I've been REAL happy with the Crane ZRi ignition (now FAST XR-i) set up I put in the stock distributor. It installs the same as a Pertronix set up but also includes an adjustable rev limiter for the same or lower price as the typical Pertronix I. The rev limiter comes in very useful when you are more used to rev happy Chevy small and big blocks that can go to 7000 in a tick like I am. I set the limiter to 5100 on the tripower and it has really helped me not over rev and get into valve float. This is also helpful since when we first got it running a couple of the rocker studs liked to back their way out a bit but haven't budged since the limiter was put in place.
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