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1969 Shelby 428 CobraJet Ported vs Manifold Vacuum & Vacuum Advance Diaphragm Impact & Testing Ported Vacuum Vs Manifold Vacuum

Last updated: Monday, December 29, 2025

1969 Shelby 428 CobraJet Ported vs Manifold Vacuum & Vacuum Advance Diaphragm Impact & Testing Ported Vacuum Vs Manifold Vacuum
1969 Shelby 428 CobraJet Ported vs Manifold Vacuum & Vacuum Advance Diaphragm Impact & Testing Ported Vacuum Vs Manifold Vacuum

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