What heads do I have?

Magnum Engine Swaps

  1. Super Sleeper

    Super Sleeper Well-Known Member

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    Howdy! I've been posting on the early A body forum about the 66 Valiant I inherited from my brother. I am having to learn Mopar so please bear with me. The engine block has a 53020006 casting no. and the pushrods are hollow and oil the top end. It is using an LA-style intake so I have to figure out just what the heads are. Here's a picture of what I've got. What should I look for to ID the heads? Thanks - Jim
    49217968486_7865df820b_o.jpg 20191214_075125 by Jim Harris, on Flickr
     
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    • dano

      dano Evil Handy Man

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      Factory Iron. Without the part number and/or pictures of the ports it would be hard to tell. Basically you have 273/318 heads with small ports and 340/360 heads with larger ports and valves. Some 318's have 360 heads on them. Some 273's have adjustable rockers and mechanical cams.

      According to this you have a late LA 360 roller cam block. So probably 360 heads, possibly 308's which are a good head.

      Help Identifying this Block

      Looks like someone cut that car for headers at some point and no provisions for heat. It has electronic ignition conversion but I don't see the ECU. Whats the history of this car?
       
    • toolmanmike

      toolmanmike FABO Staff Staff Member FABO Gold Member

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      In 66 you could have 178's 234's or 920's. No worries though. They all have the same sized valves,ports, and chambers.
       
    • toolmanmike

      toolmanmike FABO Staff Staff Member FABO Gold Member

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      Looks like a factory dual point distributor from here.
       
    • dano

      dano Evil Handy Man

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      But the the voltage regulator is for electronic ignition, or its the same one Mopar used in their conversion kits.
       
    • toolmanmike

      toolmanmike FABO Staff Staff Member FABO Gold Member

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      An electronic voltage regulator has nothing to do with the ignition system. That blue regulator looks like a electronic replacement for the old points type regulator.
       
    • Super Sleeper

      Super Sleeper Well-Known Member

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      Lots of history! My brother drag raced it with 273 and 340 CID engines from 1968 thru the early 80's. He swapped it back to a stock appearing configuration leaving only the big gaps in the fender aprons. Here's what it looked like in early '70s trim
      49173117752_e41fc65681_o.jpg IMG_008 by Jim Harris, on Flickr

      Also, see my avatar.

      So how can ID the head part #? I thought there were supposed to be casting numbers on the intake runners? I see a number, possibly 622? The have rocker shaft oil passages - so I guess that means that the block is set-up for LA oiling. The pushrod holes are large.
       
      Last edited: Dec 17, 2019
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      • 69FBCuda

        69FBCuda Life in the Fast Lane

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        Link to photos is in the 1st post
         
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