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 For those who do opt to remove...  For those who do opt to remove the shaft, this roll pin that retains the drive gear needs to be carefully driven out. We tapped ours back into place with a flat punch.  Our Summit Racing HEI advance...  Our Summit Racing HEI advance curve kit replaces the original mechanical advance. These weights extend outward in proportion to rpm, and production V-8 HEI units have a total centrifugal advance of 20 degrees (+/- 1 degree). Summit's kit is capable of 24 degrees. Take care reinstalling the e-clips that retain them; these things tend to fly, and trust us you'll never find 'em!  These springs completely control...  These springs completely control our ignition advance, since we have eliminated the vacuum and that directly affects how our engine will perform. We went with the heavier silver springs that most closely mimic the stockers for the planned performance range of our future engine buildup.  We've run across a few parts...  We've run across a few parts store caps that were a bit egg-shaped before; never use it if you end up with one yourself. You're risking arcing of the current as well as inviting moisture and corrosion under the cap. Our Pro Comp cap fit like a glove for a very budget-friendly price.  After attaching the pigtail...  After attaching the pigtail of wires to the 50,000V Pro Comp coil atop the ignition cap, our budget rebuild and upgrade was complete. The extra voltage will ensure we're good to run a plug gap of around .044 without losing spark intensity.  One of the most basic ignition...  One of the most basic ignition upgrades, and also one of the most immediately beneficial, is using a quality cap and rotor assembly with brass components like this kit from Pro Comp. Brass will last much longer under high-voltage use and better withstand corrosion.
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