72
CRANKSHAFTS
www.kcenginepro.com
ROTATING ASSEMBLIES
NEW CRANKSHAFTS
XXX = Bore Size.
CAST STEEL CRANKSHAFTS
Order size as:
000, 020, 030, 040, 060
Part #
Engine
Stroke Seal & Balance
11011
Chevrolet
Part #
Cu. In. Stroke
Description
Compression Ratio
103503480
350
3.48
2-pc, internal
103503480CM 350
3.480"
2 pc, IMCA legal, no holes, .125" radii
SB Chevy
64CC 76CC
103503750
*350-383
3.75
2-pc, external
12020xxx
357 3.500"
SRP flat top, 6.0" rod
10.3
9
104003750
*400
3.75
2-pc, external
12007xxx
383 3.750"
SRP inv. dome, 5.7" rod
9.8
8.7
103523750
*350-383
3.75
1-pc, external
12075xxx
383 3.750"
Mahle -5cc flat top, 3.750" rod 10.5
9.3
104544000
454
4.00
2-pc, external
12008xxx
383 3.750"
Mahle flat top, 5.7" rod
11
9.7
12503xxx
406 3.750"
SRP flat top, 6.0" rod
11.6
10.2
Ford
BB Chevy
112CC 118CC
103023250
302-331
3.25
NA, external
11012xxx
489 4.250"
Mahle +18cc dome , 6.385" rod 10.7
10.2
103023400
302-347
3.40
NA, external
11013xxx
489 4.250"
Mahle +43cc dome , 6.385" rod 13.8
12.7
104604140
460-501-514 4.14
NA, internal
11011xxx
489 4.250"
SRP flat top, 6.385" rod
9.5
9.1
Pontiac
11614xxx
540 4.250"
SRP 10CC-dome, 6.385" rod
10.8
10.3
104004250
400-461
4.25
(6.625" Pontiac rod)
SB Chrysler
60CC 70CC
104554210
455
4.21
(6.625" Pontiac rod)
20102xxx
408 4.000"
SRP inv. dome, 6.123" rod
10.7
9.7
104554250
455-468
4.25
(6.800", 2.200" rod)
BB Chrysler
72CC 84CC
* 5.7 connecting rods or longer
BO
21201xxx
493 4.150"
SRP flat top, 6.670" rod
12.4
11.1
Cast steel cranks are available for many more applications!
TT
SB Ford
58CC 64CC
OM
14006xxx
332 3.250"
SRP flat top, 5.40" rod
10.1
9.4
FORGED 4340 STEEL CRANKSHAFTS
14003xxx
347 3.400"
SRP flat top, 5.40" rod
10.8
10
END
14004xxx
347 3.400"
SRP inv. dome, 5.40" rod
9.9
9.3
Part #
Engine
Stroke
Seal, Rod
14121xxx
383W 3.750"
SRP inv. dome, 6.250" rod
8.9
8.5
SB Chevrolet
14124xxx
408W 4.000"
SRP inv. dome, 6.200" rod
9.8
9.3
435034805700
350
3.48
2-pc, 5.700
43053480SPRINT 350
3.48
2 pc, round rear flange
BB Ford
72CC 84CC
435034805700
350
3.48
2-pc, 5.700
15011xxx
521 4.300"
Mahle flat top, 6.8" rod
12.9
11.5
435037505700
350-383
3.75
2-pc, 5.700
435337505700
350-383
3.75
1-pc, 5.700
BALANCED ROTATING ASSEMBLIES
435036255700
350-362
3.625
2-pc, 5.700
440034805700
400-377
3.48
2-pc, 5.700
434636226100
LS1
3.62
1-pc, 6.100
434639006100
LS1
3.90
1-pc, 6.100
434640006100
LS1
4.00
1-pc, 6.100
440037505700
400
3.75
2-pc, 5.700
440038756000
400-421
3.85
2-pc, 6.000
XXX = Bore Size. Order size as:
440040006000
400-434
4.00
2-pc, 6.000
000, 020, 030, 040, 060
BB Chevrolet
445440026135
454
4.00
2-pc, 6.135
B13004E balanced
4454425263851
454-489
4.25
2-pc, 6.385
BALANCED STREET ROTATING ASSEMBLIES
445442546385
454-489
4.25
2-pc, 6.385
Part #
Cu. In. Stroke
Description
Compression Ratio
Ford
SB Chevy Internally Balanced
64CC 76CC
430234005400
302-347
3.40
na, 5.400
B13403Exxx 355 3.480"
-10CC inv. Dome, 5.7" rod
9.3
8.3
430232505400
302-331
3.25
na, 5.400
B13402Exxx 355 3.480"
Flat top, 5.7" rod
9.8
8.7
435140006200
351W-408
4.00
na, 6.200
B13454Exxx 383 3.750"
-12CC inv. Dome, 5.7" rod
9.9
8.8
Chrysler
B13455Exxx 383 3.750"
Flat top, 5.7" rod
10.7
9.4
444237506760
2
440
3.752
na, 6.760
SB Chevy Externally Balanced
w/ flexplate & balancer
64CC 76CC
444241506760
2
440-499
4.152
na, 6.760
B13404Exxx 383 3.750"
-12CC inv. Dome, 5.7" rod
9.9
8.8
Notes: 1. Center Counter Weight 2. 8-Bolt Flange
B13405Exxx 383 3.750"
Flat top, 5.7" rod
10.7
9.4
BB Chevy Externally Balanced
w/ flexplate & balancer
112CC 118CC
B18400xxx
454 4.00"
Flat top, 6.135" rod
8.4
8.1
B18401xxx
454 4.00"
22CC dome, 6.135" rod
10.1
9.6
CRANK SEAL ADAPTERS
BALANCED STREET & STRIP ROTATING ASSEMBLIES
Adapts 2-piece rear main seal cranks to late style
Part #
Seal
Description
Compression Ratio
1-piece rear seal blocks.
383 Chevy
64CC 76CC
Precision machined billet aluminum.
B13004Exxx
2-piece
KB -18CC inv. dome, 5.7" rod
9.7
8.7
Part #
Application
B13004Lxxx-53
1-piece
KB -18CC inv. dome, 5.7" rod
9.7
8.7
RSH349
SB Chevy with early style pan
B13005Exxx
2-piece
KB Flat top, 5.7" rod
10.9
9.6
RSH350
SB Chevy with late style pan
500
BB Chevy-use late style oil pan
72
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