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![PRE-ORDER] HEI Timing Advance Lock Out Kit for 602 Crate](https://d2j6dbq0eux0bg.cloudfront.net/images/15780188/1070659683.jpg "PRE-ORDER] HEI Timing Advance Lock Out Kit for 602 Crate")
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Bolt-Ons for a Small Block Chevy: Ignition Basics – RacingJunk News
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Quick Tech: Why You Still Need Vacuum Advance
