Standard 383 vs 383 roadrunner engine

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  1. Terry Hauck

    Terry Hauck Choadicus

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    I have a 69 383 4 speed roadrunner. I was told everything is original but the engine. They said it is a correct engine but not numbers matching. That's fine, kept the cost down.
    My question is are the internals, crank rods pistons....., the same in a standard 383 as in a 69 roadrunner engine just add the cam HP heads and exhaust manifolds? I can see red, turquoise and hemi orange on the block. I want to replace the intake carb cam and add headers but not rebuild the whole engine unless the internals are not real roadrunner engine internals. Thanks
     
  2. 69hemibeep

    69hemibeep Sponge Bob Square Wheels

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    Rotating assembly is the same with a windage tray added between the oil pan and block
     
  3. Terry Hauck

    Terry Hauck Choadicus

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    Thanks Old Angry White Guy. That will make things a lot easier.
     
  4. Russ69Runner

    Russ69Runner Well-Known Member

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    Dose the motor have the RM in the serial number on the block. :thumbsup:
     
  5. Terry Hauck

    Terry Hauck Choadicus

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    No RM. 2468130 11 is all I see.
     
  6. droptop

    droptop Well-Known Member

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    Windage tray, camshaft, carb, and exhaust manifolds are the biggest items. I believe the advance weights are different in the distributor also.
     
  7. RRDon

    RRDon Member

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    Don't forget higher compression. I believe it was about 10.1 to 1. The 383 Road Runner engine (68-70) was very different beast than the standard 383's, even the 4bbl versions. A well tuned stock RR engine would leave no doubt in your mind you were driving a high performance muscle car. Many Goodyear Polyglass tires went up in smoke in my original 70 Road Runner ;)
     
  8. droptop

    droptop Well-Known Member

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  9. Russ69Runner

    Russ69Runner Well-Known Member

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    I got a non number matching 383 in my car. Don't think that will hurt the price of the car in the end. Motor's do blow up and have many other problems. So sometimes a different motor will be put in a car. So that being said watching the car restore show's with LS motors and all being put in them. They bring in a good price. Have fun with that runner. Russ. :steering:
     
  10. Terry Hauck

    Terry Hauck Choadicus

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    The numbers I have researched on my block tell me it is a 383 B from 59-71. They are 2468130 11. I have heard the rotating assembly is the same in all 383s. The cam, heads, intake, carb, exhaust, windage tray make up the 383 Roadrunner engine. I have ridden in a challenger with a 383 Magnum and what a difference. Is a 383 Magnum the same as a 383 Roadrunner engine?
     
  11. dmartin

    dmartin Well-Known Member

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    Yeah them LS motors will give you the power and performance but I like the old school originality and looks and the sound of the old combustible engines at least you don't have to be a certified mechanic to work on it
     
  12. angrymike

    angrymike Member

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    I have a 69 hp 383 out of a runner, been sitting 30+ years, in Ohio.
    If interested let me know here.
    The heads might need some work, but it'll run like a camp when you get it on the road. I'll be moving soon, 1 year 1-1/2, I have no use, you can get it on the cheap.
     
  13. Terry Hauck

    Terry Hauck Choadicus

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    Hell yeah. I'm out in California. If we can figure a way to get it out here that would be great. How much do you want? Send pictures if you can.
     
  14. Palmer Moe-par 68

    Palmer Moe-par 68 Active Member

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    No. The difference between the magnum and roadrunner engine is the cams. The magnum just had a 383 cam where as the RR has the 440 cam (a bit thumpier).
     
  15. cbusters

    cbusters Member

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    There was also the positive deck height pistons that raised the compression just a bit when Plymouth changed to the open chamber heads. Doubt those could be found any longer and not many will even remember the trivia.
     
  16. Terry Hauck

    Terry Hauck Choadicus

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  17. Terry Hauck

    Terry Hauck Choadicus

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  18. Terry Hauck

    Terry Hauck Choadicus

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    Angry Mike where did you go. I would like to get the engine. Write back. Thanks
     

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