Ford 351C / 351M / 400M 270/276 High Output Hydraulic Flat Tappet Camshaft
.530" Lift Performance Cam — Multiple LSA Options
 
💥 Overview
The Redline Cams 270/276 High Output camshaft is designed to unleash the true potential of Ford’s Cleveland and Modified engines — the 351C, 351M, and 400M.
 
These engines are known for their excellent cylinder head airflow, and this camshaft is engineered to take full advantage of that capability. With 270°/276° advertised duration and .530" valve lift using 1.73 rocker arms, this grind delivers strong mid-range torque, aggressive throttle response, and powerful upper RPM pull.
The cam produces a deep, lopey muscle-car idle while maintaining excellent street drivability when paired with the proper converter and gearing.
Multiple lobe separation angle options allow builders to tailor idle quality, torque curve, and vacuum characteristics depending on the build.
 
⚙️ Camshaft Specifications
Advertised Duration (@ .006")
270° Intake / 276° Exhaust
 
Duration @ .050"
224° Intake / 230° Exhaust
 
Lobe Lift
.306" Intake / .306" Exhaust
 
Valve Lift (1.73 Rockers)
.530" Intake / .530" Exhaust
Camshaft Type
Hydraulic Flat Tappet
 
Available Lobe Separation Angles
108° • 110° • 112° • 114°
 
Installation
Installed 4° Advanced
 
⏱ Valve Timing Events (.050")
(Installed 4° advanced)
108° LSA
Intake Centerline: 104°
Intake Opens: 8° BTDC
Intake Closes: 36° ABDC
Exhaust Opens: 51° BBDC
Exhaust Closes: 39° ATDC
Overlap: 47°
Idle Character: Very aggressive lope
 
110° LSA
Intake Centerline: 106°
Intake Opens: 6° BTDC
Intake Closes: 38° ABDC
Exhaust Opens: 49° BBDC
Exhaust Closes: 41° ATDC
Overlap: 47°
Idle Character: Aggressive street lope
 
112° LSA
Intake Centerline: 108°
Intake Opens: 4° BTDC
Intake Closes: 40° ABDC
Exhaust Opens: 47° BBDC
Exhaust Closes: 43° ATDC
Overlap: 47°
Idle Character: Moderate lope with smoother vacuum
 
114° LSA
Intake Centerline: 110°
Intake Opens: 2° BTDC
Intake Closes: 42° ABDC
Exhaust Opens: 45° BBDC
Exhaust Closes: 45° ATDC
Overlap: 47°
Idle Character: Smoothest idle and broad torque curve
 
🔧 Recommended Valvetrain
• Performance valve springs (120–140 lbs seat pressure)
• Hardened pushrods
• New hydraulic lifters
• Hardened retainers and locks
• Adjustable rocker arms recommended
• Performance timing set
 
⚙️ Recommended Converter & Gearing
Manual Transmission
Excellent street performance
 
Automatic Transmission
2200–2600 stall converter recommended
Rear Gear Ratio
3.50 – 4.10 gears ideal
 
🚗 Applications
Compatible with:
• Ford 351 Cleveland (351C)
• Ford 351 Modified (351M)
• Ford 400M
 
Perfect for:
• Classic muscle cars
• Street performance builds
• Performance trucks
• High compression street engines
 
🔥 Why Choose Redline Cams
At Redline Cams, we design camshafts for builders who demand real performance. Every camshaft is precision ground on high-quality cam cores and engineered to deliver aggressive power curves, reliable durability, and the unmistakable sound of a true performance engine.
Whether you're building a Cleveland-powered muscle car or a torque-heavy 400M truck, the 270/276 High Output camshaft delivers the sound, torque, and horsepower these engines were meant to produce.