We have a large assortment of sbc crankshaft models to choose from. We have stock stroke and several different sbc stroker crank lengths available for these popular V8 engines. We also have sbc lightweight crankshaft models in several sizes as well as a sbc crank with honda rod journals. Molnar Technologies superior crankshafts are extremely strong, precision machined high performance parts and can be used in everything from a high performance street car to an all out competition vehicle.
Check out the many premium features included with each Molnar small block Chevy crankshaft and order today to get started on your next engine project. Check out our selection of Molnar connecting rods also and get a set of rods that will be the perfect match for your new crankshaft.
Molnar SBC Crankshaft Features
- 4340 forged premium steel construction
- Nitrided main and rod journal surfaces for superior wear resistance
- Multi stage heat treatment
- Precision machined to extremely tight tolerances
- Material properties are monitored closely to insure optimum performance
- Counterweight placement designed for improved crankshaft performance
- .125" radius on both the connecting rod and main journals for increased strength
- Precision ground and micro-polished journals
- Chamfered oil holes for improved oiling
- Indexed for correct stroke
Molnar SBC Crankshaft List
4340 Forged Steel Small Block Chevy Crankshaft Specs
|
||||||
| Part # and Price | Stroke | Description and Notes | Pin | Main |
Min |
bob |
|---|---|---|---|---|---|---|
SBC Crankshafts |
||||||
|
350-3480BB6F-RN
|
3.480 |
50 pound Legal with rounded leading and trailing counterweight edges |
2.100 | 350 | 5.700 | 1500 |
|
350-3480BB6F-57
|
3.480 | 2.100 | 350 | 5.700 | 1875 | |
|
283-3500AD6F-60 Discontinued, no longer available |
3.500 | with big block snout and Honda rod journal | 1.888 | 283 / 327 | 6.000 | 1675 |
|
350-3500BB6F-60
|
3.500 | 2.100 | 350 | 6.000 | 1825 | |
|
350-3562BD6F-60 Out of stock, Discontinued |
3.562 | with Honda rod journal | 1.888 | 350 | 6.000 | 1800 |
|
350-3625BB6F-57 Out of stock, Discontinued |
3.625 | 2.100 | 350 | 5.700 | 1800 | |
|
350-3750BB6F-57
|
3.750 | 3.750" Stroke | 2.100 | 350 | 5.700 | 1800 |
|
350-3750BB6F-60
|
3.750 | 2.100 | 350 | 6.000 | 1800 | |
|
350-3750BB6F-OPS-57
|
3.750 | One piece rear main seal | 2.100 | 350 | 5.700 | 1800 |
|
400-3750CB6F-585
|
3.750 | 3.750 stroke 400 main journals | 2.100 | 400 | 5.850 | 1850 |
|
350-3800BB6F-57
|
3.800 | 2.100 | 350 | 5.700 | 1800 | |
|
350-3875BB6F-57
|
3.875 | 2.100 | 350 | 5.700 | 1800 | |
|
400-3875CB6F-585
|
3.875 | 400 Mains | 2.100 | 400 | 5.850 | 1800 |
|
350-4000BB6F-585
|
4.000 | 2.100 | 350 | 5.850 | 1850 | |
|
350-4000BB6F-60
|
4.000 | 2.100 | 350 | 6.000 | 1850 | |
|
400-4000CB6F-585
|
4.000 | 4.000 stroke with 400 main journals | 2.100 | 400 | 5.850 | 1850 |
|
400-4125CB6F-60
|
4.125 | 4.125 stroke with 400 main journals for 6.000 or longer rod | 2.100 | 400 | 6.000 | 1850 |
SBC Lightweight Crankshafts |
||||||
|
283-3350AD6L-60
|
3.350 | with Honda rod journal and 283 Main Journal | 1.888 | 283 | 6.000 | 1750 |
|
350-3350BD6L-60
|
3.350 | 3.350 Lightweight, Honda journal, 350 Mains | 1.888 | 350 | 6.000 | 1650 |
|
350-3480BB6L-OPS-57
|
3.480 | 3.480 Lightweight, one piece rear seal | 2.100 | 350 | 5.700 | 1800 |
|
350-3500BA6L-60
|
3.500 | 3.500 Lightweight, 2.000 small journal | 2.000 | 350 | 6.000 | 1750 |
|
350-3500BB6L-57
|
3.500 | 3.500" Lightweight, 5.700 minimum rod length | 2.100 | 350 | 5.700 | 1750 |
|
350-3500BB6L-60
|
3.500 | 3.500" Lightweight, 6.000 minimum rod length | 2.100 | 350 | 6.000 | 1750 |
|
350-3750BB6L-57
|
3.750 | 3.750" Lightweight | 2.100 | 350 | 5.700 | 1750 |
|
350-3750BB6L-60
|
3.750 | 3.750" Lightweight | 2.100 | 350 | 6.000 | 1750 |
|
350-3875BB6L-60
|
3.875 | 3.875" Lightweight | 2.100 | 350 | 6.000 | 1750 |
If you do not find the small block Chevy crankshaft you need, please contact us for assistance. New models are constantly in development so we may have cranks available that have not been added to this site yet.
do you have a 4340 Molnar crank for a SBC 400 main, 3.875 or 4.00 inch throw, please?
Thanks, Neil
Hello Neil,
Yes, we do have a 3.875 stroke, 400 main journal crank available. They were left off the catalog listing by mistake but we just updated the page so you can see that model now.
Thank you for bringing that to our attention and we look forward to assisting you.