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Early Bronco Clutch Assembly
Keep your manual transmission performing the way it should with Early Bronco clutch kits, flywheels, and clutch linkage for the 1966-77 Ford Bronco. We offer both basic and deluxe clutch kits to match your needs. Our basic kits include the core components commonly advertised elsewhere, while our deluxe 66-77 Ford Bronco clutch kits go a step further by including the related parts you typically replace during a clutch job — such as the throwout bearing, pilot bearing, and pressure plate bolts — helping you complete the job right the first time.
Early Bronco Clutch Buyer's Guide | 1966-77 Ford Bronco
Early Bronco Clutch Buyer's Guide | 1966-77 Ford Bronco
When servicing the clutch in your 1966-77 Ford Bronco, there are a few important things to know before ordering parts. Not all Early Broncos used the same clutch size, and diagnosing common issues like clutch chatter requires a little understanding of how these short wheelbase rigs behave.
What Size Clutch Does My Early Bronco Have?
We’ve identified three different clutch sizes used in the 66-77 Bronco:
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9" Diameter: This clutch is only found in Early Broncos with the factory Inline 6-cylinder engine.
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10" Diameter: This is an uncommon clutch kit that is found in some Early Bronco V8's. We believe Ford used these clutches primarily as a way of unloading old inventory.
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11" Diameter: This is the most common clutch found in Early Broncos with the Small Block Ford V8 motor.
The 11" clutch is by far the most commonly found setup in Early Broncos. However, the only way to be certain is to verify what’s currently installed or confirm your flywheel size.
Before ordering a clutch kit, make sure you know your flywheel diameter and clutch size to avoid mismatched components.
Clutch Chatter in a Short Wheelbase Bronco
Clutch chatter — or what feels like clutch chatter — is a very common complaint in the Early Bronco. Because of the short wheelbase and stiff drivetrain angles, normal drivetrain vibration can sometimes be mistaken for clutch problems.
Here’s a simple way to determine if you’re dealing with true clutch chatter:
Remove the rear driveshaft and test drive the Bronco in front-wheel drive only.
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If the chatter is still present, it’s genuine clutch chatter.
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If the chatter disappears, the issue is likely drivetrain-related rather than clutch-related.
This quick test helps separate clutch issues from driveline vibration.
If true clutch chatter is confirmed, the fix is usually straightforward:
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Replace or resurface the flywheel
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Install a new diaphragm-style clutch kit
A properly surfaced flywheel combined with a quality diaphragm clutch will typically eliminate chatter issues.
Pilot Bushing or Pilot Bearing?
Now we’re stepping into debated territory.
Both pilot bushings and pilot bearings have been used in Early Broncos, and opinions vary. Based on our experience, we’ve found that pilot bearings tend to run smoother and hold up better over time.
We’ve run both styles and have seen more consistent longevity from bearings. That said, if you prefer a pilot bushing, we’re happy to supply one.
The key is proper installation and ensuring the crankshaft bore and input shaft are in good condition before installation.
When servicing your Early Bronco clutch, confirm your clutch size, inspect the flywheel carefully, and properly diagnose chatter before replacing parts. A resurfaced flywheel and a quality diaphragm clutch kit solve most issues when installed correctly.
If you’re unsure which clutch components are right for your 66-77 Ford Bronco, the Wild Horses team can help you identify the correct setup for your drivetrain.
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