383 crank in 440???

[Gmoody]

Hello all! I am new to the Mopar world and would love some input! I have a383, but I just picked up a 440, can I use the crank from the 383 in the 440?

[Troy]

The 383 has a shorter stroke (shorter deck height) with smaller mains. You can turn down the 440 mains to fit in a 383/400 block (low buck stroker) but going the other way seems like it would be a lot of work for negative improvement. Basically you'd need longer rods which is kind of backwards.

Troy

[Gmoody]

Thank you so much for the reply! I'll be looking to get a 440 crank.

[Nacho-RT74]

Maybe if the mains were the same size dould be used for a "distroker"? To lower the compresion for turbocharged setups... but actually is not posible due the 383 mains being smaller.

[John_Kunkel]

There used to be spacers available for installing a B crank in an RB block but I haven't seen them in recent years. However, they're still available for the small block.

http://www.moparmecca.com/DrillDown/Details/Bearing%20Spacer.htm

[Troy]

There used to be spacers available for installing a B crank in an RB block but I haven't seen them in recent years. However, they're still available for the small block.

http://www.moparmecca.com/DrillDown/Details/Bearing%20Spacer.htm

What would be the advantage? Like the 383 to 440, the 340 has a shorter stroke than a 360. However, I'm reasonably sure you can buy after market cranks with the smaller journal (at least I remember that while researching my 5.9 Magnum) so I can see the benefit of less friction at the bearing *WITH* a longer stroke. Just curious what the benefit might be if someone were to actually use a factory crank.

Troy

[John_Kunkel]

Shorter strokes are a NASCAR thing.

[Nacho-RT74]

as I mentioned, and as you know, not being an expert, just a thought, shorter stroke to get less CR for turbo applications I think