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  1. 6

    tach irregularity

    Anyone experience this? I was out today and noticed my tach was spiking up and down intermittently. Then was normal again. When it happened i was driving steady at 40mph and approx. 1500 rpm. The engine was steady and normal. All connections are tight I have a 69 440- running off an...
  3. 6

    69 Roadrunner - Replacement Cylinder Heads

    I'm getting bored and need advise. Thinking about swaping out the 906 heads i have in a 69 roadrunner (440 auto) with new ones. Nothing wrong with the old ones. Just looking for a bit more power. Is it worth doing or one of those "aint broke dont fix it " items? If worth doing, can you...
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