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SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK??????????

Posted By: RAY1969CARS

SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/08/09 06:15 PM

have you ran this crank????? can you give me input????? i see them on ebay for 265.00 can they take 500hp??? 7000rpm thanks guys mopar or no car!
Posted By: Anonymous

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/08/09 06:50 PM

Look around the forged ones are around $500 range--they are easy to balance and that saves the diff in $$ usually making it a wash--some rod piston combos come up pretty easy with the cast but it is a crap shoot--could need Mallory metal or expensive flexplate etc--On the other hand I have made lots of them with cast and never had a problem but forged is better in the end IMO
Posted By: HotRodDave

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/08/09 07:17 PM

I wouldn't dream of takeing one to 7000. Even in a mild aplication they are a crap shoot. I have a friend with one he just wanted to have more power in his 5.9 magnum pickup and he installed a eagle stoker kit and had it checked and rebalanced locally and the front of the crank just snapped off on where the over lap is between the front crank pin and front main journal, there was a big bubble in there not to mention how much materiel is not there that is there on my SCAT crank and it was a disastor doomed from the begining and no magnaflux or anything would have detected it. His motor was very mild just had KB 356 pistons eagle rods no porting of anything and he even used a stock 5.2 magnum cam to get a little more tq with virtually no $$$ and it couldn't take that for a couple weeks and Eagle was of no help. Also if you look at there rods compared to a SCAT the differance is night and day and the metal is a much better quality so for the very minimal $$$ differance I would not use anything from eagle ever again, go with the SCAT and sleep well
Posted By: Anonymous

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/08/09 07:27 PM

Not Eagle but i ran the Mopar cast in my 416,taking it to 7000 rpms several times with no issues,they were $400 when i built mine i think you can get them cheaper now..by the way the 416 made 520 h.p. and 500 lbs of tq...
Posted By: HotRodDave

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/08/09 07:36 PM

My mopar cast and forged 4 inch cranks both have the SCAT logo on them
Posted By: 70AARcuda

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/08/09 08:00 PM

Quote:

My mopar cast and forged 4 inch cranks both have the SCAT logo on them



yuph...scat made them for mopar ...
Posted By: S/ST 3040

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/08/09 08:08 PM

Quote:

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My mopar cast and forged 4 inch cranks both have the SCAT logo on them



yuph...scat made them for mopar ...



Even the big $$$$ billets. Mine doesn't have any logo on it.

Attached picture 5470297-DSCN2026.JPG
Posted By: Otherlane

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????? - 09/08/09 09:12 PM

I ran the mopar cast 4 in crank when they first came out 414 13 to 1 motor that saw 7000 rpm for 3 years without problems.the car ran 10.50@3300 pounds
Posted By: DblOJoe

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/08/09 09:20 PM

Mancini had them for $239.00. You might want to check there first.
Posted By: Quicktree

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/08/09 10:09 PM

Quote:

Not Eagle but i ran the Mopar cast in my 416,taking it to 7000 rpms several times with no issues,they were $400 when i built mine i think you can get them cheaper now..by the way the 416 made 520 h.p. and 500 lbs of tq...



how long did that motor last? just curious
Posted By: Anonymous

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/08/09 10:53 PM

Quote:

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Not Eagle but i ran the Mopar cast in my 416,taking it to 7000 rpms several times with no issues,they were $400 when i built mine i think you can get them cheaper now..by the way the 416 made 520 h.p. and 500 lbs of tq...



how long did that motor last? just curious



Motor lasted 2 seasons until a ROD BOLT SNAPPED!!! ARP too...
Posted By: Thread Ender1

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/08/09 11:19 PM

Are the Eagle Forged stroker cranks flawed also??
Posted By: Scamp408

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/08/09 11:24 PM

Quote:

Quote:

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Not Eagle but i ran the Mopar cast in my 416,taking it to 7000 rpms several times with no issues,they were $400 when i built mine i think you can get them cheaper now..by the way the 416 made 520 h.p. and 500 lbs of tq...



how long did that motor last? just curious



Motor lasted 2 seasons until a ROD BOLT SNAPPED!!! ARP too...


What Rods?
Posted By: S/ST 3040

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/08/09 11:25 PM

Quote:

Quote:

Quote:

Quote:

Not Eagle but i ran the Mopar cast in my 416,taking it to 7000 rpms several times with no issues,they were $400 when i built mine i think you can get them cheaper now..by the way the 416 made 520 h.p. and 500 lbs of tq...



how long did that motor last? just curious





Motor lasted 2 seasons until a ROD BOLT SNAPPED!!! ARP too...


What Rods?



Posted By: goldmember

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/08/09 11:31 PM

The favorite connecting rod of any serious small block build,eagle sir's. Can we say kaboom!!! 520hp in an Abody will get you 10.60's and 125 mph. May be 460 hp is the limit for the sirs.
Posted By: Crizila

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/09/09 12:05 AM

Quote:

have you ran this crank????? can you give me input????? i see them on ebay for 265.00 can they take 500hp??? 7000rpm thanks guys mopar or no car!

I've got 2 seasons on mine in a 408 motor. Around 450HP at the rear wheels. Don't wind it to 7K though. I shift around 6 - 6200rpm.
Posted By: Quicktree

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/09/09 12:08 AM

Quote:

Quote:

Quote:

Not Eagle but i ran the Mopar cast in my 416,taking it to 7000 rpms several times with no issues,they were $400 when i built mine i think you can get them cheaper now..by the way the 416 made 520 h.p. and 500 lbs of tq...



how long did that motor last? just curious



Motor lasted 2 seasons until a ROD BOLT SNAPPED!!! ARP too...



yea right 2 seasons how many pases? the cheap SIRS you put in there is what broke. that and the 7000 rpms
Posted By: 80arrow

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/09/09 12:42 AM

I ran a cast mopar crank in my 408 for 3 years, around 4-500 passes or so. It dynoed 553 horsepower and I don't remember the torque off hand. Only pulled it out to put in a 416. The engine builder said that with a cast crank not to use a transbrake with it.
Posted By: 10 o to go

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/09/09 12:58 AM

I ran my 410 cast crank with all transbrake launchs4000, 6800 shifts .Don't remember what rods ,arp bolts ,in the OHIO CRANK kit ,replaced crank too much alky oil then replaced with mopar C.C till death last year at MMW about 6 years of bracket racing for pts . Stepped up this year callies,probe pistons.
long run get forged crank
don

Attached picture 5470827-challengerfavorite.jpg
Posted By: CJK440

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/09/09 02:24 AM

I bought a cast one for a 408ci interim motor for my F.A.S.T. Duster. It took me to 11.90 @ 114 which was very good considering how we had to run. I wrung it only to 6200 or so. The amount of meat in the arm between the 7/8 journal and the rear main bearing journal was scary to look at but didn't cause an issue.

One very nice positive is that it didn't need any mallory to internally balance. I ran Eagle H beams and SRP forgings.
Posted By: Anonymous

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/09/09 07:54 AM

Quote:

Quote:

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Not Eagle but i ran the Mopar cast in my 416,taking it to 7000 rpms several times with no issues,they were $400 when i built mine i think you can get them cheaper now..by the way the 416 made 520 h.p. and 500 lbs of tq...



how long did that motor last? just curious



Motor lasted 2 seasons until a ROD BOLT SNAPPED!!! ARP too...



yea right 2 seasons how many pases? the cheap SIRS you put in there is what broke. that and the 7000 rpms



Hey,you can think what you want..but thats the conclusion my engine builder came up with,and his oppinion is a LOT more important then yours,yes 2 seasons i have a "REAL" engine builder,not someone that just puts engines together like so many do..not his fault the bolt let go either..
Posted By: MoparBilly

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/09/09 08:22 AM

Quote:

have you ran this crank????? can you give me input????? i see them on ebay for 265.00 can they take 500hp??? 7000rpm thanks guys mopar or no car!



I really can't see why you'd need to turn 7K rpm to make 500 ponies with a 4 inch arm!!!

My first question would be application?

I have 2 friends; very respected, very successful NHRA SST racers who ran the 4 inch cast cranks, one with W-2's, the other with W-5's, Transbrake 904's, both over 132 mph on the stop at 10.90 and 2900lbs. They each broke 2 of the cast cranks, at between 150-250 passes, before moving on to forged units.

Street car, moderate rpms and compression, no problem, but in a serious race engine, that's not a place to save 300 bucks.
Posted By: Quicktree

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/09/09 09:56 AM

Quote:

Quote:

Quote:

Quote:

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Not Eagle but i ran the Mopar cast in my 416,taking it to 7000 rpms several times with no issues,they were $400 when i built mine i think you can get them cheaper now..by the way the 416 made 520 h.p. and 500 lbs of tq...



how long did that motor last? just curious



Motor lasted 2 seasons until a ROD BOLT SNAPPED!!! ARP too...



yea right 2 seasons how many pases? the cheap SIRS you put in there is what broke. that and the 7000 rpms



Hey,you can think what you want..but thats the conclusion my engine builder came up with,and his oppinion is a LOT more important then yours,yes 2 seasons i have a "REAL" engine builder,not someone that just puts engines together like so many do..not his fault the bolt let go either..



sure he's going to say that , he suggested them and told you they would be fine. you didn't tell us how many passes in the 2 seasons you made.
Posted By: Anonymous

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/09/09 01:00 PM

Quote:

Quote:

Quote:

Quote:

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Not Eagle but i ran the Mopar cast in my 416,taking it to 7000 rpms several times with no issues,they were $400 when i built mine i think you can get them cheaper now..by the way the 416 made 520 h.p. and 500 lbs of tq...



how long did that motor last? just curious



Motor lasted 2 seasons until a ROD BOLT SNAPPED!!! ARP too...



yea right 2 seasons how many pases? the cheap SIRS you put in there is what broke. that and the 7000 rpms



Hey,you can think what you want..but thats the conclusion my engine builder came up with,and his oppinion is a LOT more important then yours,yes 2 seasons i have a "REAL" engine builder,not someone that just puts engines together like so many do..not his fault the bolt let go either..



sure he's going to say that , he suggested them and told you they would be fine. you didn't tell us how many passes in the 2 seasons you made.



Hey smarty pants,he was actually AGAINST me using them and when it was determined it was a rod bolt and not the rod he was surprised as anyone.. as for the number of passes i really don't know..
Posted By: S/ST 3040

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/09/09 01:08 PM



Quote:

Street car, moderate rpms and compression, no problem, but in a serious race engine, that's not a place to save 300 bucks.




............or even $600
Posted By: Quicktree

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/09/09 03:19 PM

Quote:

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Quote:

Quote:

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Quote:

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Not Eagle but i ran the Mopar cast in my 416,taking it to 7000 rpms several times with no issues,they were $400 when i built mine i think you can get them cheaper now..by the way the 416 made 520 h.p. and 500 lbs of tq...



how long did that motor last? just curious



Motor lasted 2 seasons until a ROD BOLT SNAPPED!!! ARP too...



yea right 2 seasons how many pases? the cheap SIRS you put in there is what broke. that and the 7000 rpms



Hey,you can think what you want..but thats the conclusion my engine builder came up with,and his oppinion is a LOT more important then yours,yes 2 seasons i have a "REAL" engine builder,not someone that just puts engines together like so many do..not his fault the bolt let go either..



sure he's going to say that , he suggested them and told you they would be fine. you didn't tell us how many passes in the 2 seasons you made.



Hey smarty pants,he was actually AGAINST me using them and when it was determined it was a rod bolt and not the rod he was surprised as anyone.. as for the number of passes i really don't know..



thats not what you told us when you first came on here. you said the builder told you they were good for your HP. it doesn't matter Im just ragging you but I still bet the rod broke first. got any pics of the the rod and bolts?
Posted By: cptn60

Re: SB MOPAR 360/408 EAGLE 4.00" CAST STEEL CRANK?????????? - 09/09/09 04:23 PM

At the end of the day will you regret spending the money for the forged? Unlikely. Could you say the same for the cast version? You pays your money and you takes your chances. Buy the forged, get quality parts and machine work done and concentrate on winning
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