I need to know what the differences are between these 2 cranks. Do they start with the same core and add heat treatment and journal drilling to get the racemaster from the dragonslayer? Or is it more complicated then that. I ordered a block from CMS and have been waiting on a racemaster since 5/27 . I want to get this car out this year still and I need to know what makes the racemaster stronger etc then the dragonslayer. I can get a dragonslayer now but with a blower I figured might as well go with the stronger piece. Any help would be appreciated.

 

callies.com they probably have a # you can call.
plus you will most likly get correct info unlike you may get on a messageboard.


brook

 

there website is down, anyone know?

 

Callies: http://www.callies.com/catalog/cranks.html

 

They are the same material and the same basic forging. The difference is in the amount of machining the crank recieve. The machining lightens the crank, makes it more aerodynamic, etc. But the Dragonslayer is just as strong as the higher end parts. It's a relative bargain for anything other than a max effort race motor.

Rich

 

do you think the dragonslayer could hold up in a 1600 hp dart sbc turbo application?

 

It probably would be up to the task, as the Racemaster isn't neccesarily stronger than the Dragonslayer. If I am not mistaken the two cranks go through the same heat-treat process (which is really cool to see by the way) and then the machining that crank master actually goes through to become either a Racemaster or a Dragonslayer is what makes a difference.

I forwarded this link on to guy at Callies, hopefully he can come in here and explain better than I can.

 

I don't see why it wouldn't. But calling Callies isn't a bad idea under the circumstnaces.

Rich

 

This is reply I got from my contact at Callies.


The Racemaster Crank and the DragonSlayer Crank both start with the same
forging. The most important difference here is the Heat Treat. The
Racemaster gets the full Perma Tough Heat Treat. The DragonSlayer only gets
the Dura Tough Heat Treat. The Perma Tough Heat Treat covers the journal
surface and goes up the radius which is where strength is developed. The
Dura tough Heat treat is on the OD of the journals only thus making it not
as strong.

The Racemaster crank also gets all of the rod journals drilled for
lightening purposes. It will typically weight 1-2 lbs less than the
DragonSlayer.

Will the DragonSlayer work in a Street/Strip Application with some boost?
Certainly! Especially in a "computer" Controlled car. I know of several
people out there using the DragonSlayer in this type of application pushing
out over 850 HP. In these type of applications your Connecting Rods and
pistons are the "weak link" in a motor like this.

Callies will soon offer a crankshaft line up also called the CompStar Crank.
These will be a Nitrided crankshaft with all 4 Rod Journals Drilled that
will send to a end user for $715.00. These will be available the Middle of
October. A lot of people probably have seen the ads about the Connecting
Rods which are available right now for Small and Big Block Chevys along with
a LS1 specific Rod. We are not hiding the fact that all of these
Components and Connecting Rods are being rough machined in China. We are
though thoroughly qualifying ever item here in Ohio. We also can proudly
boost there are for SURE a 4340 Material and are made to our Design. We
have spent a lot of time designing our own Forging Die for the Cranks and
rods which will lead to a better part in strength and in weight.

 

Thanks for all of the info here, I think I will just get the dragonslayer so that I don't have to wait any longer. It should hold up to a D1 tugging on it..

 

Randy, shouldn't be a problem.

 

hmm..i'll have to give them a call tommorrow and see what they say about it standing up to 1600 hp. Most of the time the car will only be making around 1000 hp but i don't want the crank to be the weak link when i turn up the boost.

 

Thank you Nick for once again coming through for me! Hopefully I will have my car out soon.

 

wheres the best palce to get a callies crank from? seems like alot of people sell them

 

Just giving some information.