We have found gains in power working with the HEI distributor used in the 602 crate engine.
Generally, the distributor that comes with the engine can be modified, or we can supply a unit modified from a brand new crate distributor.
One of the areas we work with is the advance weights, which we machine in-house, and build a rock solid curve that is more dependable than using the stock components.
Prices start at $470
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602 Distributor Modifications