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MP cast stroker cranks for small blocks (quality) #577301
01/09/10 12:27 PM
01/09/10 12:27 PM
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w2dak394 Offline OP
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w2dak394  Offline OP
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Saw the post on eagle cranks, what about the Mopar (scat) cranks?

Re: MP cast stroker cranks for small blocks (quality) [Re: w2dak394] #577302
01/09/10 12:36 PM
01/09/10 12:36 PM
Joined: Jan 2005
Posts: 12,424
Kalispell Mt.
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HotRodDave Offline
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Kalispell Mt.
I have had two and they were both very nice, not perfect but very useable out of the box in my mild combos. The rods were both very close to perfect and totally useable OOTB.

They are a lot better than the eagle crap


I am not causing global warming, I am just trying to hold off a impending Ice Age!



Re: MP cast stroker cranks for small blocks (quality) [Re: HotRodDave] #577303
01/09/10 01:29 PM
01/09/10 01:29 PM
Joined: Apr 2005
Posts: 1,880
USA
Ron Silva Offline
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Ron Silva  Offline
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USA
Just be sure and check to make sure you have enough "converter pull up" when you mate the engine to your trans. I would say you are pushing it at .060, but .125 would be better. My MOPAR 406 crate that I believe has a scat crank in it did not have enough and it ruined the thrust bearing and messed up the crank. They made the rear flange thicker and it is back too far.


SRT DEMON ONE SEAT
Re: MP cast stroker cranks for small blocks (quality) [Re: w2dak394] #577304
01/09/10 01:31 PM
01/09/10 01:31 PM
Joined: Nov 2004
Posts: 1,708
S. Il. U.S.A.
5spdcuda Offline
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Personally I wouldn't use any cast crank for a stroker. I have and would use the factory stock stroke cast cranks for street or mild bracket use after magnaflux and with internal balance. I wouln't use a cast crank in a stroker because I think it is a false economy. Many of the cast cranks can't be internally balanced without a lot of expensive mallory metal. I know a lot of people have used external balance successfully, but I still don't care for it. Cranks are subjected to enough bending and torsional loads as it is without adding to them unnecessarily. Also if you lose a bearing for some reason and mess up a crank journal a forged crank can be cut down, welded and cut back to standard. I don't know of anyone successfully welding cast cranks. Mess up a cast crank and you have an expensive boat anchor, even more so if you have mallory in it. Sometimes it just pays to spend a little more up front.

Re: MP cast stroker cranks for small blocks (quality) [Re: Ron Silva] #577305
01/09/10 02:24 PM
01/09/10 02:24 PM
Joined: Mar 2003
Posts: 15,493
the boonies
aarcuda Offline
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Quote:

Just be sure and check to make sure you have enough "converter pull up" when you mate the engine to your trans. I would say you are pushing it at .060, but .125 would be better. My MOPAR 406 crate that I believe has a scat crank in it did not have enough and it ruined the thrust bearing and messed up the crank. They made the rear flange thicker and it is back too far.




could you explain this a little more? are you saying the flange on the crank was thicker so the flexplate was closer to the transmission so the converter pushed the crank forward???

When i installed my scat FORGED crank, the converter slid right up to the flexplate so I wouldnt think thered be a problem....


It's got a cop motor, a 440 cubic inch plant, it's got cop tires, cop suspensions, cop shocks. It's a model made before catalytic converters so it'll run good on regular gas.






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