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392 Hemi in a Dodge Truck < BR>

392 Hemi Installed in a 40 Dodge 1/2 ton pickup.
It shakes the building when it is running!
Owner: Ron Skala


392 Hemi in a 68 Dart

392 Hemi Installed in a 68 Dart
Owner: Charlie Gluck
Email Charlie at hemidart@hotmail.com



Chrysler 392 Cubic Inch Hemi

All Dimensions are in Inches
Accuracy of number values (have been check ed) but are not guaranteed.

[Engine|Cyl #'s|Crankshaf t|Con Rods and Brgs| Con Rod Bushing|Camshaft| Camshaft Bearing Journals ]
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Engine
TypeV 90º
Number of Cylinders8
Bore 4.00
Stroke 3.90
Piston Displacement392 cu. in.
Compression Ratio
10.0 to 1< /TD>
Compression Pressure
at 150 rpm ( pl ugs removed)
wide open throttle
150 to 200 lb.
Maxium Variation between
Cylinders ( any one engine )
20 lb.
Firing order 1-8-4-3-6-5-7-2

Cylinder Numbering
From front of engine Left Bank 1-3-5-7
Right Bank 2-4-6-8

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< /TR>
Crankshaft
TypeFully Counterbalanced
Bearings Steel Backed Babbit
Journal Diameter 2.687 to 2.688< /TD>
Crank Pin Diameter 2.374 to 2.37 5
Maximum Out Of Round Permissible .001
Number Of Main Bearings 5
Diameter Clearance ( desired ) . 0005 to .0015
End Play .002 to .007
Thrust Taken By #3 Main Bearing< /TD>
Finish at Rear Seal Surface Diag onal Knurled
Interchangeability of Bearings Upper and Lower #'s 1,2,4
Upper and Lower # 3
Upper and Lower not Interchangeable # 5
Main Bearing (service)
All Available i n Standard and
the following Undersized
.001 .002 .003 .010 .012

Connecting Rods and Bearings
Type Drop Forged I Beam
Length (center to center) 6.951< /TD>
Weight (less bearing) 27.6 oz.
Bearings Steel Backed Babbitt
Diameter and Length 2.375 x 29/3 2
Diametral Clearance Desired .000 5 to .0015
Maximum Allowable Before Reconditioning .0025
Side Clearance .006 to .014
Bearings for Service Standard, . 001, .002, .003,
.010, .012 U.S.

Connecting Rod Bushing
Type Steel Backed Bronze
Number of Bearings 8
Diameter and Length .9843 to .98 46 x 1 1/4
Interchangeability All
Clearance .0001 to .0004 Selecti ve

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Camshaft
Drive Chain
Bearings Steel-Backed Babbitt
Number 5
Thrust Taken By Thrust Plate
End Play .002 to .006
Maximum Allowable Before
Reconditionin g
.010
Diametral Clearance .001 to .003
Maximum Allowable Before
Reconditionin g
.005

Camshaft Bearing Journals Diameter and Length
No. 1 1.998 to 1.999 x 15/16
No. 2, 3, 4 1.998 to 1.999 x 3/4
No. 5 1.4355 to 1.4365 x 29/32

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Camshaft Bearings Diameter and Length (after reaming)
No. 1 2.000 to 2.001 x 15/16
No. 2, 3, 4 2.000 to 2.001 x 13/ 16
No. 5 1.4375 to 1.4385 x 7/8

Camshaft Chain
Adjustment None
Number of Links 68
Pitch .375
Width 1 1/8

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Tappets
Type Hydraulic
Clearence in Block .0005 to .001 5
Body Diameter .9040 to .9045
Clearence Between Valve Stem
and Rocke r Arm or Tappet
Dry Lash .060 to .210

< /TR>
Pistons
Type Horizontal Slot with Steel Strut
Material Aluminum Alloy Tin Coat ed
Land Clearance (diametral) .029 to .034
Clearance at Skirt ( 1 1/2 from Bottom of Skirt) .0005 to .0015
Weight (Standard through .060 oversize) 700 gm.
Piston Length (overall) 4
Ring Groove Depth No. 1 .209
No. 2 .209
No. 3 .201
Pistons for Service Standard, .0 05, .020, .040, o.s.

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Piston Pins
Type Full Floating
Diameter and Length .9841 to .98 43 x 3.140 to 3.150
Clearance in Piston (thumb press at 70 86; F.) .0000 to .0005
End Play .004 to .026
Clearance in Rod (selective) .00 01 to .0004
Piston Pins for Service Standard , .003, .008 o.s.
Direction Offset in Piston Towa rd Right Side of Engine

Piston Rings
Number of Rings per Piston 3
Number of Compression Rings per Piston 2
Number of Oil Rings per Piston 1
Width of Rings Compression .0775 to .0780
Oil .1860 to .1865
Piston Ring Gaps .013 to .025
Ring Side Clearance Compression
Upper .002 to .0035
Intermediate .0020 to .0035
Oil .0010 to .0025

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Valves - Intake
Material Silicon-Chromium Steel< /TD>
Head Diameter 2
Length (to top of valve face) 5 1/32
Stem Diameter .372 to .373
Stem to Guide Clearance .001 to .003
Maximum Allowable Before
Reconditionin g
.004
Angle of Seat 45º
Adjustment None
Lift .388

Valves - Exhaust
Material Nitrogen Treated Mangan ese
Chromium-Nickel Steel
Head Diameter 1 3/4
Length (to top of valve face) 5 1/32
Stem Diameter .371 to .372
Stem to Guide Clearance .002 to .004
Maximum Allowable Before
Reconditionin g
.006
Angle of Seat 45º
Adjustment None
Lift .388

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Valve Springs
Number 16
Free Length 2
Load When Compressed to (valve closed) 1 11/16 - 78 to 88 lbs.
Load When Compressed to (valve open) 1 5/16 - 170 to 184 lbs.
Valve Spring ID 1.010 to 1.030

Cylinder Head
Number Used 2
Combustion Chamber Hemispherical
Valve Seat Run-out (maximum) .00 3
Intake Valve Seat Angle 45º ;
Seat Width (finished) .060 to .0 85
Exhaust Valve Seat Angle 45º ;
Seat Width (finished) .040 to .0 60
Cylinder Head Gasket (thickness) .028

< TD>40 to 65 lb.
Engine Lubrication
Pump Type Rotary, Full Pressure< /TD>
Capacity (qt.) - When Filter Element
i s Replaced add 1 qt.
5
Pump Drive Camshaft
Operating Pressure at 40 to 50 MPH
Pressure Drop Resulting from Clogged Filt er 15 to 20 lb.

[Engine|Cyl #'s|Crankshaf t|Con Rods and Brgs| Con Rod Bushing|Camshaft| Camshaft Bearing Journals ]
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Tightening Reference is here.


Frank Tomjack

  E-MAI L

Added 31/Jan/97