REDLINE CAMS – 252/260 STREET TORQUE H.F.T.
Hydraulic Flat Tappet Camshaft | Dodge/Chrysler Big Block 350–440B (1958–1980)
Bring your classic Mopar Big Block to life with the REDLINE CAMS 252/260 Street Torque H.F.T. Designed for 350–440B Dodge/Chrysler engines (1958–1980), this camshaft focuses on street-friendly torque, crisp throttle response, and smooth drivability. Perfect for daily-driven muscle, vintage cruisers, and street rods, it offers a noticeable performance bump without sacrificing reliability or vacuum for power brakes.
Operating in the 1,500–4,250 RPM range, this cam is ideal for drivers who want strong low-end torque and midrange punch — the sweet spot for heavy Mopars and highway-ready performance builds.
🔧 Camshaft Specifications
Advertised Duration: 252° / 260°
Duration @ .050": 206° / 212°
Valve Lift (with 1.5 rocker arms): .420" / .440"
Lobe Separation Angle (LSA): 106° standard
Options: 108°, 110°, 112°, 114°
RPM Range: 1,500 – 4,250 RPM
Valve Lash: .000" intake / .000" exhaust (hydraulic design – zero lash)
📊 LSA Options – How They Affect Performance
| LSA | Powerband Behavior | Idle Quality | Vacuum / Accessories | Best For |
|---|---|---|---|---|
| 106° (Standard) | Hard-hitting low-end, max torque response | Rough lope | Lower vacuum | Muscle cars, street rods wanting sound & punch |
| 108° | Strong torque, slightly smoother idle | Noticeable lope | Moderate vacuum | Street/strip use |
| 110° | Balanced torque & midrange power | Mild lope | Good vacuum | Street performance builds |
| 112° | Broader RPM range, better top-end | Smooth idle | Strong vacuum | Daily-driven Mopars, power brakes |
| 114° | Softest low-end, smoothest power delivery |
✅ Recommended Upgrades
For best performance and reliability, pair with:
Performance valve springs (rated for lift)
New lifters (mandatory with flat tappet cams)
High-zinc (ZDDP) break-in oil & moly cam lube
Dual exhaust or headers for improved flow
3.23–3.55 rear gears (for responsive street performance)
Upgraded timing set & hardened pushrods
🚦 Best Used For
Daily-driven classic Mopars
Street cruisers needing torque & drivability
Muscle cars with power brakes
Heavy B-body / C-body Mopars where low-end torque matters most
⚡ Why Choose REDLINE CAMS?
✔ Designed specifically for vintage Mopar Big Blocks
✔ Wide LSA options to tailor sound and behavior
✔ Dyno-tested for real-world street torque
✔ Proven reliability with over 30 years of camshaft expertise