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  1. 340inabbody

    Rocker Arm Shaft End Cap Freeze Plugs

    Guy looks like the primary source of Mopar SB rocker arm shaft end cap freeze plugs are no longer being produced. Mancini and Chrysler dealers are all out. I found a working solution that I wanted to share with you all. It’s a 5/8 cap with roughly a .235” height. Can get anywhere as they are a...
  2. 340inabbody

    Solid lifter initial valve lash adjustment

    so I have read how to set solid lifter valve lash hot. But on an initial set up how to you set the lash cold before the first fire to get them close? Is it the same method as hot then tweak them in after the engine gets to operating temp?
  3. 340inabbody

    273 Rocker Arm Oiling

    How does the oiling of the pushrod ball stud work on the 273 rocker arms? I have inspected mine and don’t see any path that the oil can get through. There is a hole in the rocker arm yes. But the adjuster has some sort of interference fit with the adjuster screw. There is no channel relief in...
  4. 340inabbody

    Rear Drums Only Free in Reverse Direction?

    Recently rebuilt my rear drum brakes. Everything seemed fine HOWEVER when I tighten up my wheels lug nuts my wheels will not move in the forward direction. They do move in the reverse direction. Again ONLY when the wheels/drum get tightened down. Something must be binding in compression. Any...
  5. 340inabbody

    Trans Linkage Reinstallation

    When reinstalling the trans linkage on my 904 is there a particular way to hook up the linkage? For example I put the trans in neutral and then put the shifter in neutral and just attached them. This seems like a basic way to do this but I am having some issues that I am working through. Thanks
  6. 340inabbody

    Identify coating on my 273 rocker arms

    This isn’t a paint and I doubt a stain. Is this some sort of coating? It’s not on the inside machine surface. What coating is this? Was this done at the factory?
  7. 340inabbody

    Nominal DC Current Draw?

  8. 340inabbody

    [Found!] 273 Rocker Shafts w 2 holes per Rocker

    Ideally looking for a clean set of rocker shafts that have the two holes per rocker set up and banana groove. Like pictured below.
  9. 340inabbody

    Source for rocker shaft end seals/freeze plugs

    I spoke to Chrysler and they are not producing the rocker shaft pressed end seals/freeze plugs. They have not said that they will again. Spoke with Mancini Racing. They have been out of stock for 8 months to a year. No one has stock left anywhere I found a dorman part that might fit. Anyone...
  10. 340inabbody

    340 Oil Priming Question First Start

    Hey guys I am in the process of starting up the old 340 that’s been sitting for 5 years after body restoration. 1. 5 quarts of 20-50 added to the full line on the dipstick 2. All plugs removed. 3. Dizzy pulled 4. Manual drill with hex priming stick 5. 2000 RPM right angle drill 6. Oil pressure...
  11. 340inabbody

    10” Drum Spring Configuration

    looks like some spring kits have changed the spring configuration from stock? Looks like there used to be 2 identical yellow return springs per brake but now the kits come with 1 yellow and one shorter black spring. See both photos. The shorter spring must also go into a different place on the...
  12. 340inabbody

    Rear Drum Parking Brake Cable Attachment

    Hey guys I have been trying like hell attaching the parking brake cable end to the lever inside the drum assembly with no luck. I can’t seem to compress the spring on the cable to allow the nut to attach to the lever. What am i missing or doing wrong?
  13. 340inabbody

    Can’t find neutral on my 904

    Background: Been restoring my 1970 Satellite which was operational prior to restoration. Drivetrain never removed. Steering column was out. I connected my shifter to the trans but when put in neutral the wheels won’t spin but for a few inches then hard stop. Disconnected the shifter and...
  14. 340inabbody

    Is 20W-50 too heavy for my 340?

    I have some 20W-50 VR1 “High Zinc” in my shop and am planning an oil change. Is this too heavy? Information: Flat tappet 340 High compression 12:1? Older engine oil pressure was on the lower side if I recall correctly maybe 30 psi but don’t recall what oil was used. Lives in Phoenix and it’s...
  15. 340inabbody

    Holley Double Pumper Question(s)

    Hey guys I am not very familiar with Holley’s and carbs for that matter. I am in the process of getting my 340 running again but have some questions on my carb. Is the lever with the black spring that I am pointing to connected to the throttle linkage the secondary throttle body control?
  16. 340inabbody

    Clear float bowl plugs

    Does anyone use those clear see-through float bowl plugs? Seems like that’s a great idea rather than spilling gas anytime you wanna check float height. But I’m not sure if they work very well. Oh and are these used just as a diagnostic tool or run permanently?
  17. 340inabbody

    Thermostat Housing sizes

    So I am in the process of replacing my intake manifold. I noticed my M1 thermostat housing and thermostat is smaller than my replacement manifold. It’s significantly larger. M1 hole diameter 1.5” bolt sep 2.8” New Manifold 2.1” “ 3.25” What gives? Is the new one set up for...
  18. 340inabbody

    Paint it, Clear it or Let It Rip?

    Well?
  19. 340inabbody

    Intake Manifold Head Hight Alignment

    Quick question: If my intake manifold fits perfectly with no gasket but then I add my two intake gaskets and the manifold is too high the: Would the right amount to have the machine shop cut off on each side be as simple as the thickness of the gasket?
  20. 340inabbody

    Can you identify this motor?

    Not sure what motor this is. Can you identify it? Looks like either a 5.2 or 5.9 magnum automatic?
  21. 340inabbody

    Hardened Valve Seat?

    Is there a date/year for when Mopar started hardening head valve seats for the 340?
  22. 340inabbody

    Vacuum Secondary Conversion

    So I have a low profile (and it needs to stay low profile) mechanical secondary and carburetor set up on my 340 automatic. Running a 6AL box with a MSD Billet 8534 non vacuum dizzy and a 4150 Double pumper with mechanical secondaries. I understand this is not the best set up for drivability in...
  23. 340inabbody

    How to measure Intake Manifold Height

    Anybody knows how Edlebrock measures Intake Manifold Height? Is it from the top of the base or from the bottom? Or is the measurement based on how it sits in the block? If so where is the reference point? 7576 Air Gap 5.35” 2176 Performer 4.63” 7176 RPM. 5.35”
  24. 340inabbody

    Intake Manifold Gasket Recommendations

    Anybody have any recommendations on a set of intake manifold gaskets for my 340? I don’t do this enough to know what works better than what…
  25. 340inabbody

    Intake Manifold Bolt size(s)

    Just a few questions regarding LA intake manifold bolt lengths. Are all the bolts the same size or are there two that need to be longer? What length is needed as I am installing an aftermarket aluminum intake (the cheap *** ones for magnum/LA). Will 1” work or do I need longer? Thanks
  26. 340inabbody

    Water Pump to Intake Manifold Connection

    Guys what the best hose to connect this tight turn connecting the water pump to the intake manifold? The hose I was using just wasn’t quite right….
  27. 340inabbody

    Replacing my Intake Manifold Question

    I am trying to drain my coolant before replacing my intake manifold. My 340 coolant plugs wont budge and I don’t want to brake them and have to pull the motor as it would be to tight to drill and tap under there. So I drained from the lower radiator drain **** and also got the rear up as high...
  28. 340inabbody

    Magnum 360 ?

    Hey guys. I might have an option to get a Magnum 360 to play with for my 1970 Sport Satellite. Its drive train is set up for a LA Small Block. Other than an intake manifold and carb, cam what else would I need to make it work? I currently have a 340 in there with headers. I assume the headers...
  29. 340inabbody

    Speedmaster Aluminum SB Heads

    Guys whats the deal with these heads? Anyone use these or have experience with them?
  30. 340inabbody

    LA 340 Intake Manifold

    Hi I thought I would post a new thread on some specific questions I have regarding intake manifold for the 340. My 340 is in a 1970 Sport Satellite. The engine has an unknown cam and 12:1 forged TRW’s and I believe is solid lifter. I plan to rebuild it for the street. I do want around town...
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