SERVICE MANUAL NUMBER 24
5.0l / 305 cid / 5.7l / 350 cid ENGINES
VALVE SYSTEM
Engine
Lifter Type
305 cid (5.0L) 350 CID (5.7L)
Roller Hydraulic
Rocker Arm Ratio
1.50 to 1
Intake
0.2744-.2783 (6.97-7.07)
0.2834-.2874 (7.20-7.30)
Valve Lift
Exhaust
Valve Lash
(Intake and Exhaust)
1
Turn Down from Zero Lash
Intake
45°
Face Angle
Exhaust
45°
46°
Seat Angle (Intake & Exhaust)
Seat Runout (Intake & Exhaust)
0.0019 (0.05) Max
0.03448-0.070
(1.14-1.78)
0.0401-0.0649
(1.02-1.65)
Intake
Seat Width
0.0649-0.098
(1.65-2.49)
0.059-0.100
(1.50-2.56)
Exhaust
Intake
Exhaust
Intake
0.00098-0.0027 (0.025-0.069)
0.00098-0.0027 (0.025-0.069)
0.00098-0.0037 (0.025-0.094)
Production
Service
Stem
Clearance
0.00098-0.0037
(0.025-0.094)
0.0010-0.0076
(0.025-0.194)
Exhaust
Intake
Exhaust
Intake
.341 (8.66)
.341 (8.66)
1.84 (46.74) 1.94 (49.28)
Stem Diameter
Valve Diameter
Exhaust
1.50 (38.1)
Valve Margin After Surfacing - Intake and Exhaust
0.031 (0.79) Minimum
VALVE SPRING
Engine
5.0l / 305 cid / 350 cid (5.7L)
Free Length
2.019 (51.3)
Valve
76-84
Lb. (338-374 N) at 1.7 (43.2)
Lb. (832-903 N) at 1.27 (32.3)
Closed
Pressure
Valve
187-203
Open
Valve Spring
Intake
1.68-1.70 (42.92-43.43)
1.68-1.70 (42.92-43.43)
2.019 (51.3)
Installed
Height
Exhaust
Free Length
Approximate Number of
Coils
4
Index
90-861327--1
OCTOBER 1999
Page 3A-9
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 305 CID, Mercury MerCruiser 350 CID |
| Model Year | 1998, 1999, 2000, 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(1 votes, average: 4 out of 4)
Marine readers have rated Mercury MerCruiser Engines Service Manual Number 24 GM V-8 305 CID 350 CID 4.0 out of 4.0 based on 1 product reviews. Great performance engine.
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