Dodge engines information

Started by frank-id2, November 07, 2012, 08:00 PM

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frank-id2

November 07, 2012, 08:00 PM
 
B / RB Engine Blocks


   
Chrysler's "B" and "RB" engine blocks are extremely sturdy. The block casting  uses extensive support webbing in the mid and lower areas. The main bearing bores are supported by the  block sidewalls which extend past the crank centerline more than 2 inches. Additional webbing to support the main bearing bores make the block very rigid without excessive weight. Bare block castings weigh in at about 215 pounds for the "B" engine and 225 for the "RB". The primary differences between the "B" and "RB" blocks are the main bearing bore diameters (2.625 for the "B", 2.750 for the "RB") and the crank centerline to deck surface dimensions (9.980 for the "B" vs. 10.725 for the "RB"). Rod journals are the same for both engines.  Interchange between the engines is exceptional. Both use the same 4.80 inch bore spacing and the same cam to crank spacing. The heads, timing chain, camshaft, oil pan etc. interchange completely. Intake manifolds don't interchange due to the difference in deck heights.

B&RB Bore/Stroke Combinations CIDBore

Stroke
Series

350
4.060
3.380
B

361
4.120
3.380
B

383
4.250
3.380
B

400
4.340
3.380
B

383
4.030
3.750
RB

413
4.120
3.700
RB

426
4.250
3.750
RB

426
4.250
3.750
RB

440
4.320
3.750
RB
How to Identify Mopar B&RB Blocks
 

Engine Block Stamping #
[/t][/t][/t]On "RB" engines the cubic inch displacement is stamped on a pad located at the front of the block. "B" engines have a similar pad located on the right side of the block near the base of the distributor.  Engine displacement, performance level, undersized bearing journals, oversize cylinders and other special information are also identified here.
Decoding Engine Block Stamping #'s 
1960-1964
From '60 to '64 a typical engine ID code will look like this: S42-222
The first digit identifies the year: S=1962
The next 2 digits are the first 2 digits of the engine CID: 42=426
The last 3 digits are the date and month: 222= February 22
1965 - 1971
In '65 the third digit of the CID was added to the engine ID  code.
After '65 a typical engine ID code will look like this: B383-322
The first digit identifies the year: B=1966
The next 3 digits are the engine CID: 383=383
The last 3 digits are the date and month: 322= March 22
Year Codes for B & RB Engines

       
  • A - 1965
  • B - 1966
  • C - 1967
  • D - 1968
  • E - 1969

       
  • F - 1970
  • G - 1971
  • H - 1972
  • J - 1973
  • P - 1960

       
  • R - 1961
  • S - 1962
  • T - 1963
  • V - 1964

       
  • 4T - 1974
  • 5T - 1975
  • 6T - 1976
  • 7T - 1977
  • 8T - 1978
 
Other Stampings
 Additional stampings may be found on the ID pad.
They identify non standard engine components. [/t][/t][/t] 
A - .020 oversize cylinder bores
Diamond - oversize tappets
E - Cast Crankshaft
HP - High Performance
L or LC - low compression
M - .001 undersize main bearing journals
Maltese Cross - .001" undersized bearing shells
Maltese Cross and an X - .010" undersized crankshaft
O.S. - .005 oversize valve stems
P - premium fuel
R - regular fuel
RX or MX - all main or rod journals .010" undersized
S - special engine
WT or TW - water test
X - .010" undersize crankshaft
'68 and later B&RB engine serial numbers 
  Beginning in 1968 all Mopar B&RB engine blocks have an engine serial number stamped in the left side oil pan rail at the rear corner under the starter opening.
Sample Serial # PT44028650001
Plant Code: PT

       
  • MV,MN - Marysville Plant (426 Hemi)
  • PT - Trenton Plant (361, 383, 400, 413, 426, 440)
Cubic Inch Displacement: 440

       
  • Should need no further explanation
Date Code: 2865

       
  • Based on 10,000 day Julian Calendar
  • 2865 is June 1, 1969
Serial Number: 0001

       
  • A sequential number for each days
    production beginning with 0001

Matching Numbers?
 
[/t][/t][/t]
  On 1968 and later engines the numbers stamped on the lower rail of the engines right (passenger) side match the last 8 digits of the cars vehicle identification number. This confirms that this is the original engine. The matching numbers add to the cars value. 
Engine Block Casting # and Date Code
 
  [/t][/t][/t]
  The date code and block casting numbers are found on the left side of the block. This block bears the casting # 2536430. The following chart identifies it as a 66 - 72 440 block. The casting date of 2-26-69 indicates that this is a '69 block.
B / RB Engine Block Casting #'s 

Casting #
Application
Type
Engine

1944929
Chrysler - Dodge - Plymouth
  B
58 350

1737629
Chrysler - Dodge - Plymouth
  B
61-64 361

2205712
Chrysler - Dodge - Plymouth
  B
58-66 361

1851729
Chrysler - Dodge - Plymouth
  B
59-64 383

2120329
Chrysler - Dodge - Plymouth
  B
59-64 383

2468130
Chrysler - Dodge - Plymouth
  B
59-71 383

3614230
  Best 400 Block - Heavy  Main Webs
  B
71-72 400

3698630
Chrysler - Dodge - Plymouth
  B
73-78 400

1852029
  High Performance & Truck
  RB
62-413

2120529
Chrysler - Dodge - Plymouth
  RB
59-65 413

2205697
Chrysler - Dodge - Plymouth
  RB
59-65 413

2205697
Chrysler - Dodge - Plymouth
  RB
64-426

2406730
  Max Wedge
  RB
63-65 426

2532230
  Max Wedge
  RB
64-66 426

2658836
Industrial
RB

2536430
Chrysler - Dodge - Plymouth
  RB
66-72 440

3698330
Chrysler - Dodge - Plymouth
  RB
73-78 440

4006530
Chrysler - Dodge - Plymouth
  B
76-78 400

4006630
Chrysler - Dodge - Plymouth
  RB
78 440

 
 
Big Block Cylinder Heads

Since 1958 there have been 14 different head castings. All B/RB heads interchange which makes swapping easy. However, swapping the '62 to '64 Max Wedge heads onto a "B" engine isn't recommended because there are no intake manifolds available for that combination.
The '67 440 and '68 to '70 383 and 440 4-barrel heads are considered the best factory heads. The '67 heads have a smaller "closed" combustion chamber and can be used to increase the compression ratio on later model low compression engines. Care must also be taken when swapping the '67 heads onto the '68-'69 383 due to the lack of piston to chamber clearance. The 383  has a positive deck height. (the piston protrudes above the  block deck surface) The deck height has to be at or below the deck surface to provide the necessary clearance.
   
Location of Cylinder Head Casting #'s
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The casting numbers for Mopar Big Block cylinder heads can be found on the underside of the head on an intake runner. (upper photo)
 The casting number can also be found under the valve cover on an intake runner. (lower photo)
[/t][/t]     
   
Big Block Cylinder Head Part #'s
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[/t]
 

Casting#
Part#

Engine
Chamber
In
Ex

1737637
1944705
2128533

58-59 361
Closed
1.94
1.60

1737637
2448752

60 361/383
Closed
1.94
1.60

2206324
2206924
2128589
61-62 361/383/413
Closed
2.08
1.60

2402286
2402358
62 413 Max Wedge
Closed
2.08
1.88

2463209
2406754
63 426 Max Wedge
Closed
2.08
1.88

2463200
2448752
63 361/383/413
Closed
2.08
1.60

2406518
2406736
64 426 Max Wedge
Closed
2.08
1.88

2406516
2406732
64-67 361/383
Closed
2.08
1.60

2406158
2806019
67 440
Closed
2.08
1.60

2780915
2800762
67 440 HP
Closed
2.08
1.74

2843906
2843904
68-70 383/440
Open
2.08
1.74

2951250
2843904
68 440
Open
2.08
1.74

3462346
3462344
71-72 383/400/440
Open
2.08
1.74

3462346
3671640
73 400/440
Open
2.08
1.74

3751213
3751218
73 400/440
Motor Home
Open
2.08
1.74

3769902
3769910

74 400/440
Open
2.08
1.74

3769975
3769954

75 400/440
Open
2.08
1.74

4006452
3769954

76-78 400/440
Open
2.08
1.74
Pre '64 heads are easily identify because they use only 4 valvecover bolts.
 
   
Big Block Mopar Crankshafts
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[/t][/t]
 
Chrysler's "B" and "RB" engine crankshafts have two basic stroke dimensions. The "B" engine crankshaft uses a 3.380 inch stroke and the "RB" engine uses a 3.750 inch stroke. Main journal size also differs between the "B" and "RB" engines. The "B" engine uses a 2.625 inch main journals, the "RB" uses  2.750 journals. Both engines share the same 2.380 inch rod journals. All early crankshafts are steel forgings. In 1971 Chrysler used a cast crank in low performance 383 engines. The use of cast iron crankshafts in 440's began in 1972. All cast cranks and certain forged steel cranks are externally balanced. These require the use of specially balanced harmonic dampeners, torque converters and flywheels. The appropriate components  must be used to ensure that the reciprocating assembly is in balance. If an internally balanced crank is used with an external balanced converter or dampener (or vise- versa) a severe out of balance condition  will occur. Externally balanced crankshafts can be internally balanced by adding a heavy metal called Mallory metal to the crank throws. 440's equipped with 3x2 barrel carbs were also externally balanced to compensate for heavier rods. They require the use of externally balanced dampeners and converters or flywheels.
 
Big Block Mopar Crankshaft Part #'s
[/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t]

 

Part#
Engine
Material
Comments

2268114
383 4BBL
Forged

3462922
383 / 400 2BBL
Cast
Externally Balanced

3672000
400 4BBL
Cast
Premium Cast Crank
Suitable for mild hop-ups

2536983
67-71  440 4BBL
Forged
A good general crankshaft

3512036
70-72 440 6BBL
Forged
Externally balanced
premium crank

3671283
72-73 440 4BBL
Forged
A good general crankshaft

3671242
73 440 4BBL
Forged
Balanced for different
weight pistons

3751889
74 440 2&4 BBL
Cast
Externally balanced

3751899
74 440 HiPo
Forged
A good general crankshaft

2406240
413/426 Max Wedge
Forged
Best RB crankshaft
Big Block Crankshafts Dampers

 
 
Part#Application
26584571958-1971 All B & RB engines
35120171970-1971 440 6BBL and '71 440 High Performance
35771801971 383 2 barrel (cast crank)
36143711972-1973 400 Forged Crank
36143741972-1973 400 Cast Crank
36143711972-1973 440 Standard Performance
36143721972-1973 440 High Performance
35777851974 440 Cast Crank
[/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t]
   
72 and up B&RB dampers use a different pulley bolt pattern.
[/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t][/t]
Degree your damper

A degreed damper is useful for setting total spark advance and for valve lash adjustments when using a solid lifter camshaft. All Mopar crankshaft dampers have the same 7.25 inch diameter. You can mark your damper with a self adhesive timing tape or mark it yourself using the following dimensions.

Mark your damper in the direction of rotation (1/16 inch = 1°)

 
Degrees[/t][/t][/t]
Distance
Purpose

28°
1 3/4"
Setting Total Advance

30°
1 7/8"

32°
2"

34°
2 1/8"

36°
2 1/4"

38°
2 3/8"

40°
2 1/2"

42°
2 5/8"

103°
6 1/2"
Setting Cam Centerline

105°
6 5/8"

107°
6 3/4"

109°
6 7/8"

111°
7"

180°
11 3/8"
Setting Valve Lash
   
Big Block Connecting Rods
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[/t]
 
The connecting rods used in B and RB engines are of a typical I-Beam design. Other design features include pressed fit wrist pins and 3/8 inch cap bolts. Dimensions of the "B" and "RB" rods are similar with the exception of the center to center length. the RB rods are .410 inches longer. The rods have nearly the same cross-sectional area and use the same rod bolts but the b engine rod is capable of higher rpm abuse because a shorter beam area can tolerate greater loads. The shorter beam area and the reduced loads  of the B engines shorter stroke allow reliable operation in the 6500-7000 rpm range for stock rods. Due to higher loads induced by longer rods and crankshaft stroke, the RB rod should be limited to 6000-6200 rpm
   
   
Big Block Connecting Rod Part #'s
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[/t]

Part #
Engine
Length

2406766
64-71 383
64-66 361
72-74 400
6.358

2406770
62-64 413
62-64 426 Wedge
68-69 440 4BBL
70-74 Except High Performance
6.768

3462426
69 440 3x2 BBL
6.768

2951906
70-74 440 High Performance
70-72 440 3x2 BBL
6.768

B Engine Intake Manifolds



Engine
Year
Comments
Casting #

383 2x4
59-61
1827899

383 4bbl
60-67
2205968

383 4bbl
68-69
2806301

383 4bbl
70-71
2951666

400 4bbl
72
3614046

400 4bbl
73
3671879

400 4bbl
74
3698442

400 4bbl
75-76
3830949

413 4bbl
59-65
2206000

413 2x4
59
300E
2264877

413 2x4
62
300H
2266487

413 2x4
62
Max Wedge / Aluminum
2402726

413 2x4
63-64
Crossram / Left
2421369

413 2x4
63-64
Crossram / Right
2421368

413 2x4
63-64
Crossram / 300J-300K Left
2129987

413 2x4
63-64
Crossram / 300J-300K Right
2129985

413 2x4
63
Max Wedge Stage ll Aluminum
2402728

413 2x4
64
Max Wedge Stage lll
2402720

RB Engine Intake Manifolds



Engine
Year
Comments
Casting #

426 2x4
65
Max Wedge / Aluminum
2406185

426 2x4
64
Max Wedge / Aluminum
2465165

426 Hemi
66-71
Street Hemi
2780543

440 4bbl
66
2206000

440 4bbl
67-69
2806178

440 4bbl
70-71
2951736

440 4bbl
71
3512501

440 4bbl
71-72
3614014

440 4bbl
73
3698444

440 4bbl
74
3751721
3830733

440 4bbl
75-76
3830733

440 3x2
69
Aluminum
3412046

440 3x2
70
Aluminum
3418681

440 3x2
70-72
Iron
2946275
2946276

B&RB Engine Exhaust Manifolds



Engine
Year
Comments
Casting #

350-361
58
Right
2205535

350-361
58
Left
2205536

361
59
Right
1739599

361
59
Left
2205536

361
60-64
Right
2205535

361
60-64
Left
2205536

383
59
Right
1739599
2205535

383
59
Left
2205536

383
60-64
Right
2205535

383
60-64
Left
2205536

383
65
Right
2205535

383
65
Left
2461307

383
66-69
Right
2532464

383
66-69
Left
2461307

383
68-69
Cuda & Dart / Right
2863000

383
68-
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