ALERT!! SOUND THE ALARM!!..

Mopar Racers Forum

  1. toolmanmike

    toolmanmike FABO MODERATOR Staff Member FABO Gold Member

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    • 318willrun

      318willrun Utube channel 318willrun

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      when I full inspect mine, i'll report back. Any clean up, or replacement parts I'll report the "what's and why's". I expect good castings, and I almost went with the bare casting for 219 each. But I want to form an opinion, good or bad, by disassembly.
       
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      • j par

        j par Well-hung Member

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        Are you going to get on them here pretty quick? The trucks got me bog down for the next month at least.. I want to pull my motor and transmission and put it up on the stand and do this. I'm contemplating a different clutch depending on what mine looks like when I pull it out...
         
      • j par

        j par Well-hung Member

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        I'm strongly contemplating that intake manifold for $135 but if I was going to pay the $700 for the heads I would definitely pay the 820 and get the manifold as well.. I've wanted one of those to do a magnum swap..
        This morning I was contemplating the hundred and $22 cam that I need to buy for this 318 along with timing chain and other things. I could pull one of the 318 out of one of the Durango's for the truck and do the Magnum swap cheaper seemingly then buying a cam and lifters..
        I had to scratch that plan as it was not keeping it simple..
         
      • 318willrun

        318willrun Utube channel 318willrun

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        they were supposed to be in stock, so I should have them next week. Not sure what I'm even going to put them on, but I'll be impatient to see what I find in the disassembly.
         
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        • fishmens67

          fishmens67 Well-Known Member

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          Have the Dremel ready when you open them up, it will be obvious where gains can be made.
          Have fun with a great winter project. I believe the SM's are a good investment.
           
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          • DrEamer

            DrEamer I suffer from cars on the brain!

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            Summit is not as competitive as they use to be. They use to match the Jeg's spending discounts on their main page of their website. I guess you have to ask for it now. Kind of a pain, but Summit has some exclusive parts that Jeg's can't get, so maybe they don't want to discount their own parts if they don't have to.
             
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            • 318willrun

              318willrun Utube channel 318willrun

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              May buy a set of the big block while the sale is on as well.... we'll see.
               
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              • j par

                j par Well-hung Member

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                Please do tell us about the obvious games and where to stick the Dremel...lol..
                I know I left myself wide open.. pun intended...
                 
              • K.O. SWINGER

                K.O. SWINGER Well-Known Member

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                I took advantage of a Black Friday sale about 5 years ago from Speedmaster and got a set of those heads they have proven to be a hot little upgrade it was hard for me to move away from X head's after many years of great service and all the time that I put into them but I have no regrets in going to the Pro Comp head
                 
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                • j par

                  j par Well-hung Member

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                  Thank you for that post! That is exactly where I'm at now.. I have quite a bit of time and money into my 596 heads and curious to what my new results will be with the Speedmaster heads.. I know one thing they're going to be 50 pounds lighter!...
                   
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                  • yellow rose

                    yellow rose Doctor of Thinkology.

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                    That's it. I'm buying flex steel stock. I'll make billions off those bending, flexing heads.







                    I'm rich....filthy rich!!!
                     
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                    • K.O. SWINGER

                      K.O. SWINGER Well-Known Member

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                      Yes your back will love it LOL I saw a small but noticeable gain to all RPM range. I run a 1969 340 forged bottom end with 242 at 50 camshaft with a t a six-pack top end I believe these heads will support 450 horsepower without porting, and maybe a little more
                       
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                      • j par

                        j par Well-hung Member

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                        Did you get cnc-ported?..
                         
                      • 318willrun

                        318willrun Utube channel 318willrun

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                        small but noticeable gain compared to stock X heads? or did you X heads have work done to them?
                         
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                        • pishta

                          pishta I know I'm right....

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                          Do me a favor and knock that lone little casting core shift off the #1 exhaust port! OCD is kicking in.....
                          port.jpg
                           
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                          • TurboGLH

                            TurboGLH Well-Known Member

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                            The Chinese hardware makes me uncomfortable, but the price for two bare CNC heads was only a couple hundred less than the loaded ones, so I figured it was work a shot. I've been waiting on a good deal on a set of trick flows, but I also want to have the car back together in the spring, and a new boiler was higher on my list of priorities than a better set of heads.

                            A disassembly, clean and check, plus a geometry kit from B3 will be sufficient I hope.
                             
                          • Lefty71

                            Lefty71 Well-Known Member

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                            Sweet, thx. I picked up two cast aluminum pans for 70 a piece.:thumbsup::thumbsup:
                             
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                            • K.O. SWINGER

                              K.O. SWINGER Well-Known Member

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                              Just clean up work and small amount of porting to the intake side, more time spent on the exhaust ports a very good valve job and top shelf valves for the day make no mistake they were worthy X. But not a full race port.
                               
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                              • K.O. SWINGER

                                K.O. SWINGER Well-Known Member

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                                My head's are not cnc'd flow numbers that I have been able to inquire put them at around 250 @500 they have worked for me well Screenshot_2019-11-28-10-06-43.png
                                 
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                                • j par

                                  j par Well-hung Member

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                                  well it took me a couple hours but I finally figured out what you're talking about LOL..
                                  I was thinking if I grind that whole Corner out make it a square hole there'd be no room left for the headers to seal and then the header is shaped that way as well! LOL now I think I get what you're talking about.. actually opposite of all that..
                                  Not the sharpest tool in the shed but I'm trainable...
                                   
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                                  • yellow rose

                                    yellow rose Doctor of Thinkology.

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                                    If I was going to go OCD on that area, I'd just start a the top of that angled side of the port and just blend up. I wouldn't go down.

                                    I'd bet a lot of money the air (at least at some point in the lift curve) will be flowing back into the port right there.

                                    So making it bigger across that area will make that worse.
                                     
                                  • Avispa

                                    Avispa Well-Known Member

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                                    I don't see any info, are these magnum heads? the pic shows the magnim bolt pattern, and what's the dif on the hydr-r and the hydr-ft, and what's the deal on the free intake?
                                     
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                                    • 4spdragtop

                                      4spdragtop FABO Gold Member FABO Gold Member

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                                      Ive been watching Summit "waiting". No big sale at all. Crane adjusters, trick flow balancer, edelbrock timing chain set, and a whopping $10 off the Eddy set, that's it. Havent ordered yet. I'm gonna budget next year for sure!
                                       
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                                      • 66fyssh

                                        66fyssh Don't Stop Believin' FABO Gold Member

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                                        Same here Steve. I have $1008 sitting in my Summit cart just waiting for additional savings. Crossing my fingers we'll see more tomorrow.

                                        I need this stuff to finish my 5.9!
                                         
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