961-30.9987 mm

1.2203-1.2204 in

  • Pin O.D. (Orange)

30.9987-31.0013 mm

1.2204-1.2205 in

  • Pin Bore I.D. (Green)

31.0088-31.0114 mm

1.2208-1.2209 in

  • Pin Bore I.D. (Orange)

31.0114-31.0140 mm

1.2209-1.2210 in

  • Pin Bore Clearance

0.0101-0.153 mm

0.0004-0.0006 in

Piston Ring (Compression)

  • Side Clearance (Top Ring)

Keystone-Type Ring

  • Side Clearance (Second Ring)

0.0390-0.0790 mm

0.0015-0.0052 in

  • Gap (Top Ring) (1-6)

0.2500-0.5700 mm

0.0100-0.0220 in

  • Gap (Top Ring) (7-8)

0.2900-0.6100 mm

0.0120-0.0240 in

  • Gap (Second Ring) (1-6)

0.7200-1.0300 mm

0.0280-0.0410 in

  • Gap (Second Ring) (7-8)

0.7600-1.0700 mm

0.0300-0.0430 in

Piston Ring (Oil)

  • Side Clearance

0.0400-0.0900 mm

0.0016-0.0035 in

  • Gap

0.2500-0.5100 mm

0.0100-0.0200 in

Connecting Rod

  • I.D. (Crankshaft Rod Journal End)

64.1240-64.1500 mm

2.5265-2.5275 in

  • I.D. (Piston Pin End-With Bushing)

31.0120-31.0270 mm

1.2209-1.2215 in

  • Piston Pin Bushing Clearance

0.0081-0.0309 mm

0.0003-0.0012 in

Crankshaft Journal (Main)

  • O.D. (White) (1-4)

74.9330-74.9420 mm

2.9524-2.9527 in

  • O.D. (White) (5)

74.9280-74.9360 mm

2.9522-2.9525 in

  • O.D. (Orange or Red) (1-4)

74.9250-74.9330 mm

2.9520-2.9524 in

  • O.D. (Orange or Red) (5)

74.9200-74.9280 mm

2.9518-2.9522 in

  • O.D. (Blue) (1-4)

74.9170-74.9250 mm

2.9517-2.9520 in

  • O.D. (Blue) (5)

74.9120-74.9200 mm

2.9515-2.9518 in

  • Taper

0.0830 mm maximum

0.0033 in maximum

  • Out-of-Round

0.0830 mm maximum

0.0033 in maximum

  • Bearing Clearance (1-4)

0.0450-0.0830 mm

0.0018-0.0033 in

  • Bearing Clearance (5)

0.0550-0.0920 mm

0.0022-0.0037 in

Crankshaft Journal (Rod)

  • O.D. (Yellow)

60.9260-60.9390 mm

2.4000-2.4010 in

  • O.D. (Green)

60.9130-60.9260 mm

2.3990-2.4000 in

  • Taper

0.0050-0.0830 mm maximum

0.0018-0.0033 in maximum

  • Out-of-Round

0.0050-0.0830 mm maximum

0.0018-0.0033 in maximum

  • Bearing Clearance

0.0350-0.0900 mm

0.0014-0.0035 in

  • Side Clearance

0.1700-0.0305 mm

0.0020-0.0120 in

  • End Play

0.1000-0.2500 mm

0.0039-0.0010 in

Crankshaft Bearing (Main)-Select Fit: Refer toCrankshaft and Bearings Installation (L65) .

  • White (1)

STD in Case, STD in Cap

STD in Case, STD in Cap

  • White (2)

0.013 mm U.S. in Case, STD in Cap

0.0005 in U.S. in Case, STD in Cap

  • White (3)

0.026 mm U.S. in Case, STD in Cap

0.0010 in U.S. in Case, STD in Cap

  • Orange or Red (1)

STD in Case, 0.013 mm U.S. in Cap

STD in Case, 0.0005 in U.S. in Cap

  • Orange or Red (2)

0.013 mm U.S. in Case, 0.013 mm U.S. in Cap

0.0005 in U.S. in Case, 0.0005 in U.S. in Cap

  • Blue (1)

STD in Case, 0.026 mm U.S. in Cap

STD in Case, 0.0010 in U.S. in Cap

  • Blue (2)

0.013 mm U.S. in Case, 0.026 mm U.S. in Cap

0.0005 in U.S. in Case, 0.0010 in U.S. in Cap

  • Blue (3)

0.026 mm U.S. in Case, 0.026 mm U.S. in Cap

0.0010 in U.S. in Case, 0.0010 in U.S. in Cap

Crankshaft Bearing (Rod)-Select Fit: Refer toCrankshaft and Bearings Installation (L65) .

  • Yellow

STD in Rod, STD in Cap

STD in Rod, STD in Cap

  • Green

STD in Rod, 0.026 mm U.S. in Cap

STD in Rod, 0.0010 in U.S. in Cap

Camshaft

  • Journal O.D.(1-4)

54.9700-55.0130 mm

2.1642-2.1659 in

  • Journal O.D.(5)

50.9760-51.0190 mm

2.0069-2.0086 in

  • Journal Clearance (1-4)

0.0250-0.1180 mm

0.0010-0.0046 in

  • Journal Clearance (5)

0.0200-0.1130 mm

0.0008-0.0044 in

  • Intake Lobe Lift

7.0830-7.1830 mm

0.2790-0.2830 in

  • Exhaust Lobe Lift

7.0830-7.1830 mm

0.2790-0.2830 in

  • End Play

0.51-0.305 mm

0.0020-0.0120 in

  • Timing Chain Deflection (Free Play) (New Chain)

12.7000 mm

0.5000 in

  • Timing Chain Deflection (Free Play) (Used Chain)

20.3000 mm

0.8000 in

Valve System

  • Valve Lifter

Hydraulic Roller

  • Valve Rocker Arm Ratio

1.50:1

  • Valve Lash

Non-Adjustable

  • Valve Face Angle (Intake)

45 degrees

  • Valve Face Angle (Exhaust)

45 degrees

  • Valve Seat Angle (Intake)

46 degrees

  • Valve Seat Angle (Exhaust)

46 degrees

  • Valve Runout (Intake)

0.5000 mm

0.0020 in

  • Valve Runout (Exhaust)

0.5000 mm

0.0020 in

  • Seat Width (Intake)

0.8900-1.5300 mm

0.0351-0.0603 in

  • Seat Width (Exhaust)

1.5700-2.3600 mm

0.0618-0.0930 in

  • Valve Protrusion (Intake) (This is a negative value, as the valve is recessed in the head)

-0.8600 to -1.2200 mm

-0.0340 to -0.0480 in

  • Valve Protrusion (Exhaust) (This is a negative value, as the valve is recessed in the head)

-0.8600 to -1.2200 mm

-0.0340 to -0.0480 in

  • Stem Clearance (Intake)

0.0260-0.0690 mm

0.0010-0.0027 in

  • Stem Clearance (Exhaust)

0.0260-0.0690 mm

0.0010-0.0027 in

  • Valve Spring Pressure (Closed) (Intake)

356 N·m @  46

80 lb @ 1.80 in

  • Valve Spring Pressure (Closed) (Exhaust)

356 N·m @  46

80 lb @ 1.80 in

  • Valve Spring Pressure (Open) (Intake)

1025 N·m @  35.3

230 lb 1.40 in

  • Valve Spring Pressure (Open) (Exhaust)

1025 N·m @  35.3

230 lb 1.40 in

  • Valve Spring Installed Height (Intake)

46 mm

1.8000 in

  • Valve Spring Installed Height (Exhaust)

46 mm

1.8000 in

Vacuum Pump Specifications

Application

Specification

Metric

English

Elevation

  • 0 m (0 ft) (Sea Level)

-70 kPa (minimum)

21 in (minimum)

  • 1 524 m (5,000 ft)

-60 kPa (minimum)

18 in (minimum)

  • 3 048 m (10,000 ft)

-49 kPa (minimum)

14 in (minimum)

  • 4 572 m (15,000 ft)

-40 kPa (minimum)

12 in (minimum)