Indmar Marine Engines
B-3
454 Carb
502 Carb
Number of Cylinders
V-8
Displacement
454 CID (7.4L)
502 CID (8.2L)
Bore/Stroke
4.25 x 4 in.
4.46 x 4 in.
(107.95 x 101.6 mm)
(113.28 x 101.6 mm)
Compression Ratio
8.6:1
8.75:1
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
Oil Pressure at Idle
5 PSI (34 kPa) Minimum
Oil Pressure at 2000 RPM
10 PSI (69 kPa) Minimum
Oil Filter
AC-PF454
Fuel Pump Pressure
8 PSI Max (55.2 kPa)
Electrical System
12 Volt DC Negative (-) Ground
Minimum Battery Requirements
550 cca/700 mca/120Ah
Firing Order
1-8-4-3-6-5-7-2
Spark Plug Type
MR43LTS or 41-932 (Platinum Tip)
Spark Plug Gap
0.045 in. (1.1 mm) .060 (Platinum)
Base Timing at 1000 RPM (Note 3)
10˚ Before Top Dead Center
Thermostat
160° F (71° C)
OM0502-04 Body 11/14/03 11:23 AM Page B-3
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