Coyote Engine Camshaft Degreeing Guide

What Does it Mean to Degree a Camshaft?

Degreeing a camshaft ensures that it is installed in the optimal position relative to the crankshaft, as specified by the camshaft manufacturer. This process is critical for maximizing engine performance and reliability. When degreeing a camshaft, you verify that the timing events such as intake valve opening and exhaust valve closing occur at the correct points in the engine cycle.

Tools You’ll Need

• Dial Indicator: Measures precise valve lift position.
• Degree Wheel: Attaches to the crankshaft to measure timing events.
• Piston Stop: Ensures accurate determination of Top Dead Center (TDC).
• Socket Set: For crankshaft and cam gear adjustments.

Steps to Degree a Camshaft on a Coyote Engine

1. Set Up the Engine: Ensure the engine is at TDC for cylinder #1. Attach the degree wheel to the crankshaft and secure it firmly.
2. Find True TDC: Use a piston stop to locate the exact Top Dead Center. Rotate the engine in both directions, marking the degree readings, and calculate the midpoint to find true TDC.
3. Install the Dial Indicator: Position the dial indicator on the intake or exhaust valve to measure valve lift. Secure the indicator and verify it reads accurately.
4. Check Valve Timing: Rotate the crankshaft and use the dial indicator to measure the valve lift. To find the cam's centerline, measure the degree readings at 0.050" before and 0.050" after the valve reaches max lift. Add these two values together and divide by 2 to calculate the centerline measurement. Record the results for both the intake and exhaust cams.
5. Adjust the Camshaft Timing: If the timing events don’t match the specifications on the cam card, adjust the camshaft gears or sprockets to align them properly. To advance or retard the cams:
   • Intake Cam: Rotate clockwise to advance timing, or counterclockwise to retard timing.
   • Exhaust Cam: Rotate counterclockwise to advance timing, or clockwise to retard timing.
6. Recheck Your Work: After adjustments, repeat the process to verify that the timing events align perfectly with the cam card specifications.

Why Degreeing Your Camshaft Matters

Degreeing ensures that your Coyote engine operates as intended, with peak performance and reliability. Properly degreeing your camshaft is particularly critical for turbocharged applications as it directly impacts turbo spool, boost control, and overall engine performance:

• Intake Cam (Advance): Opening the intake valve earlier allows more air to enter the cylinder sooner, enhancing low-end torque and reducing turbo lag. This can improve spool time for quicker boost response.
• Intake Cam (Retard): Delaying the intake valve opening shifts the powerband to higher RPMs, allowing the turbo to build more consistent boost at higher engine speeds.
• Exhaust Cam (Advance): Advancing the exhaust cam opens the exhaust valve earlier, improving scavenging and allowing the turbo to maintain boost pressure efficiently at higher RPMs.
• Exhaust Cam (Retard): Delaying the exhaust valve opening can help retain exhaust energy, improving spool-up time and low-RPM boost generation, especially in small or mid-sized turbo setups.

Incorrect camshaft timing in turbo applications can result in poor spool, inconsistent boost levels, and reduced engine efficiency. Whether you’re tuning for drag racing, track days, or street performance, precise cam timing is essential for achieving the best results for your turbocharged Coyote engine.

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