D4B and LD4B side by side pics

Small Block Mopar Engine

  1. Cudabnu

    Cudabnu (3) 64 Val Verts. /6 4spd, 273/904, 318/727

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    Since I am cleaning and painting 1 of each I thought I'd get a few pics. The main thing I noticed is the angled boss of the bolt holes of the d4b for the 64 65 only heads, everything else appears the same, couldn't really compare the ports as the ld4b is ported.
    20200903_092826.jpg 20200903_092831.jpg 20200903_092834.jpg 20200903_114859.jpg 20200903_114902.jpg 20200903_114908.jpg
     
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    • toolmanmike

      toolmanmike Moderator Staff Member FABO Gold Member

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      Great idea. The intakes should be the same except for the hole size and angle. The D4B is closer to vertical where as the LD4B the bolt holes are 90° to the intake surface. I will make this thread a sticky so the information is easy to find.
       
      Last edited: Sep 3, 2020
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      • Cudabnu

        Cudabnu (3) 64 Val Verts. /6 4spd, 273/904, 318/727

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        You can actually see little "pads" were the bolts holes are on the D4B, and there is an extra mounting point and plugged hole on the LD4B on the pass side
         
      • gregcon

        gregcon Well-Known Member

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        People who paint gasket surfaces......
         
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        • Cudabnu

          Cudabnu (3) 64 Val Verts. /6 4spd, 273/904, 318/727

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          Yes, because it sooo hard to clean off! :rofl:
          It literally takes less time to clean off the surfaces than to tape them off and trim the tape so you can get to every surface. You should try it sometime, it will open your eyes to a whole new world!
           
          Last edited: Sep 4, 2020
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          • RandyB

            RandyB Well-Known Member

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            What method did you use to clean them befor you painted? I’m about to do the same and just wondering.
             
          • Cudabnu

            Cudabnu (3) 64 Val Verts. /6 4spd, 273/904, 318/727

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            I first had to take all the old paint of with gel paint stripper, then used a degreaser, hosed them off good, set in the sun to dry, then 2 light coats of paint followed by 1 more heavy coat. I used VHT Chrysler red
             
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            • RandyB

              RandyB Well-Known Member

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              Awesome! Thanks for the fast reply
               
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              • Dartsun

                Dartsun Mopar Dude

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                Oven cleaner works real good also, use gloves.
                 
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                • gregcon

                  gregcon Well-Known Member

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                  It helps to get the intake as clean as possible. Bone dry. That way, all the overspray you caked up on the gasket surfaces and inside the plenum and ports will stay in place long enough to let you finish the assembly, then come off and blow through your engine once it's running. And cause leaks, too. Most of all, you save at least $2 in masking tape and you can use that money to buy mint flavored condoms.
                   
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                  • cudamark

                    cudamark FABO Gold Member FABO Gold Member

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                    That plug in the LD4B exhaust crossover is probably the result of the add-on STP smog device that was required on some models here in California way back when, and then removed at a later date.
                     
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                    • toolmanmike

                      toolmanmike Moderator Staff Member FABO Gold Member

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                      Nope, power brakes.
                       
                    • cudamark

                      cudamark FABO Gold Member FABO Gold Member

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                      You're not going to get any vacuum from the exhaust crossover.
                       
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                      • toolmanmike

                        toolmanmike Moderator Staff Member FABO Gold Member

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                        Hey Mark! #7 intake runner.

                        20200905_160125.jpg
                         
                      • cudamark

                        cudamark FABO Gold Member FABO Gold Member

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                        They both have a port there. I was referring to the one in the exhaust crossover on the one. That wasn't factory. Someone drilled it.
                         
                      • toolmanmike

                        toolmanmike Moderator Staff Member FABO Gold Member

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                        I see it now. Heat stove for the choke? It has a cast boss under it.
                         
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                        • Cudabnu

                          Cudabnu (3) 64 Val Verts. /6 4spd, 273/904, 318/727

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                          I'll try to get a close up pic of it when I get home from camping

                          20059.jpeg
                           
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                          • str12-340

                            str12-340 FABO Gold Member FABO Gold Member

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                            I use a bead blast cabinet to get manifolds really clean and even get any crud in the water and crossover passages out.
                             
                          • Dave_J

                            Dave_J Well-Known Member

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                            I too do not mask off. I fill the port with balled up paper and just spray. Then after paint dries, a flat Mill Ba$tard file to the gasket faces.
                            No Condoms needed, I know where my Manifolds have been.
                             
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                            • 70 Buster 340

                              70 Buster 340 Carbon Footprint FABO Gold Member

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                              My LD4B has the exhaust crossover port w/flush plug and it looks completely factory production.

                               
                            • 1Badcolt

                              1Badcolt Well-Known Member

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                              Nice vintage intake thanks for the images etc !
                              Always good seeing some old stuff.
                               
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