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mopar cam 557? #561085
12/23/09 08:50 PM 12/23/09 08:50 PM
Joined: Jan 2003
Posts: 526
orange,tx
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onebadstepside Offline OP
mopar
onebadstepside  Offline OP
mopar
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orange,tx
Whats the scoop on the mopar cam 296...557?What are ya shifting at?Combos and ET's are welcome...I know there are better cams out there,just wondering if its still a decent choice for a low buck 360

Small blocks rule!!!!!
Re: mopar cam 557? [Re: onebadstepside] #561086
12/23/09 09:02 PM 12/23/09 09:02 PM
Joined: Oct 2004
Posts: 5,618
long island NY
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Ari440 Offline
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long island NY
for a small block ,do you happen to know what this cam is at *50 ?

1.39 9.85 - 137 mph
Re: mopar cam 557? [Re: Ari440] #561087
12/23/09 09:03 PM 12/23/09 09:03 PM
Joined: Jan 2003
Posts: 9,826
las vegas
70AARcuda Offline
master
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Posts: 9,826
las vegas
252 degrees at .050

Tony

70 AARCuda Vitamin C
71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield)
71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas)
71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
Re: mopar cam 557? [Re: Ari440] #561088
12/23/09 09:05 PM 12/23/09 09:05 PM
Joined: Oct 2009
Posts: 1,267
North, Alabama
D-50 Offline
pro stock
D-50  Offline
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North, Alabama
Should be 251@50

5686119-Picture00611.JPG (565 downloads)
1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...
Re: mopar cam 557? [Re: onebadstepside] #561089
12/23/09 09:18 PM 12/23/09 09:18 PM
Joined: Dec 2004
Posts: 1,717
Rancho Cucamonga, Calif.
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PUNK Offline
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Rancho Cucamonga, Calif.
Thats a fantastic budget camshaft! We used it in my brothers first small block. It shifted at 7200rpm with a 3.79 stroke. It also had box stock edelbrock cylinder heads and an M1 manifold. The car went 11.09 @ 118mph with that cam. With a 3.58 stock stroke 360 it should be more like 7400-7500 RPM with the similar parts used. It sounded great as well. Im not sure how well it would work in a heavy vehicle though.

10.53 @ 125mph. 1.37 60 foot. Caltracs and Monoleafs, AFCO shocks.

Heads by INDIO MOTOR MACHINE; IMM.
CP Pistons, PC Carbs.
Re: mopar cam 557? [Re: PUNK] #561090
12/23/09 09:29 PM 12/23/09 09:29 PM
Joined: Oct 2004
Posts: 5,618
long island NY
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Ari440 Offline
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what compression would be mininum for the 557 cam ?

10.1 good ?

1.39 9.85 - 137 mph
Re: mopar cam 557? [Re: onebadstepside] #561091
12/23/09 09:33 PM 12/23/09 09:33 PM
Joined: Jul 2006
Posts: 4,595
On the south side of Nowhere
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S/ST 3040 Offline
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Since I believe the DC/MP Solids all come from the same lobe "family"........

First the advertised duration is incorrect (for what we're all used to)

The seat to seat duration is given @ .015" not .020"

To find duartion @ .020", subtract 8º from what MP tells you.

To find duration @ .050", subtract 32º(intensity)from the answer you got from above.

So, a 296º-.557" is really 288º @ .020"/256º @ .050"

312º-.590.........304º @ .020"/272º @ .050" and so on.

https://board.moparts.org/ubbthreads/favl...amp;postmarker=
Re: mopar cam 557? [Re: S/ST 3040] #561092
12/23/09 09:49 PM 12/23/09 09:49 PM
Joined: Jan 2003
Posts: 526
orange,tx
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onebadstepside Offline OP
mopar
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orange,tx
Sounds like this cam is actually bigger than the advertised numbers.What makes cam pull so high in the rpm?

Small blocks rule!!!!!
Re: mopar cam 557? [Re: S/ST 3040] #561093
12/23/09 09:52 PM 12/23/09 09:52 PM
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
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Sport440 Offline
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Canton, Ohio
In the MP book they say to use .850 x advertized duration to find approximate .050 numbers for cams in the mild range.

It works pretty good for the most part up to the MP .590 cam

For me the MP cams below matched the .850 math

.484 @ 284 = 241 @ .050
.509 @ 292 = 248 @ .050
.557 @ 296 = 251 @ .050

and actually measured the same or very close.

But the MP .590 didnt

.590 @ 312 = 265.2 @ .050, it actually measured 272 @ .050


Reguardless, I like the All the MP cams above, the MP .557 is a good one. My measurements above were on the BB cams only. I assume, the SB lobe profiles would be the same. mike

Last edited by Sport440; 12/23/09 09:57 PM.
Re: mopar cam 557? [Re: Sport440] #561094
12/23/09 10:02 PM 12/23/09 10:02 PM
Joined: Jul 2006
Posts: 4,595
On the south side of Nowhere
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S/ST 3040 Offline
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My old 284º/.528" measured 244º @ .050"

The last 296º/.557" I checked was 255 and some change.

I have a 284º/.484" hydraulic but, I never plotted the lobes on it.
Re: mopar cam 557? [Re: S/ST 3040] #561095
12/23/09 10:45 PM 12/23/09 10:45 PM
Joined: Oct 2008
Posts: 1,015
Down South
DaKuda Offline
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I had this cam in a 340. TRW stock replacement pistons. Box STOCK edelbrocks with 1.5 rockers. Went NO faster over 6000 rpm. Anything over that was just revving. Went 7.20's in the 1/8th in a '68 Barracuda. 3170lbs with 4.56 gear and 5000 stall. Good bracket cam.
Re: mopar cam 557? [Re: DaKuda] #561096
12/23/09 11:43 PM 12/23/09 11:43 PM
Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
Chris2581 Offline
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Jacksonville, FL
Used it in a low compression 440 and went 11.30's.Still have the cam and will use it again in a new engine.Shifted at 6500.

Nautilus Racing-
We use Superformance gaskets and Turbo Action converters/products.
Re: mopar cam 557? [Re: DaKuda] #561097
12/23/09 11:44 PM 12/23/09 11:44 PM
Joined: Jan 2003
Posts: 27,421
Balt. Md
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383man Offline
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Balt. Md
My son and I both use the .557 Mopar cam in our cars. My buddy gave me mine and my brother gave us the one in my boys Dart which is a stock stroke .030 over 400. I shift at 6200 with my 906 headed 440 as it pulls nice up to that and I trap about 6400. I use 4.30's with a 30" tire. My son has Eddy heads on his 400 and he shifts at 6700 and traps about 6800 as he could use more gear (3.91's with a 26" tire) but it is a street car so we wont change the gears. His Dart weighs about 3550 with him in the car and my 63 goes just over 3700 with me in it. Both cars have run 11.40's. It is a nice street/strip cam for a mild build. Ron



Last edited by 383man; 12/23/09 11:46 PM.
Re: mopar cam 557? [Re: Ari440] #561098
12/24/09 12:17 AM 12/24/09 12:17 AM
Joined: Mar 2007
Posts: 3,300
Northern Indiana
Dunnuck Racing Offline
master
Dunnuck Racing  Offline
master

Joined: Mar 2007
Posts: 3,300
Northern Indiana
Quote:

for a small block ,do you happen to know what this cam is at *50 ?



The one I put in a 360 a couple years ago measured 255 @.050.
The car was shifted @ 6000 and went through @6200.Went a best of 11.78 in a 3400 pound street car.360 with ootb Edelbrocks.
The best street/strip small block cam I have personally ever used.

www.dunnuckracing.com
Re: mopar cam 557? [Re: Dunnuck Racing] #561099
12/24/09 12:26 AM 12/24/09 12:26 AM
Joined: Oct 2004
Posts: 5,618
long island NY
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Ari440 Offline
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long island NY
I will be putting a 340 together for a freind

10.1 comp , 540/235 (not sure), J head 2.02 m1 750carb

would the 557 be a good upgrade for this 340

its on a budget / low key combo


557 with 1.6 ratio rockers ,whats the lift ?

1.39 9.85 - 137 mph
Re: mopar cam 557? [Re: PUNK] #561100
12/24/09 12:28 AM 12/24/09 12:28 AM
Joined: Apr 2003
Posts: 799
north west LA
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W2DODGE Offline
super stock
W2DODGE  Offline
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Posts: 799
north west LA
Quote:

Thats a fantastic budget camshaft! We used it in my brothers first small block. It shifted at 7200rpm with a 3.79 stroke. It also had box stock edelbrock cylinder heads and an M1 manifold. The car went 11.09 @ 118mph with that cam. With a 3.58 stock stroke 360 it should be more like 7400-7500 RPM with the similar parts used. It sounded great as well. Im not sure how well it would work in a heavy vehicle though.



thats a bunch more RPM than that cam likes

my 69 dart 2970 lbs W-2 318 only turned 6,700 RPM to run 10.9s @ 121 the same cam in my 360 liked about 6,600 RPM ran 6.6s @ 104 1/8th its a nice cam makes good power for what it is and is verey mild manered if you want to run it on the street
Re: mopar cam 557? [Re: Ari440] #561101
12/24/09 12:29 AM 12/24/09 12:29 AM
Joined: Apr 2003
Posts: 799
north west LA
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W2DODGE Offline
super stock
W2DODGE  Offline
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Joined: Apr 2003
Posts: 799
north west LA
about .594
Re: mopar cam 557? [Re: W2DODGE] #561102
12/24/09 12:32 AM 12/24/09 12:32 AM
Joined: Oct 2004
Posts: 5,618
long island NY
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Ari440 Offline
master
Ari440  Offline
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long island NY
Quote:

about .594




thank you JOHN

1.39 9.85 - 137 mph
Re: mopar cam 557? [Re: Ari440] #561103
12/24/09 12:47 AM 12/24/09 12:47 AM
Joined: Mar 2007
Posts: 3,300
Northern Indiana
Dunnuck Racing Offline
master
Dunnuck Racing  Offline
master

Joined: Mar 2007
Posts: 3,300
Northern Indiana
Quote:

I will be putting a 340 together for a freind

10.1 comp , 540/235 (not sure), J head 2.02 m1 750carb

would the 557 be a good upgrade for this 340

its on a budget / low key combo


If you already have it,I would definately use it.
Mine was 10.3 to one,for what it's worth.

www.dunnuckracing.com
Re: mopar cam 557? [Re: Dunnuck Racing] #561104
12/24/09 01:06 AM 12/24/09 01:06 AM
Joined: Feb 2003
Posts: 1,730
Red Deer, Alberta
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bill_greenwood Offline
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Red Deer, Alberta
An alternative is the 284/528 with 1.6 rockers. I'm super tickled with mine.

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