Indmar Marine Engines
B-1
Appendix – B
ENGINE SPECIFICATIONS
See page ii for engine models 5.7L Carbureted 5.7L MPI Hammerhead 383 LS7 LY6/6.0L 8.1L MPI
Number of Cylinders V-8
Displacement 350 CID (5.7L) 383 CID (6.3L) 427 CID (7.0L) 364 CID (6.0L) 496 CID (8.1L)
Bore/Stroke
4.0012 x 3.480 in.
(101.63 x 88.39 mm)
4.0012 x 3.8 in
(101.63 x 96.52 mm)
4.125 x 4.00
(104.8 x 101.6)
3.898 x 3.622 in.
(99 x 92 mm)
4.25 x 4.37 in.
(108 x 111 mm)
Compression Ratio 9.4:1 9.7:1 11.0:1 10.1:1 9.1:1
Compression Pressure (Note 1) Minimum 100 PSI (690 kPa)
Idle RPM in Neutral (Note 2)
650
±
50 RPM
Operating Range at WOT 4400-4800 RPM 4600-5200 RPM 5200-5600 RPM 5000-5400 RPM
Oil Pressure at Idle 4 PSI (41 kPa) Minimum Hot 5 PSI (34 kPa) Min
Oil Pressure at 2000 RPM 18 PSI (124 kPa) Minimum Hot 10 PSI (69 kPa) Min
Oil Filter Pennzoil PZ3, AC-PF25
AC-PF454 (on engine)
Pennzoil PZ3 (remote)
Fuel Pump Pressure
8 PSI Max
(55.2 kPa)
60 PSI Min at Keyup (414 kPa)
Electrical System 12 Volt DC Negative (-) Ground
Minimum Battery Requirements 650 cca/700 mca/120Ah
Firing Order 1-8-4-3-6-5-7-2 1-8-7-2-6-5-4-3
Spark Plug Type AC 41-932 AC 41-985 AC 41-983
Spark Plug Gap
0.030 in.
(0.76 mm)
0.060 in. (1.5 mm) 0.050 in. (1.3 mm)
Base Timing at 1000 RPM (Note 3) 10° BTDC Non Adjustable
Thermostat 160°F (71°C)
OME0502-07 Body.qxd 6/14/06 10:38 AM Page B-1
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