American V8 Engine 4340 Forged Steel Crankshaft Specs (Billet cranks are noted as such in the Description and Notes) |
| Stroke |
Description and Notes |
Rod Pin Dia. |
Main Journal Size |
Min
Rod
Length |
Bob
Weight |
Part # and Price |
SBC CHEVY
All small block Chevy cranks listed here are 2 piece rear seal type unless noted as being for a one piece seal in the description column. One piece rear seal cranks will also have OPS included in the part number. |
| 3.480 |
3.480 Stroke 50 pound Legal with rounded leading and trailing counterweight edges 50 pound Late Model Stock Legal |
2.100 |
350 |
5.700 |
1500 |
350-3480BB6F-RN
|
| 3.480 |
3.480 Stroke |
2.100 |
350 |
5.700 |
1875 |
350-3480BB6F-57
|
| 3.500 |
3.500 Stroke with big block snout and Honda journal |
1.888 (Honda journal) |
283 / 327 |
6.000 |
1675 |
283-3500AD6F-60
Discontinued, no longer available |
| 3.500 |
3.500 Stroke |
2.100 |
350 |
6.000 |
1825 |
350-3500BB6F-60
|
| 3.562 |
3.562 stroke with Honda journal |
1.888 (Honda journal) |
350 |
6.000 |
1800 |
350-3562BD6F-60
Out of stock, Discontinued by Manufacturer |
| 3.625 |
3.625 Stroke |
2.100 |
350 |
5.700 |
1800 |
350-3625BB6F-57
Out of stock, Discontinued by Manufacturer |
| 3.750 |
3.750 Stroke |
2.100 |
350 |
5.700 |
1800 |
350-3750BB6F-57
|
| 3.750 |
3.750 Stroke |
2.100 |
350 |
6.000 |
1800 |
350-3750BB6F-60
|
| 3.750 |
One piece rear main seal |
2.100 |
350 |
5.700 |
1800 |
350-3750BB6F-OPS-57
|
| 3.750 |
3.750 stroke 400 main journals |
2.100 |
400 |
5.850 |
1850 |
400-3750CB6F-585
|
| 3.800 |
|
2.100 |
350 |
5.700 |
1800 |
350-3800BB6F-57
|
| 3.875 |
|
2.100 |
350 |
5.700 |
1800 |
350-3875BB6F-57
|
| 3.875 |
3.875 stroke with 400 main journals |
2.100 |
400 |
5.850 |
1850 |
400-3875CB6F-585
|
| 4.000 |
|
2.100 |
350 |
5.850 |
1850 |
350-4000BB6F-585
|
| 4.000 |
|
2.100 |
350 |
6.000 |
1850 |
350-4000BB6F-60
|
| 4.000 |
4.000 stroke with 400 main journals |
2.100 |
400 |
5.850 |
1850 |
400-4000CB6F-585
|
| 4.125 |
4.125 stroke with 400 main journals for 6.000 or longer rod |
2.100 |
400 |
6.000 |
1850 |
400-4125CB6F-60
|
SBC CHEVY LIGHTWEIGHT CRANKS |
| Stroke |
Description and Notes |
Rod Pin Dia. |
Main Journal Size |
Min
Rod
Length |
Bob
Weight |
Part # and Price |
| 3.350 |
3.350 Lightweight, Honda journal, 283 Mains |
1.888 (Honda journal) |
283 |
6.000 |
1750 |
283-3350AD6L-60
|
| 3.350 |
3.350 Lightweight, Honda journal, 350 Mains |
1.888 (Honda journal) |
350 |
6.000 |
1650 |
350-3350BD6L-60
|
| 3.480 |
3.480 Lightweight, one piece rear seal |
2.100 |
350 |
5.700 |
1800 |
350-3480BB6L-OPS-57
|
| 3.500 |
3.500 Lightweight, 2.000 small journal |
2.000 |
350 |
6.000 |
1750 |
350-3500BA6L-60
|
| 3.500 |
3.500 Lightweight |
2.100 |
350 |
5.700 |
1750 |
350-3500BB6L-57
|
| 3.500 |
3.500 Lightweight |
2.100 |
350 |
6.000 |
1750 |
350-3500BB6L-60
|
| 3.750 |
3.750 Lightweight |
2.100 |
350 |
5.700 |
1750 |
350-3750BB6L-57
|
| 3.750 |
3.750 Lightweight |
2.100 |
350 |
6.000 |
1750 |
350-3750BB6L-60
|
| 3.875 |
3.875 Lightweight |
2.100 |
350 |
6.000 |
1750 |
350-3875BB6L-60
|
CHEVY LS Cranks |
| Stroke |
Description and Notes |
Rod Pin Dia. |
Main Journal Size |
Min
Rod
Length |
Bob
Weight |
Part # and Price |
| 3.622 |
3.622 stock stroke LS Crank
with 24 tooth ring |
2.100 |
LS |
6.125 |
1800 |
346-3622LB6F-610-24
|
| 3.622 |
3.622 stock stroke LS Crank
with 58 tooth ring |
2.100 |
LS |
6.125 |
1800 |
346-3622LB6F-610-58
|
| 3.622 |
Extra Heavy Duty LS billet steel 8 counterweight crank
3.622 stroke LS Billet Crank
for use in brutal high output applications with 24 tooth ring
Note: 8 counterweight cranks are also referred to as fully counterweighted or center counter weighted. |
2.100 |
LS |
6.125 |
1750 |
346-3622LB8B-24
|
| 3.622 |
Extra Heavy Duty LS billet steel 8 counterweight crank
3.622 stroke LS Billet Crank
for use in brutal high output applications with 58 tooth ring
Note: 8 counterweight cranks are also referred to as fully counterweighted or center counter weighted. |
2.100 |
LS |
6.125 |
1750 |
346-3622LB8B-58
|
| 3.750 |
3.750 LS stroker crank
with 24 tooth ring |
2.100 |
LS |
6.125 |
1800 |
346-3750LB6F-610-24
|
| 3.750 |
3.750 LS stroker crank
with 58 tooth ring |
2.100 |
LS |
6.125 |
1800 |
346-3750LB6F-610-58
|
| 3.900 |
3.900 LS stroker crank with 24 tooth ring |
2.100 |
LS |
6.125 |
1800 |
346-3900LB6F-610-24
|
| 3.900 |
3.900 LS stroker crank
with 58 tooth ring |
2.100 |
LS |
6.125 |
1800 |
346-3900LB6F-610-58
|
| 4.000 |
4.000 LS stroker crank
with 24 tooth ring |
2.100 |
LS |
6.125 |
1800 |
346-4000LB6F-610-24
|
| 4.000 |
4.000 LS stroker crank
with 58 tooth ring |
2.100 |
LS |
6.125 |
1800 |
346-4000LB6F-610 58
|
| 4.000 |
Extra Heavy Duty LS billet steel 8 counterweight crank
4.000 stroke LS Billet Crank
for use in brutal high output applications with 24 tooth ring
Note: 8 counterweight cranks are also referred to as fully counterweighted or center counter weighted. |
2.100 |
LS |
6.125 |
1750 |
346-4000LB8B-24
|
| 4.000 |
Extra Heavy Duty LS billet steel 8 counterweight crank
4.000 stroke LS Billet Crank
for use in brutal high output applications with 58 tooth ring
Note: 8 counterweight cranks are also referred to as fully counterweighted or center counter weighted. |
2.100 |
LS |
6.125 |
1750 |
346-4000LB8B-58
|
| 4.125 |
4.125 LS stroker crank with 24 tooth ring |
2.100 |
LS |
6.125 |
1800 |
346-4125LB6F-610 24
|
| 4.125 |
4.125 LS stroker crank
with 58 tooth ring |
2.100 |
LS |
6.125 |
1800 |
346-4125LB6F-610 58
|
| 4.250 |
4.250 LS stroker crank
with 24 tooth ring |
2.100 |
LS |
6.125 |
1800 |
346-4250LB6F-610 24
|
| 4.250 |
4.250 LS stroker crank
with 58 tooth ring |
2.100 |
LS |
6.125 |
1800 |
346-4250LB6F-610 58
|
Chevrolet LS7 Long Snout |
| 4.000 |
4.000 Stroke LS7 long snout crank
with 58 tooth ring |
2.100 |
LS |
6.100 |
1800 |
346-4000LB6F-LS7 58
|
| 4.100 |
4.100 Stroke LS7 long snout crank
with 58 tooth ring |
2.100 |
LS |
6.100 |
1800 |
346-4100LB6F-LS7 58
|
Big Block Chevy Cranks BBC |
| Stroke |
Description and Notes |
Rod Pin Dia. |
Main Journal Size |
Min
Rod
Length |
Bob
Weight |
Part # and Price |
| 4.000 |
4.000 Stroke 6 counterweight |
2.200 |
454 |
6.135 |
2200 |
454-4000DC6F-6135
|
| 4.000 |
4.000 Stroke 6 counterweight, One piece rear seal |
2.200 |
454 |
6.135 |
2200 |
454-4000DC6F-OPS-6135
|
| 4.250 |
4.250 Stroke 6 counterweight |
2.200 |
454 |
6.135 |
2200 |
454-4250DC6F-6135
|
| 4.250 |
4.250 Stroke 6 counterweight |
2.200 |
454 |
6.385 |
2200 |
454-4250DC6F-6385
|
| 4.250 |
4.250 Stroke 6 counterweight, One piece rear seal |
2.200 |
454 |
6.385 |
2300 |
454-4250DC6F-OPS-6385
|
| 4.250 |
4.250 Stroke 8 counterweight |
2.200 |
454 |
6.385 |
2300 |
454-4250DC8F-6385
|
| 4.375 |
4.375 Stroke 8 counterweight |
2.200 |
454 |
6.385 |
2300 |
454-4375DC8F-6385
|
| 4.375 |
4.375 Stroke 8 counterweight, One piece rear seal |
2.200 |
454 |
6.385 |
2150 |
454-4375DC8F-OPS-6385
|
| 4.500 |
4.500 Stroke 6 counterweight |
2.200 |
454 |
6.535 |
2300 |
454-4500DC6F-6535
Discontinued |
| 4.500 |
4.500 Stroke 8 counterweight |
2.200 |
454 |
6.535 |
2300 |
454-4500DC8F-6535
|
| 4.750 |
4.750 Stroke 8 counterweight 6.600 min rod length |
2.200 |
454 |
6.600 |
2250 |
454-4750DC8F-660
|
| 4.750 |
4.750 Stroke 8 counterweight 6.700 min rod length |
2.200 |
454 |
6.700 |
2300 |
454-4750DC8F-670
|
| |
SBM 318 340 Mopar Chrysler Dodge Plymouth |
| Stroke |
Description and Notes |
Rod Pin Dia. |
Main Journal Size |
Min
Rod
Length |
Bob
Weight |
Part # and Price |
| 3.580 |
3.580 Stroke with Chevy
2.100 Rod Pins |
2.100 |
318 340 |
6.123 |
1850 |
340-3580EB6F
|
| 3.580 |
3.580 Stroke with stock Mopar Rod Pins |
2.125 |
318 340 |
6.123 |
1850 |
340-3580EF6F
|
| 3.790 |
3.790 Stroke with Chevy
2.100 Rod Pins |
2.100 |
318 340 |
6.123 |
1850 |
340-3790EB6F
|
| 4.000 |
4.000 Stroke with Chevy
2.100 Rod Pins |
2.100 |
318 340 |
6.123 |
1850 |
340-4000EB6F
|
| 4.000 |
4.000 Stroke with standard small block Mopar rod pins |
2.125 |
318 340 |
6.123 |
1850 |
340-4000EF6F
|
| 4.125 |
4.125 Stroke 340 main journals with 2.000 small block chevy, small journal rod pins |
2.000 |
318 340 |
6.123 |
1850 |
340-4125EA6F
|
| 4.180 |
4.180 stroke with Honda 1.889 rod pins. Use with Molnar Technologies connecting rod molDH6123GKB8
NOTE: This 4.180 stroke crank is NOT recommended for use with boost or nitrous. |
1.889 (Honda size) |
318 340 |
6.123 |
1900 |
340-4180ED6F
|
SBM 360 Mopar Chrysler Dodge Plymouth |
| 3.790 |
3.790 Stroke with Chevy
2.100 Rod Pins |
2.100 |
360 |
6.123 |
1850 |
360-3790FB6F
|
| 4.000 |
360 Chrysler main journals and 4.000 Stroke with standard small block Mopar rod pins |
2.125 |
360 |
6.123 |
1850 |
360-4000FF6F
|
| 4.125 |
4.125 Stroke 360 main journals with 2.000 small block chevy, small journal rod pins |
2.000 |
360 |
6.123 |
1800 |
360-4125FA6F
|
| 4.180 |
Mopar 360 main journal 4.180 stroke crank with Honda 1.889 rod pins. Use with Molnar Technologies connecting rod molDH6123GKB8
NOTE: This 4.180 stroke crank is NOT recommended for use with boost or nitrous. |
1.889 (Honda size) |
360 |
6.123 |
1800 |
360-4180FD6F
|
Chrysler Dodge EFI Gen3 HEMI Cranks |
| Stroke |
Description and Notes |
Rod Pin Dia. |
Main Journal Size |
Min
Rod
Length |
Bob
Weight |
Part # and Price |
| 3.580 |
5.7 Hemi stock stroke and stock rod pin diameter |
2.125 |
Stock 2.559 |
6.125 |
1700 |
345-3580JF6F
|
| 3.593 |
Chrysler Drag Pack Hemi Crank
with 2.100 rod pins (**NHRA Approved**) |
2.100 |
Stock 2.559 |
6.000 |
1700 |
345-3593JB6F
|
| 3.795 |
3.795 stroke with 2.100 Rod Pins (**NHRA Approved**) |
2.100 |
Stock 2.559 |
6.000 |
1700 |
345-3795JB6F
|
| 3.893 |
3.893 inch stroke with 2.100 inch diameter rod pins |
2.100 |
Stock 2.559 |
6.000 |
1700 |
345-3893JB6F
Sold out, Discontinued |
| 3.900 |
3.900 stroke with 2.000 rod pins |
2.000 |
Stock 2.559 |
6.125 |
1700 |
345-3900JA6F
|
| 3.900 |
3.900 stroke with 2.100 rod pins |
2.100 |
Stock 2.559 |
6.125 |
1700 |
345-3900JB6F
|
| 3.900 |
Extra Heavy Duty billet steel crank with 8 counterweights
3.900 stroke with 2.100 rod pins for use in brutal high output applications. |
2.100 |
Stock 2.559 |
6.125 |
1750 |
345-3900JB8B
|
| 4.000 |
4.000 stroke with 2.100 rod pins |
2.100 |
Stock 2.559 |
6.125 |
1700 |
345-4000JB6F
|
| 4.050 |
4.050 stroke with 2.000 rod pins |
2.000 |
Stock 2.559 |
6.125 |
1700 |
345-4050JA6F
|
| 4.050 |
Extra Heavy Duty billet steel crank with 8 counterweights
2.100 rod pins for use in brutal high output applications. |
2.100 |
Stock 2.559 |
6.125 |
1750 |
345-4050JB8B
|
| 4.080 |
4.080 stroke with 2.000 rod pins |
2.000 |
Stock 2.559 |
6.125 |
1700 |
345-4080JA6F
|
| 4.250 |
4.250 stroke with 2.000 rod pins
NOTE: This 4.250 stroke crank is NOT recommended for use with boost or nitrous. |
2.000 |
Stock 2.559 |
6.125 |
1700 |
345-4250JA6F
|
361 383 400 Mopar B Engine Stroker Cranks |
| 3.910 |
3.910 stroke 6 Bolt Flange |
2.200 |
361 383 400 |
6.450 |
2300 |
383-3910NC6F
|
| 4.150 |
4.150 stroke 6 Bolt Flange |
2.200 |
361 383 400 |
6.450 |
2300 |
383-4150NC6F
|
| 4.250 |
4.250 stroker 6 Bolt Flange |
2.200 |
361 383 400 |
6.500 |
2300 |
383-4250NC6F
|
BIG BLOCK MOPAR 413 426 Wedge 426 Hemi 440 RB Engine Crankshafts |
| Stroke |
Description and Notes |
Rod Pin Dia. |
Main Journal Size |
Min
Rod
Length |
Bob
Weight |
Part # and Price |
| 3.750 |
6 Bolt Flange |
2.375 |
413 426W 426 Hemi and 440 |
6.760 |
2350 |
440-3750ME6F
|
| 3.750 |
8 Bolt Flange |
2.200 |
413 426W 426 Hemi and 440 |
6.760 |
2350 |
426-3750MC6F
|
| 3.750 |
8 Bolt Flange |
2.375 |
413 426W 426 Hemi and 440 |
6.760 |
2350 |
426-3750ME6F
|
| 4.150 |
6 Bolt Flange |
2.200 |
413 426W 426 Hemi and 440 |
6.760 |
2350 |
440-4150MC6F
|
| 4.150 |
6 Bolt Flange |
2.375 |
413 426W 426 Hemi and 440 |
6.760 |
2350 |
440-4150ME6F
|
| 4.150 |
8 Bolt Flange |
2.200 |
413 426W 426 Hemi and 440 |
6.760 |
2350 |
426-4150MC6F
|
| 4.150 |
8 Bolt Flange |
2.375 |
413 426W 426 Hemi and 440 |
6.760 |
2350 |
426-4150ME6F
|
| 4.250 |
6 Bolt Flange |
2.200 |
413 426W 426 Hemi and 440 |
6.760 |
2350 |
440-4250MC6F
|
| 4.250 |
8 Bolt Flange |
2.200 |
413 426W 426 Hemi and 440 |
6.760 |
2350 |
426-4250MC6F
|
| 4.375 |
8 Bolt Flange |
2.200 |
413 426W 426 Hemi and 440 |
6.760 |
2350 |
426-4375MC6F
|
| 4.500 |
8 Bolt Flange |
2.200 |
413 426W 426 Hemi and 440 |
6.760 |
2350 |
426-4500MC6F
|
FORD 302 |
| Stroke |
Description and Notes |
Rod Pin Dia. |
Main Journal Size |
Min
Rod
Length |
Bob
Weight |
Part # and Price |
| 3.250 |
302 Ford with 302 width rod pins, 3.250 stroker crank |
2.100 |
302 |
5.400 |
1750 |
302-3250GB6F
|
| 3.400 |
302 Ford with 302 width rod pins, 3.400 stroker crank |
2.100 |
302 |
5.400 |
1750 |
302-3400GB6F
|
FORD 351 Windsor and 351 Cleveland |
| 3.500 |
351 Ford with 2.100 small block Chevy size rod pins |
2.100 |
351 Cleveland |
6.000 |
1800 |
351-3500HB6F-60
|
| 3.500 |
50 pound Ford Late Model Stock
50 pound Legal with rounded leading and trailing counterweight edges |
2.100 |
351 Cleveland |
6.000 |
1600 |
351-3500HB6F-RN
|
| 3.750 |
351 Ford with 2.100 small block Chevy size rod pins |
2.100 |
351 Cleveland |
6.000 |
1900 |
351-3750HB6F-60
|
| 3.850 |
351 Ford with 2.100 small block Chevy size rod pins |
2.100 |
351 Cleveland |
6.000 |
1900 |
351-3850HB6F-60
|
| 4.000 |
351 Ford with 2.100 small block Chevy size rod pins |
2.100 |
351 Cleveland |
6.000 |
1900 |
351-4000HB6F-60
|
| 4.000 |
351 Ford with 2.100 small block Chevy size rod pins |
2.100 |
351 Cleveland |
6.200 |
1900 |
351-4000HB6F-62
|
| 4.000 |
Extra Heavy Duty billet steel 8 counterweight 351 Ford stroker crank
4.000 stroke Billet Crankwith 2.100
Chevy size rod pins for use in very high output applications
Note: 8 counterweight cranks are also referred to as fully counterweighted or center counter weighted. |
2.100 |
351 Cleveland |
6.200 |
1950 |
351-4000HB8B-62
|
| 4.000 |
351 Windsor 4.000 stroker with 2.100 small block Chevy size rod pins |
2.100 |
351 Windsor |
6.200 |
1900 |
351-4000KB6F-62
|
| 4.100 |
351 Windsor 4.100 stroker with 2.100 small block Chevy size rod pins |
2.100 |
351 Windsor |
6.200 |
1900 |
351-4100KB6F-62
|
| 4.250 |
351 Ford 4.250 stroke with 2.100 small block Chevy size rod pins |
2.100 |
351 Cleveland |
6.200 |
1850 |
351-4250HB6F-62
|
FORD Big Block 429 and 460 | 385 Series Engines |
| 4.300 |
429 and 460 Ford with 2.200 big block Chevy size rod pins |
2.200 |
460 |
6.700 |
2300 |
460-4300PC6F
|
| 4.500 |
429 and 460 Ford with 2.200 big block Chevy size rod pins |
2.200 |
460 |
6.700 |
2300 |
460-4500PC6F
|
| 4.600 |
429 and 460 Ford with 2.200 big block Chevy size rod pins |
2.200 |
460 |
6.700 |
2300 |
460-4600PC6F
|
FORD 4.6 MODULAR |
| 3.543 |
Extreme Duty 4.6 Billet Crank Stock Stroke 3.543
8 counterweight billet steel crank with full fillet bearing journals. Bearings will need to be narrowed or chamfered to clear the fillets.
8 counterweight cranks are also referred to as fully counterweighted or center counter weighted. |
Stock 4.6
2.086 |
Stock 4.6
2.657 |
5.933 |
1780 |
281-3543SJ8B
|
Pontiac 400 |
| Stroke |
Description and Notes |
Rod Pin Dia. |
Main Journal Size |
Min
Rod
Length |
Bob
Weight |
Part # and Price |
| 4.000 |
400 Pontiac with 2.200 Rod Pins |
2.200 |
400 |
6.625 |
2150 |
401-4000RC6F
|
| 4.000 |
400 Pontiac with stock Pontiac size 2.249 Rod Pins |
2.249 |
400 |
6.625 |
2150 |
401-4000RU6F
|
| 4.250 |
400 Pontiac with 2.200 Rod Pins |
2.200 |
400 |
6.625 |
2150 |
401-4250RC6F
|
| 4.375 |
400 Pontiac with 2.200 Rod Pins |
2.200 |
400 |
6.625 |
2150 |
401-4375RC6F
|
| 4.500 |
400 Pontiac with 2.200 Rod Pins |
2.200 |
400 |
6.625 |
2150 |
401-4500RC6F
|
| 4.650 |
400 Pontiac with 2.200 Rod Pins |
2.200 |
400 |
6.625 |
2150 |
401-4650RC6F
|
| 4.650 |
400 Pontiac with stock Pontiac size 2.249 Rod Pins |
2.249 |
400 |
6.625 |
2150 |
401-4650RU6F
|
Pontiac 421 | Pontiac 455 Crankshafts |
| 4.000 |
421 and 455 Pontiac crankshaft with 2.200 rod pins |
2.200 |
421 / 455 |
6.625 |
2150 |
421-4000UC6F
|
| 4.000 |
421 and 455 Pontiac crankshaft with stock size 2.249 rod pins |
2.249 |
421 / 455 |
6.625 |
2150 |
421-4000UU6F
|
Sport Compact 4340 Steel Billet Cranks |
| Stroke |
Description |
Rod
Pin |
Main |
Min
Rod
Length |
Bob
Weight |
Part # |
MITSUBISHI Cranks Lightweight |
| 88mm |
Mitsubishi 4G63 Lightweight |
stock |
stock |
|
|
M8804G63-L
$1843.65 $1592.91
 |
|
| 94mm |
Mitsubishi 4G63 Lightweight |
stock |
stock |
|
|
M9404G63-L
$1843.65 $1592.91
|
|
| 97mm |
Mitsubishi 4G63 Lightweight |
stock |
stock |
|
|
M9704G63-L
$1843.65 $1592.91
|
|
| 100mm |
Mitsubishi 4G63
Lightweight |
stock |
stock |
|
|
M10004G63-L
$1843.65 $1592.91
|
|
SUBARU Cranks |
| All Molnar Technologies Subaru crankshafts are designed and machined to work with position 3 or position 5 thrust. They can be used in either thrust location engine block. |
| 75mm |
Subaru EJ20 and EJ25 |
stock |
stock |
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S750EJ20
$1792.43 $1548.66
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| 79mm |
Subaru EJ20 and EJ25 |
stock |
stock |
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S790EJ25
$1792.43 $1548.66
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| 83mm |
Subaru EJ20 and EJ25 |
stock |
stock |
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S830EJ25
$1792.43 $1548.66
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Item added to cart