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FWIW...my 383 was doggy with the big open chamber 906 heads. With a set of 516s on her now she is a totally different animal and she is running the .474 cam. It DEFINITELY puts you in your seat and will annihilate the tires from a stop.

So my says that you may be very low on compression and that is really all you need to work on.



stock pistons ?

With a Charger born in Chrysler assembly plant in Valencia, Venezuela