I have a 410 small block with eagle cast 4 inch crank and cast flat top pistons. The crank broke the other day but I was able to source an eagle steel 4 inch crank locally. Are these any good as I do not want to brake another crank. on the Hughes web site they list it good for 1400 HP. My engine currently makes about 500HP. I am also going to change the pistons to SRP forged, dished pistons that are listed at 10.3 comp with my 65cc eddy heads. Are these pistons OK as I am upgrading my heads at the same time with bigger valves and a performace valve job. I want it to be strong as one day I might put a dose of nitros in it and want it to be able to handle about 600HP. What do you guys think?
Cast v Forged Crank
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TheMoparMan
Modifies everything
Go forged crank.
Locomotion
Well-Known Member
I've had no issues with the Eagle cast 3.58 stroke cranks. I've also been using the SRP flattop pistons, which are nice & light. Probe are light as well and a bit less expensive. But double-check the configuration of the SRP's you mentioned. I've seen flat-tops listed as flattop/inverted dome. The 10.3-1 compression with 65 cc chambers sounds like it would be a flattop.
There's more to it than horse power rating. Deflection at rpm and the quality of the balancer are huge factors. Forged steel will have less deflection and more adequately utilize the balancer too. That's what I was told anyway.
fratzog lover
Well-Known Member
There is a good number of broken Eagle crank stories on all forums, GM, Ford, Etc. No its not a Scat or Callies. Of course how many of these engines were not balanced properly is another matter. Chances are you will be fine.
SuperStock1489
Member
The forged steel cranks are ok, just check the journals for taper and size, as I have seen a few that had to be reground. Eagle stuff is machined off-shore and sometimes they do have quality issues.
fishy68
Tyr Fryr's Inc.
I used a Eagle forged in a buddies 418 a few yrs. ago and it had to be re-ground right out of the box. Had too much taper. My suggestion is to get a Molnar. I recently got one NIB for $650 shipped. It was a special though.
Add me to the list of broken eagle cast cranks. The one in my very mild 408 broke about 3 months ago. Running super light Wiseco Pro-tru pistons, SCAT rods. All properly balanced and only making about 450 hp and never revved over 6000 rpm. Snapped right between the #1 rod journal and front main. Replacing it with the above mentioned Molnar.
Add me to the list of broken eagle cast cranks. The one in my very mild 408 broke about 3 months ago. Running super light Wiseco Pro-tru pistons, SCAT rods. All properly balanced and only making about 450 hp and never revved over 6000 rpm. Snapped right between the #1 rod journal and front main. Replacing it with the above mentioned Molnar.
pishta
I know I'm right....
Dang, they all seem to break there. Wonder how long mines going to last @ ~425 ? :-( They got a big *** balance hole there that doesnt seem to be centered, bigger thrust side? I had to chamfer my bearings too.
fishy68
Tyr Fryr's Inc.
I haven't seen any pics but that's what I've heard too. I could be wrong but don't think the big hole is for balancing, I think it's to lighten the crank. The Molnar crank I just bought has a much smaller hole so it's thicker in that area. I got super lucky it never tore anything else up when mine broke. I even had mine magnafluxed before installing it. No one around me could x-ray it or I would have done that. Good luck with yours
Mad Dart
Nothing to see Here!
Sorry to hear about your break Tracy. I guess they don't just don't make stuff like they use too!
pishta
I know I'm right....
The hole is to balance, but its from them. They needed to get the bobweight to 2250. The 340 steel crank has it in the same location to offset the heavier rods they hung on an otherwise 273 forging. Forged cranks are usually a tad heavier as the steel used is denser. The 340 cast was stuck with that huge weighted balancer when it went to a lighter cast crank.
fishy68
Tyr Fryr's Inc.
Thanks Louis. Tis life
Don't take this any way: How, did it break? Any pictures, possible? This could help .....
UOP
Well-Known Member
Flatlander Racing has the K1 forged crank for $630 (awesome price for a nice crank IMO). You don't hear about them much in the Mopar world (well I haven't anyway), but they're considered a step or two above Scat, Eagle, etc in the Chevy world.
http://flatlanderracing.com/
http://flatlanderracing.com/
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Broken eagle crank get in line
« on: March 23, 2012, 06:43:21 PM »
only 6000 miles I guess a stroker needs a forged crank
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magnumman
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Re: Broken eagle crank get in line
« Reply #1 on: March 23, 2012, 07:07:26 PM »
WOW, sorry to hear that!
I just bought a cast stroker crank from HiPoTek made by SCAT.
From my phone calls to Eagle and Scat before my purchase, I did gather a bit of info that helped me make my decision on what to buy.
When I called Eagle:
They said their cranks are cast and machined in china...
When I called Scat:
They said there cranks were cast in china but machined in Illinois.
Both companies seems reluctant to tell me the truth and it seemed like they heard my question a 1000 times before. Its too bad we can't get a Made in USA crankshaft for these motors unless its custom. Confused
« Last Edit: March 23, 2012, 07:08:51 PM by magnumman » Logged
2001 Ram QC 1500: 360cid, 2wd, K+N FIPKII, SCT tune, Autolite AP3923\'s, MP 1.7 rollers, MP pushrods, SST rims, Hypertech coil, 10.2mm wires, Gibson super truck exhaust, 3" magnaflow cat, modified Y pipe, modified kegger, 3.92 LSD, MSD-6, Transgo shift kit, 4.7L Injectors, Hipotek 52mm TB
2001 Durango 4.7L 4X4, Magnaflow catback sounds good but is still slow...
hookbone
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Re: Broken eagle crank get in line
« Reply #2 on: March 25, 2012, 07:23:24 PM »
Dont feel bad,mine broke at 6000 miles,snout broke off,they wouldn`t warranty it,so I went with Scat myself.
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Re: Broken eagle crank get in line
« Reply #3 on: March 26, 2012, 02:38:43 AM »
Who make the chrysler heavy duty cast cranks, I got 1?
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MP408
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Re: Broken eagle crank get in line
« Reply #4 on: March 26, 2012, 11:39:50 AM »
I read on anothersite its made by scat..
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Re: Broken eagle crank get in line
« Reply #5 on: March 26, 2012, 06:48:54 PM »
Quote from: Lee Peterson on March 26, 2012, 02:38:43 AM
Who make the chrysler heavy duty cast cranks, I got 1?
Quote from: MP408 on March 26, 2012, 11:39:50 AM
I read on anothersite its made by scat..
Yes as far as I can find the mopar performance cranks are made by Scat
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2001 Ram QC 1500: 360cid, 2wd, K+N FIPKII, SCT tune, Autolite AP3923\'s, MP 1.7 rollers, MP pushrods, SST rims, Hypertech coil, 10.2mm wires, Gibson super truck exhaust, 3" magnaflow cat, modified Y pipe, modified kegger, 3.92 LSD, MSD-6, Transgo shift kit, 4.7L Injectors, Hipotek 52mm TB
2001 Durango 4.7L 4X4, Magnaflow catback sounds good but is still slow...
donram360
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Re: Broken eagle crank get in line
« Reply #6 on: March 27, 2012, 03:43:44 PM »
I wish Mopar would make these stroker cranks for themselves on this side of the pond.
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B1llyw
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Re: Broken eagle crank get in line
« Reply #7 on: March 28, 2012, 12:20:52 AM »
Bad luck. Cast is okay, depends on the horsepower level. Of course faulty parts could fail at any level.
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Bill White
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99 Dakota, RC, SB, 3.9, 2wd, Auto, Fastman TB, HS 1.7 Rockers, Airaid Drop In, SCT Tuning By Hemifever, 4.56 Auburn LSD, Hotchkis Suspension, Modified Kegger, Hypertech Crank Pulley
70cuda383
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Re: Broken eagle crank get in line
« Reply #8 on: March 28, 2012, 06:07:13 PM »
faulty parts can break at any power level, but I've read about more broken Eagle cast cranks than any other crank.
yet, their forged cranks seem to live just fine
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MP408
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Re: Broken eagle crank get in line
« Reply #9 on: December 29, 2012, 07:54:58 AM »
Finally pulled it apart looks like all the others that break in the same exact spot.
* 2012-12-29_12-47-21_447.jpg (1083.5 KB, 3264x1840 - viewed 110 times.)
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MP408
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Re: Broken eagle crank get in line
« Reply #10 on: December 29, 2012, 08:00:34 AM »
Extra parts?
* 2012-12-29_12-58-37_942.jpg (917.6 KB, 3264x1840 - viewed 69 times.)
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DakFink
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Re: Broken eagle crank get in line
« Reply #11 on: December 29, 2012, 08:15:31 AM »
Friends don't let Friend buy EAGLE Parts!!!
Too many quality parts out there for not much more money to mess around with parts that have a Bad Rep!!
You're not going to find a crank that is American made unless you buy Billet. All the Forgings come from overseas PERIOD. That was what Callies Cranks told me when I asked. They expected it wouldn't be long before the Billets would all be import as well.
Now if you want one that is made in America (South America) {not sure where} BPE @ Moparts.com and K1-Tech both get theres from down south and they are spot on with the machine work and None have failed that I have heard of.
Around $695 for a 4.00-4.250 Forged Stroker Crank!!! Not a bad deal!!
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Hot rodder rule of thumb....every $1 invested in head flow is roughly worth $3 in the short block!!!
donram360
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Re: Broken eagle crank get in line
« Reply #12 on: December 29, 2012, 10:52:37 AM »
yeah my kid is back bugging me about which 4" crank to get for the 318/390 he wants to build; I have never bought a stroker crank myself (yet) but even if machined here, Scat's are still "made" in China too... yuk
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Btwilkjr
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Re: Broken eagle crank get in line
« Reply #13 on: December 29, 2012, 05:41:44 PM »
It's only going to get worse as far as China junk engine components or anything cast or forged with the regulations being imposed on steel making facilities thanks to our wonderful president. My brother is the head heavy equipment mechanic for a metal recycler he was on unlimited overtime now he's on 32 hours because of the Obama regulations on anything that puts a light puff of smoke up in the air, too bad there's no regulations on the "load" he leaves behind whenever he speaks.
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Re: Broken eagle crank get in line
« Reply #14 on: December 29, 2012, 09:37:45 PM »
so what crank to buy??? i've looking at them.
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1998 Grand Cherokee 5.9, EQ 2.02, 210x cam, Hughes air gap, 52mm tb, Hemifever jucied up-(gone to car heaven)
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Broken eagle crank get in line
« on: March 23, 2012, 06:43:21 PM »
only 6000 miles I guess a stroker needs a forged crank
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magnumman
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Re: Broken eagle crank get in line
« Reply #1 on: March 23, 2012, 07:07:26 PM »
WOW, sorry to hear that!
I just bought a cast stroker crank from HiPoTek made by SCAT.
From my phone calls to Eagle and Scat before my purchase, I did gather a bit of info that helped me make my decision on what to buy.
When I called Eagle:
They said their cranks are cast and machined in china...
When I called Scat:
They said there cranks were cast in china but machined in Illinois.
Both companies seems reluctant to tell me the truth and it seemed like they heard my question a 1000 times before. Its too bad we can't get a Made in USA crankshaft for these motors unless its custom. Confused
« Last Edit: March 23, 2012, 07:08:51 PM by magnumman » Logged
2001 Ram QC 1500: 360cid, 2wd, K+N FIPKII, SCT tune, Autolite AP3923\'s, MP 1.7 rollers, MP pushrods, SST rims, Hypertech coil, 10.2mm wires, Gibson super truck exhaust, 3" magnaflow cat, modified Y pipe, modified kegger, 3.92 LSD, MSD-6, Transgo shift kit, 4.7L Injectors, Hipotek 52mm TB
2001 Durango 4.7L 4X4, Magnaflow catback sounds good but is still slow...
hookbone
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Re: Broken eagle crank get in line
« Reply #2 on: March 25, 2012, 07:23:24 PM »
Dont feel bad,mine broke at 6000 miles,snout broke off,they wouldn`t warranty it,so I went with Scat myself.
Logged
408
FI Airgap
MSD6
24lb inj
52mmTB
218/224 .528/.536 114
2800PATC Converter
4.11 front and rear
5" lift & 35" tires.
Lee Peterson
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Re: Broken eagle crank get in line
« Reply #3 on: March 26, 2012, 02:38:43 AM »
Who make the chrysler heavy duty cast cranks, I got 1?
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MP408
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Re: Broken eagle crank get in line
« Reply #4 on: March 26, 2012, 11:39:50 AM »
I read on anothersite its made by scat..
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magnumman
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Re: Broken eagle crank get in line
« Reply #5 on: March 26, 2012, 06:48:54 PM »
Quote from: Lee Peterson on March 26, 2012, 02:38:43 AM
Who make the chrysler heavy duty cast cranks, I got 1?
Quote from: MP408 on March 26, 2012, 11:39:50 AM
I read on anothersite its made by scat..
Yes as far as I can find the mopar performance cranks are made by Scat
Logged
2001 Ram QC 1500: 360cid, 2wd, K+N FIPKII, SCT tune, Autolite AP3923\'s, MP 1.7 rollers, MP pushrods, SST rims, Hypertech coil, 10.2mm wires, Gibson super truck exhaust, 3" magnaflow cat, modified Y pipe, modified kegger, 3.92 LSD, MSD-6, Transgo shift kit, 4.7L Injectors, Hipotek 52mm TB
2001 Durango 4.7L 4X4, Magnaflow catback sounds good but is still slow...
donram360
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Re: Broken eagle crank get in line
« Reply #6 on: March 27, 2012, 03:43:44 PM »
I wish Mopar would make these stroker cranks for themselves on this side of the pond.
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B1llyw
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Re: Broken eagle crank get in line
« Reply #7 on: March 28, 2012, 12:20:52 AM »
Bad luck. Cast is okay, depends on the horsepower level. Of course faulty parts could fail at any level.
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Bill White
07 Commander Sport 4x4, 4.7, RAK 6-CD Changer, Sirius Stratus, Superchips
99 Dakota, RC, SB, 3.9, 2wd, Auto, Fastman TB, HS 1.7 Rockers, Airaid Drop In, SCT Tuning By Hemifever, 4.56 Auburn LSD, Hotchkis Suspension, Modified Kegger, Hypertech Crank Pulley
70cuda383
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Re: Broken eagle crank get in line
« Reply #8 on: March 28, 2012, 06:07:13 PM »
faulty parts can break at any power level, but I've read about more broken Eagle cast cranks than any other crank.
yet, their forged cranks seem to live just fine
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MP408
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Re: Broken eagle crank get in line
« Reply #9 on: December 29, 2012, 07:54:58 AM »
Finally pulled it apart looks like all the others that break in the same exact spot.
* 2012-12-29_12-47-21_447.jpg (1083.5 KB, 3264x1840 - viewed 110 times.)
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MP408
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Re: Broken eagle crank get in line
« Reply #10 on: December 29, 2012, 08:00:34 AM »
Extra parts?
* 2012-12-29_12-58-37_942.jpg (917.6 KB, 3264x1840 - viewed 69 times.)
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DakFink
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Re: Broken eagle crank get in line
« Reply #11 on: December 29, 2012, 08:15:31 AM »
Friends don't let Friend buy EAGLE Parts!!!
Too many quality parts out there for not much more money to mess around with parts that have a Bad Rep!!
You're not going to find a crank that is American made unless you buy Billet. All the Forgings come from overseas PERIOD. That was what Callies Cranks told me when I asked. They expected it wouldn't be long before the Billets would all be import as well.
Now if you want one that is made in America (South America) {not sure where} BPE @ Moparts.com and K1-Tech both get theres from down south and they are spot on with the machine work and None have failed that I have heard of.
Around $695 for a 4.00-4.250 Forged Stroker Crank!!! Not a bad deal!!
Logged
Mopar or No-Car!!!!
Current rides:
1999 Dakota R/T Solar Yellow
1999 Dakota R/T Flame Red
2004 Ram 3500 Cummins
2006 Mercedes Benz R500
2009 Challenger SRT-8
Hot rodder rule of thumb....every $1 invested in head flow is roughly worth $3 in the short block!!!
donram360
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Re: Broken eagle crank get in line
« Reply #12 on: December 29, 2012, 10:52:37 AM »
yeah my kid is back bugging me about which 4" crank to get for the 318/390 he wants to build; I have never bought a stroker crank myself (yet) but even if machined here, Scat's are still "made" in China too... yuk
Logged
Btwilkjr
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Re: Broken eagle crank get in line
« Reply #13 on: December 29, 2012, 05:41:44 PM »
It's only going to get worse as far as China junk engine components or anything cast or forged with the regulations being imposed on steel making facilities thanks to our wonderful president. My brother is the head heavy equipment mechanic for a metal recycler he was on unlimited overtime now he's on 32 hours because of the Obama regulations on anything that puts a light puff of smoke up in the air, too bad there's no regulations on the "load" he leaves behind whenever he speaks.
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02 Ram 1500 4x4 QCSB extensive lift mods and offroad equipment
95 Ram 2500 4x4 ECSB 48" Tires 15"lift 440ci fi big block
northwest_5.9
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shake it, don't break it!
Re: Broken eagle crank get in line
« Reply #14 on: December 29, 2012, 09:37:45 PM »
so what crank to buy??? i've looking at them.
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2003 Hemi Ram 2500 4x4 (sold)
1998 Grand Cherokee 5.9, EQ 2.02, 210x cam, Hughes air gap, 52mm tb, Hemifever jucied up-(gone to car heaven)
2006 Grand Cherokee SRT-Mopar CAI 91 OCT. Tune
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71Scamper
Mopar runs thru my veins!
fratzog lover
Well-Known Member
They are a great crank for the money.
fishy68
Tyr Fryr's Inc.
They must have changed a lot then. About 6 or 7 yrs. ago they screwed me around all over a $100 oil pan. Ordered one for a SB Mopar and got one for a BB Ford. The boss wouldn't talk to me. Always put me onto his secretary who'd tell me the boss was out and she couldn't do anything. Had to file a credit card claim to get my money back.:wack:
fishy68
Tyr Fryr's Inc.
UOP
Well-Known Member
He founded K1.
jessearias
Member
I have heard a of a lot of issues with Eagle cranks and rods. I bought an Eagle stroker crank and the rods were out of spec. My machinist corrected the problem, but I will never buy another Eagle product. My machinist swears by Scat parts. Both are made in China, but Scat has better QA/QC. Both make cranks are supposed to handle up to 600 HP, but I would trust the Scat to 600. The Eagle would be pushing it at 500 HP IMHO.
71Scamper
Mopar runs thru my veins!
Well that sucks. Shouldn't of been a big deal to exchange pan. One of my friends had ordered an engine for his Vw bug through them. He was satisfied. I'm surprised by the oil pan though.
UOP
Well-Known Member
Both are good pieces.
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