Are these adjustable? I know some cant be adjusted, it is a 1970 225 slant six and it sounds like a couple of valves towards the back half of the motor are tapping a little. If they can be adjusted does anyone know or have a link to the proper settings for a stock set up?

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1970 dart swinger \six

Howdy. Yes, you're probably (over)due for a valve adjustment (red text is a clickable link).

Tune-up parts and technique suggestions in this thread.

Carburetor operation and repair manuals and links to training movies and carb repair/modification threads are posted here for free download.

You'll want to get the three books in this thread as quickly as you can, too.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Thanks for those links man good stuff in there, we will try this weekend to get her sounding like a sewing machine. It's only got 89k on the motor.

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1970 dart swinger \six