Anyone using a P4452782AE on 340/360?

Small Block Mopar Engine

  1. xLURKxDOGx

    xLURKxDOGx "An angel fat, at satan's feast"

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    Just curious if anyone out the using or used this cam. Thoughts of putting in my 360 d100 with stock rebuilt bottom end, 596 heads cleaned up and ports matched with 3.23’s.

    Thanks,
    Jake
     
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    • rumblefish360

      rumblefish360 so close yet so far away

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      Specs are better than P numbers.... just sayin my man. BEB, no I’ll go search for it....

      Here it is.....

      Purple Shaft Hydraulic Camshaft & Lifter Kit
      • Chrysler 273, 318, 340, 360
      • Advertised Duration: 268°/276°
      • Centerline: 114°
      • Lift: .429"/.444"
      • RPM Range: Idle to 5800
      ——-——-—

      Stock OEM HP cam installed in 340 engines and 360 4bbl. Engines.
      If you can give the cylinder some squeeze it’ll be great.
      Do we need to talk about this?
       
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      • Slantsix64

        Slantsix64 Well-Known Member

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        Got almost the same camshaft about to swap in to my 360/4 speed this Sunday but the durations is 268/280 .477/480 lift comp cams Camshaft $135.00. For your camshaft you picked since you got an auto I would go with some 3.55s
         
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        • xLURKxDOGx

          xLURKxDOGx "An angel fat, at satan's feast"

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          I had the heads cleaned up and I’m using shim head gaskets so might go up slightly.

          I had a summit cam similar to that and wiped a lobe :/ I’m looking at something smaller since I’ve got 3.23.

          Jake
           
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          • rumblefish360

            rumblefish360 so close yet so far away

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            Nice. We’re they milled at all?
            A half point increase will help yield good results with a iron head. Generally, with a small cam, I don’t like to go past a 9.0-1 ratio. Going higher isn’t a octane issue until you get that bad tank of gas.
             
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            • Wyrmrider

              Wyrmrider Well-Known Member

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              to much duration with 3.23 and stock compression
              stock piston or has motor lower end been rebuilt?
              this is a low lift- low area under the curve cam
              seat to seat duration is more than the 268 (designed for a chevy lifter) comp which is also too much duration
              do you have compression check numbers?
              good news is that MP cam lives forever and it's fater than it looks and works with stock 340 type springs
              need to get a handle on your compression before any cam comments
              headers? AT or 4 speed etc, carb and manifold?
              check Lunati Voodoo line
              and some howards the real mopar cams are flagged in the catalog also some Bullets
              Engle has a good line if you ask as does Crower
              comp not so much
               
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              • rumblefish360

                rumblefish360 so close yet so far away

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                Yup! That’s the stock cam of back in the day designed to run forever without issue for the general public.
                 
              • Slantsix64

                Slantsix64 Well-Known Member

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                If you up The Compression Ratio it Should run great. With a mill of the heads, I milled stock 360 heads .045 no problems at all. Also they have the thin Mr.gasket .028. Shim. With some stall and 3.55 would be best my 360 Has the old Chrysler gears set up which is 3.31 ratio and man they feel like 2.94. 3.55 or 3.91 feels about right with that camshaft.
                 
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                • RustyRatRod

                  RustyRatRod 30 Degrees Outta Whack FABO Gold Member

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                  Get the compression up some and advance the cam down to 108 or 106 ICL.
                   
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                  • xLURKxDOGx

                    xLURKxDOGx "An angel fat, at satan's feast"

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                    I was planning on advancing it 4 degrees.
                    The lower end was completely rebuilt but wiped a love on the cam after a minor comedy or errors :/. Now I’m back searching out something better than stock. I’d heard the 340 cam being suggested but never had good numbers to compare.

                    I had the deck milled more then a clean up and same with the heads. The headgaskets I have are nos 3512719. Hopefully that get me there.


                    Jake
                     
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                    • krazykuda

                      krazykuda FABO Gold Member FABO Gold Member

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                      I would go for it...
                       
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                      • xLURKxDOGx

                        xLURKxDOGx "An angel fat, at satan's feast"

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                        Yeah, more than likely I’ll grab it tonight. Thanks for everyone’s input, it’s much appreciated.

                        Jake
                         
                      • krazykuda

                        krazykuda FABO Gold Member FABO Gold Member

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                        That's not too big... If anything install a set of Rhoades variable duration lifters...

                        Run it with a good dual plane intake and I like the Holley 80457 carb - 600 vacuum secondary...

                        Holley 4160 Aluminum Street Carburetor
                         
                      • RustyRatRod

                        RustyRatRod 30 Degrees Outta Whack FABO Gold Member

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                        It will need more than 4.
                         
                      • Wyrmrider

                        Wyrmrider Well-Known Member

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                        rhoads lifters good idea
                        have we figured out what the compression will be/
                        a 268 MP is longer duration than a 268 comp or lunati or Howard about the same as Engle
                         
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                        • xLURKxDOGx

                          xLURKxDOGx "An angel fat, at satan's feast"

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                          Yeah, the one part I forgot to mention. I have headers and a carter 625. I have a new set of mp lifters and upgraded lunati springs.

                          Jake
                           
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                          • xLURKxDOGx

                            xLURKxDOGx "An angel fat, at satan's feast"

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                            Well, I’ll look into that. Thanks for the heads up.

                            Jake
                             
                          • Wyrmrider

                            Wyrmrider Well-Known Member

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                            remember if you advance you also advance the exhaust open and cut your powerstroke
                            this hurts more in a low compression build
                            just a heads up
                            but about the only way to make a too big cam sorta work
                             
                          • rumblefish360

                            rumblefish360 so close yet so far away

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                            And that cam is not sort of to big by any means.
                             
                          • RustyRatRod

                            RustyRatRod 30 Degrees Outta Whack FABO Gold Member

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                            Well.......and I know you will agree here......."sorta" it is. Were it not for being ground on a 115 LSA, it would be a god bit "bigger" so to speak. It has some duration, there's no denying.

                            And here's the thing about camshaft timing. Advancing the camshaft timing gives more bottom end torque at the VERY SMALL expense of "some" top end torque. While retarding the camshaft timing takes away a "good bit" of bottom end for a "very small" increase up top. So advancing by far has a much better payoff, IMO.
                             
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                            • crackedback

                              crackedback FABO Gold Member FABO Gold Member

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                              Too big... that's a stock 208 @ .050 340 style camshaft. You could put it in a 7.5:1 smogger just fine!


                              MUCH smaller than the voodoo or XE line of cams at .050... not even close.
                               
                            • xLURKxDOGx

                              xLURKxDOGx "An angel fat, at satan's feast"

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                              Since you’re the last person to comment, I have a new set of lunati 73815-16 springs and retainers, you think they would be a bad fit for that cam? Here are the specs.

                              • Outside Diameter (Outer): 1.500"
                              • Inside Diameter (Outer): 1.086"
                              • Inside Diameter (Inner): N/A
                              • Seat Load: 120 @ 1.820"
                              • Open Load: 315 @ 1.250"
                              • Coil Bind: 1.094"
                              • Spring Rate (lbs/inch): 342 lbs/in
                               
                            • Slantsix64

                              Slantsix64 Well-Known Member

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                              Why don't you just run rockauto 340 springs?
                               
                            • xLURKxDOGx

                              xLURKxDOGx "An angel fat, at satan's feast"

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                              I have a new set here and figured I’d poke at the members for some no bs answers.
                               
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                              • RustyRatRod

                                RustyRatRod 30 Degrees Outta Whack FABO Gold Member

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                                Is it that small? I've measured it on the wheel before and came up exactly 10* bigger on the intake and 2* more on the exhaust. I wonder if they grind them all the same.
                                 
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