cmac06

iTrader: (16)

I was looking for a Magnum crank in 4 inch stroke and stock journals, and there are at least two part numbers listed. Does anyone know the differences. Here's what's listed currently with 2.1 rod journals and 2.559 mains:

APO31T-MG
APO31V-MG

87silverbullet

iTrader: (11)

There is actually a 3rd one with the same specs AWO31T-MG.

From what I can tell the Part numbers are deciphered as such and we are going to use the part number above.

A= Engine Family

W= Don't know. could be reluctor? They only come W or P

O= Stroke

31= Size of pins whether 2.1 or 2.0

T= Don't know this either. it could be reluctor too. It only comes T or V

MG= Magnum

KCS

iTrader: (20)

Probably a different PN for snouts too, L1 vs LS7.

Scoggin Dickey

iTrader: (34)

W = long snout for LS7 style dry sump.

There's not really a difference in V or T to the end user. It's an internal Callies thing related to balancing and you can't actually choose one or the other.

cmac06

iTrader: (16)

Appreciate the help everyone. I think that answers my question. So the T/V is wheel I suppose? I saw dragonslayers listed like DSXX is it the same for Magnum.

Scoggin Dickey

iTrader: (34)

There's not an official part number difference for the reluctor. Sometimes it's tacked on the end of the part number as 24 or 58 by the reseller like we do, but generally it's just specified on their label.

T/V doesn't really mean anything to the end user.

KCS

iTrader: (20)

1800g or 1850g bobweight, right?

cmac06

iTrader: (16)

That's good to know, KCS. It'd be a lot easier to balance off a 1850 bob weight instead of 1800. Right now I'm coming in at 1810, so I wouldn't need to add tungsten. The only place I see this advertised is on Callies' site, so is it best to just order from them, or can vendors order the heavier crank?

Scoggin Dickey

iTrader: (34)

Per Callies when I talked to them this afternoon the T is a new version that they think will balance out easier, but they aren't ready to ship yet. V is the existing version.