5.3
Engine and Cooling Systems
5
Engine Specifications
Engine Service Specifications - All Engines
• Cylinder Head Warp Limit = .006" (.015mm)
• Cylinder Taper Limit = .002" (.051mm)
• Cylinder Out-of-Round Limit = .002" (.051mm)
• Main Bearing Interference Fit:
Carbureted = .001" - .002" (.026 - .051mm)
CFI = .0014 - .0024 (.036 - .061mm)
• Connecting Rod Side Clearance = .0114" - .0295"
(.289 - .749mm)
• Crankshaft Runout Deflection Limit = .0025" (.07mm)
ENGINE MODEL
NUMBER
INSTALLED
HEAD
VOLUME
(CC)
HEAD SQUISH
INCHES
(MM)
PISTON-TO-
CYLINDER
CLEARANCE
INCHES
(MM)
PISTON RING END
GAP
INCHES
(MM)
TRIGGER-TO-
FLYWHEEL GAP
(MM)
S3273-6044-PU6F
S3274-6044-PU6F
S3466-6044-PU6F
S3467-6044-PU6F
27.6 - 28.9
.050 - .060
(1.283 - 1.544)
.004 - .006
(.105 - .159)
.014 - .020
(.356 - .508)
.4 - .8
S3206-6044-PU6H
S3468-6044-PU6H
S3469-6044-PU6H
26.65 - 28.15
.045 - .058
(1.143 - 1.482)
.36 - 1.34
S3305-7044-PF7J
S3470-7044-PU7J
S3471-7044-PU7J
29.3 - 30.85
.046 - .059
(1.17 - 1.51)
.0044 - .0059
(.112 - .151)
.017 - .026
(.44 - .650)
S3322-7044-PF7J
.0042 - .006
(.109 - .163)
Upper
.010 - .018
(.25 - .45)
Lower
.014 - .020
(.35 - .50)
S3489-8044-PU8E
S3741-8044-PU8E
33.3 - 35.3
.049 - .065
(1.25 - 1.64)
.0037 - .0053
(.095 - .135)
.017 - .025
(.45 - .65)