Upgrade intake manifold?

Discussion in 'Small Block Mopar Engine' started by Dave Haertel, Jul 12, 2018.

  1. Dave Haertel

    Dave Haertel Well-Known Member

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    Ok, so I currently have a dual plane Weiand Action Plus 8007 that was on the car when I purchased it. Took it off to solve a problem with the new distributor not seating correctly, needed to check the cam and oil pump gears.

    Now that it's off, and I can probably spring for a new intake if I wanted to, any suggestions on whether it's worth it to spring for an Edelbrock performer air gap? Or another intake you'd suggest?

    Details:
    340/360 (long story, still researching but believe it's actually a 360, not a 340 like I was told).
    Mild cam, not sure which one as it was built when I bought it
    Heads unknown as well due to same as above
    New 650cfm Holley 4 barrel.
     
  2. gliderider06

    gliderider06 Well-Known Member

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    Thats already a good intake. May need a little bit of port matching to maximize its true potential.
     
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    • 72Dart6pack

      72Dart6pack Harder Better Faster Stronger.

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      Go this route.

      0115161704.jpg
       
    • Dave Haertel

      Dave Haertel Well-Known Member

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      Is that a true T/A 6 pack manifold or aftermarket? I always heard they're too finicky to get into sync (the carbs)? Or is that an old wives tale?
       
    • Dave Haertel

      Dave Haertel Well-Known Member

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      Will have to find out which heads I have, guess I'll have to look around to find some numbers on those too.
       
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      • crackedback

        crackedback FABO Gold Member FABO Gold Member

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        A good 4 barrel intake and carb will mudhole a 6 pack. Looks like tarzan.... LOL

        Keep what you have, save a bunch of money and get the tune up right. :)
         
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        • Dave Haertel

          Dave Haertel Well-Known Member

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          Thanks, I've been told it's a good intake. But the performer air gap seems to be the one that everyone talks about.
           
        • Valkman

          Valkman Well-Known Member

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          Stick with the weiand you probably won't get any real gains using anything else with the engine as it is. Spend your money elsewhere
           
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          • Dave Haertel

            Dave Haertel Well-Known Member

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            Thanks. At some point in the next year, I'll be doing a top end on it, but figured I could do this one quick thing while it's off if it would have been worth it. The consensus seems to be to keep it.
             
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            • 72Dart6pack

              72Dart6pack Harder Better Faster Stronger.

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              It is a real T/A 6 Pack manifold. This is what it looks like all done.

              IMG_25071.jpg
               
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              • Dave Haertel

                Dave Haertel Well-Known Member

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                Dead SEXY. Beautiful.
                 
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                • 72Dart6pack

                  72Dart6pack Harder Better Faster Stronger.

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                  408 6 Pack. It took a lot of work to get it to this level.

                  IMG_24951.jpg
                   
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                  • rumblefish360

                    rumblefish360 so close yet so far away

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                    Wives tail. The people that tell you that ether never had one or can’t tune a carb properly.


                    While you do not nearly have enough information about your engine , never mind about the rest of the car and what your doing with it.... Insuggest sticking with the intake you have now. A switch to the Edelbrock doesn’t mean you will instantly make more HP or Tq.

                    We have a class racer here that always states;

                    “In my application the Weiand et’s better than the.....”
                     
                  • Dave Haertel

                    Dave Haertel Well-Known Member

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                    Thanks, yea, unfortunately I bought the car with the motor intact and it was a flip sale so I have no real idea what's in the motor. That's one of the reasons I plan on saving for the parts to rebuild it in the next year or two.

                    As for plans for the car, at the moment it's my driver and I anticipate it staying that way. I'm not interested in taking her to the strip, just having a peppy fun to drive small block that will light them up when I want and give me the adrenaline boost when I stomp her. No real idea as far as numbers go but I know these can easily get into the 350 plus both HP and Torque so I'm assuming at least that. I'll be doing some research on what to buy to get there and maybe I can re-use some of the parts, maybe not.
                     
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                    • 12many

                      12many Well-Known Member

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                      Why not maximize what you have already? Bet that intake is ootb untouched. Carb a/f ratio and jetting dialed in? Ignition timing and curve ideal? Save the cash, port that thing! And maximize what you have. You'll gain more than you'd think. If you need pictures of work that can be done to one of those I got 'em. There's alot of room for improvement.
                       
                    • Dave Haertel

                      Dave Haertel Well-Known Member

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                      Seen a couple of YouTube's on porting them wasn't sure about the actual results and how much to truly take off.
                       
                    • 12many

                      12many Well-Known Member

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                      All I did on mine was round/smooth the runner sides and roof of each from the plenum junction, and port matched and smoothed the runner roofs about 1-1/2" in. Smoothing and rounding, not really enlarging (other than the gasket match) is easy, and safe I'd say, and when you study that intake you'll easily see where the work needs to be done. I leaned heavily on David Vizard articles and others about typical proven results from simple clean-up of intakes without getting into extensive porting.
                       
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                      • Dave Haertel

                        Dave Haertel Well-Known Member

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                        Thanks, appreciate the tips. I'll have a look. Probably not putting it back together until this weekend so there's time to get a plan together.
                         
                      • pishta

                        pishta I know I'm right....

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                        Just look at the balancer. A Symetrical balancer (no weird off kilter weight cast in) would tell you if its a 273/340 or a external balance 360. Or you can always look on the passenger side of the block under the exhaust manifold for a big 340 or 360 casting.
                         
                      • 318willrun

                        318willrun Stomper 4x4... we kept energizer in business

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                        I just did this thread...
                        Weiand Action Plus vs Edelbrock RPM

                        Also, no researching needed to see what motor you have. Crawl under the drivers side and look... it will say 340 or 360 or, or 318 :D. Or, you can look under the drivers head on the front of the block. Sometimes very hard to read here as I've seen the numbers were faintly stamped.
                         
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                        • rumblefish360

                          rumblefish360 so close yet so far away

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                          Driver side of the block is easiest. The numbers are embossed (cast in/raised)
                          Look at The sequence of numbers, at the end of the long sequence, the displacement is cast in. And then a dash in a few numbers and a dash and stuff like that.
                           
                        • Dave Haertel

                          Dave Haertel Well-Known Member

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                          So the research question is because I had a mechanic swap the steering column for me, I’m just too old, and outta shape to be laying upside down and I probably would have had to pull the drivers seat anyway. So while he had it I had him spec it and there are 2 stamping done says 340 one says 360. I’ll try and get pictures of them both to upload maybe someone can help sort it out
                           
                        • 318willrun

                          318willrun Stomper 4x4... we kept energizer in business

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                          Drivers seat?? you are supposed to be looking at the driver's side of the engine block. Anyone that changes oil for you can let you know what it says.... OR..... look under the drivers head at the front of the engine block. Flashlight and a wire brush may bring the stamp to light :)
                           
                        • nm9stheham

                          nm9stheham Well-Known Member

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                          Here is what you are looking for; it is under the exhaust manifolds way down on the side of the block. Use a mechanic's mirror (on an extendable stick) and a flashlight if you can't get underneath. The last 3 digits are separated from the rest and will be 360 or 340.

                          How to ID a Small Block Engine Block:
                           
                        • Dave Haertel

                          Dave Haertel Well-Known Member

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                          No, what I was saying is I'm too big to lay on the floor and change the steering column out, I'd have to take out the seat to fit. The mechanic that did the steering column did the ID and said it was a 340, I never followed up, but when I looked at the front stamping it said 360, thus the 2 different identifications. I'm under the hood today to put the manifold back on so I'll get a definite ID before hand obviously. I'll upload the pictures of the stampings.
                           
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