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Eagle or Scat crank and rods Need advice!

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Old 02-10-2005, 09:18 PM
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Default Eagle or Scat crank and rods Need advice!

I need some help deciding on weither to get an eagle or scat forged 383 rotating assembly.ive heard good and bad about both.What do you recommend,and what numbers are you putting out?
Old 02-11-2005, 02:19 AM
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Both are about in the same range as to quality. Personally I'd go with the better price of the 2.
Old 02-11-2005, 06:09 AM
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Yep, go with the best price. Both are stronger than stock...and oem cranks have survived 800 hp nitrous engines in the ls-1. So it is probably a safe bet that any decent forged crank will hold up to what you are going to throw at it.

The real concern if you plan on pushing a great deal of hp is: what rods are you using?
Old 02-11-2005, 06:41 AM
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thats another thing, its going to be either eagle forged or scat forged rods.im hoping to put out between 475-500 plus N20 so i want to make sure i get the better things that i wont have to worry at all, and it is my daily driver so....
Old 02-11-2005, 11:41 AM
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Originally Posted by ddnspider
thats another thing, its going to be either eagle forged or scat forged rods.im hoping to put out between 475-500 plus N20 so i want to make sure i get the better things that i wont have to worry at all, and it is my daily driver so....
So you are shooting for what 600-700 hp on the bottle? You are not going to break either crank with that, if you change the oil regularly and don't try to spin it past 8000 rpm too often. You don't even need a steel crank for what you are doing. Stock rods, with a really good tune, if they are carefully looked over and everything is balance properly, will safely take 600 hp.
Old 02-11-2005, 05:58 PM
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well actually its a Scat or Eagle package so either way their getting upgraded.what did you mean rev to 8000?i cant rev the motor that high can i?i was thinking MAYBE 7000
Old 02-11-2005, 06:23 PM
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Originally Posted by ddnspider
well actually its a Scat or Eagle package so either way their getting upgraded.what did you mean rev to 8000?i cant rev the motor that high can i?i was thinking MAYBE 7000
I used to shift a forged (oem) sbc crank in a 361 cid (.060 350) at 7500 rpm and had over 200 passes, and 20,000 street miles on the crank when I tore the car down. I reused the crank in a truck... when I wraped the truck around a pole the crank was still ok.

This was in a 10 second car, making just over 600 hp.
Old 02-11-2005, 07:27 PM
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isnt there a difference between a regular small block motor and and an ls1?
Old 02-11-2005, 11:29 PM
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Yes, they are 2 diffrent motors. Not many people around here use SCAT. I've heard much more about the eagle parts than I ever have SCAT. Like everyone else said, just pick the one that is better priced since they are pretty much the same all the way around.
Old 02-11-2005, 11:48 PM
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They are both good. I bought all Eagle 4 inch stroke stuff. Plan to turn it to 8500 some do soon. I would not think twice about putting that kind of power on either one. If you have great machinest that can balance everything right and fit everything right. I had all my stuff remachined and checked. Oh, I do not know if I would turn it 8500 in an aluminum block though. I went with the cast iron 6 litter block with steal main caps and arp stud kits. I am sure some one on here has tried to turn the stock 5.7 litter block tight. Maybe one of them will sound off here in a sec.
Old 02-12-2005, 01:36 AM
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Originally Posted by Beast96Z
Yes, they are 2 diffrent motors. Not many people around here use SCAT. I've heard much more about the eagle parts than I ever have SCAT. Like everyone else said, just pick the one that is better priced since they are pretty much the same all the way around.
Yes, but I was using an example as a comparison. Just pointing out that crankshafts in general are capable of handling more abuse than most give them credit for. They are rarely a weak link in an engine.
Old 02-12-2005, 08:39 AM
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so what could i run the engine to,i was thinking about getting a rev kit as well?
Old 02-12-2005, 10:31 AM
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Originally Posted by ddnspider
so what could i run the engine to,i was thinking about getting a rev kit as well?
There is no need for a rev kit. Strokers aren't intended to rev to the moon. IMO, as long as there are springs avalible to handle your cam in a desired RPM range, rev kits are a waste of money and HP. If you planned to rev past 7k, which you won't, one might be neccesary. There are to many good valve springs out there to worry about a rev kit in a hydraulic application.
Old 02-12-2005, 11:58 AM
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nick the same thing i told you.. u can make 600+ on the stock bottom end and and a rev kit is pointless.. you have multibple people local trying to point you in the right direction.. just listen, do your research.. .. i let you make a decision on a part and you see what that got you.. LOL (you know what i'm referring to..) you know i won't let u **** up ur car.. u need to sit down with me and keith and we can see what ur goals are and what its gunna take to acheive them safely..
Old 02-12-2005, 01:10 PM
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Mike...you'll forgive me if i decide to get as much advice as possible from as many people as possible.i appreciate yours and keiths advice and you know im always looking for your advice but im not going to swear by everything you say. i HAVE been doing my research and WTF does this mean?"i let you make a decision on a part and you see what that got you.. LOL (you know what i'm referring to..)" Youre going to let me make a dicision about what, my own motor?im getting a better deal then whats on the CAMAROZ28 thread so dont worry about it.i have a company working with me theyre going to store my block til i can afford to get everything done.if im planning on dropping a couple K why would i ask more than 2 people ive been asking everyone i can to get a feel for what i want done thats in my price range and will be my goal for the car.you should have pmed me if you had a problem with me asking others about everything.nice friend
Old 02-12-2005, 07:14 PM
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Eagle = CHINA
Old 02-12-2005, 08:26 PM
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i was leaning towards Scat anyways.since it is my daily driver/commuter i want it very streetable,so how big of a cam can i go while still achieving this?




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