Getting to the Tip of TPI
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A large HEI distributor (left) with a self-contained coil in the top of the cap was used in the '85-86 F-bodies and '85-91 Corvettes. The '85-86 units were non-roller cam distributors. If an early-type distributor is used on a roller cam engine, you will need the GM 104560413 distributor gear. Early distributors have a twist-lock cap while the '85-up TPI HEI distributors had the screw-down-type cap. The small electronic distributor (right) was used on '87-95 small- and big-block injected engines. NOTE: truck distributors have a built-in rev limiter that can be change by using a Camaro module. View Related Article
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