stevieturbo

Callies, and I'm sure others make a wide variety of cranks for the LS. But what's the difference ?

There is a

Magnum, no material mentioned ?

Magnum XL, no material mentioned ?

Compstar, 4340 forging ?

Dragonslayer, also 4340 forging ?

Ultra Billet ( nice ) but out of my league lol

Then there also seems to be a range of 5140 material, although cant find a name for them ?

So what's best or best value ? What's the difference ?

Supercharged car so dedicated cog blower drive will be hanging off the nose.

JS01

iTrader: (10)

The 5140 cranks they made were called the LSc or C-Series which have since been discontinued.

The compstar is their imported forged 4340 entry level type crank. Still a very nice piece though and probably the best bang for the buck.

The dragonslayer is forged 4340 and US made, fully machined surface on the counter weights, etc., think it may have a different nitriding process than their other cranks? Im sure someone from Callies will chime in.

The magnum is forged 4340 and US made, this is their 'standard' crankshaft really from what i gather.

The magnum XL is the lightened version of the magnum.

The ultra billet is timken billet 4330, center counter weighted, top of the line.


Any of them would work for what you're wanting to do.

Silver408z

iTrader: (1)

Everything JS01 posted is what I have heard and even some stuff I didnt know. The only I would add is the 5140 crank was not good of material and why it has different numbers. Also that the snout on the crank is not good for a supercharger.

djfury05

iTrader: (30)

You will want either the dragonslayer or upgrade to the Magnum/Xl cranks to prevent crank flex

Callies Performance

All of the above statements are true. I would just add that the DragonSlayer and the Magnum are made from the same forging, the only difference is the Magnum has more hand shaping on the counterweights. The heat treat is the same on both. For your application I would at least go with the DragonSalyer


Adam @ Callies

stevieturbo

Thanks Adam.

So what would be the benefits of opting for a Magnum over a Dragonslayer ? As I believe both are available in 3.825" ?

In 3.825" are either available off the shelf ? I will be buying via AES, as they'll be sorting me rods and pistons too.

Just curious as to why so many variations of crank, and in what way would they be suited to different applications.

My current crank is just a Compstar 4.0" but I want to reduce the stroke.

02blackbeauty19

iTrader: (22)

This is info that I have been researching, too.

If you don't mind, Steve, I'd like to throw out a question to Adam@Callies as it does pertain to this thread.

Adam, Do you guys offer the Compstar in 3.800" or 3.825"?

XtraCajunSS

iTrader: (2)

I would not run the Magnum XL in a nitrous or forced induction application. As mentioned above, the Dragonslayer would be the budget choice followed by the Magnum. The real differences there are going to be in windage losses.

I personally have a Magnum XL which in my opinion is a total work of art. Its simply a beautiful crankshaft. I'm using it in a high winding LS9 block/ET LS7 headed naturally aspirated build for my 05 CTS-V...

Shane

stevieturbo

I know what you can see doesnt mean everything.

But from the images on their website. The Dragonslayer and Magnum look identical ?

Is it a generic image, or do they look the same ? The Magnum possibly a slightly smoother finish ?

Dragonslayer



Magnum

Jontall

Magnum XL

Callies Performance

Yes the DragonSlayer and Magnum are very close, but what you do not see in the pics above, are that the leading edges on the Magnum are much cleaner and more rounded, thus reducing oil windage. For higher RPM applications, where windage is more demanding the Magnum is the better choice.

-Adam

Callies Performance

Also it is hard to tell by the picture, the pin arms are much cleaner on the magnum as apposed to the DragonSlayer.

Callies Performance

One more ...sorry Compstar cranks only come in 3.625, 4.000 4.100 4.125

02blackbeauty19

iTrader: (22)

Thanks for the clarification, Adam!

I guess I'll have to spring for the Dragonslayer when the time comes. The 3.800 is available in the dragonslayer, correct? At least I know it is through AES.

Callies Performance

Should not be a problem.

dr ls7

What sort of power levels can I expect from compstar crank and rods? Are they suitable for 50-150hp nitrous

Or dragonslayer with ultra lite compstars

slowride

iTrader: (3)

So why was the lsc crank discontinued????

SnIpEz

iTrader: (4)

Lmao, yes, yes they are more than suitable

dr ls7

Whats so funny?

dr ls7

aah i see now, part of my post is missing,(bloody cut n paste) it shouldve read 700 N/a plus the 50 - 150 hp nitrous