Double Your Displacement: The Great 455 Swap
Our clutch linkage was worn and sloppy from years of grocery-getting, so Year One suggested replacing the wearables with their accurate repro linkage rods, Z-bar components, and rubber boots for the clutch fork and clutch pedal rod. There’s a dramatic difference between old and new, and the six-cylinder Z-bar (left) and the V-8-style Z-bar (right) also have noteworthy differences. Doug Thorley told us only Z-bar PN 9776376 will work with header installs on ’64-’65 LeMans/GTO models. We bought a good used Z-bar thought to be correct for a ’65 GTO, but it flat out wouldn’t work. We couldn’t verify a part number, so it’s assumed we had the wrong one. Meanwhile, we made the stock six-cylinder Z-bar work after bending the lower lever arm 30-degrees outward (away from the engine) to clear the starter. It’s not pretty, but it’s functional, and that makes it a good temporary solution. View Related Article
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