<
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 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
| Type | V 90º |
| Number of Cylinders | 8 |
| Bore | 4.00
|
| Stroke | 3.90
|
| Piston Displacement | 392 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
|
Crankshaft
| Type | Fully 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 | <
/TR>
| 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 |
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 |
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 |
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 |
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 | <
/TR>
| Ring Groove Depth | No. 1 .209
No. 2 .209
No. 3 .201 |
| Pistons for Service | Standard, .0
05, .020, .040, o.s. |
| |
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 |
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 |
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 |
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 | <
TD>40 to 65 lb.
| Pressure Drop Resulting from Clogged Filt
er | 15 to 20 lb. |
| |
Tightening Reference is here.
Frank Tomjack
E-MAI
L
Added 31/Jan/97
