Application: Dodge/Chrysler Big Block V8 – 350, 361, 383, 400, 413, 426W, 440 (1958–1980)
Unlock the true muscle of your Mopar Big Block with the REDLINE CAMS Street Brawler 268/270 Hydraulic Flat Tappet Camshaft. Designed for enthusiasts who want stronger midrange power without losing street manners, this camshaft delivers a noticeable idle, crisp throttle response, and torque where it counts—perfect for both cruising and spirited weekend driving.
📊 Camshaft Specifications
Advertised Duration: 268° / 270°
Duration @ .050": 218° / 224°
Valve Lift (with 1.5 rockers): .450" / .460"
Lobe Separation Angle (LSA): 108° (standard)
Optional LSAs: 110°, 112°, 114°
RPM Range: 1,750 – 4,500
Redline: ~5,000 RPM
Valve Lash: .000" intake / .000" exhaust (hydraulic zero lash)
⚙️ LSA Options & Powerband Differences
108° (Standard): Balanced torque and horsepower; excellent for street/strip builds.
110°: Broader power curve, smoother idle, better vacuum for accessories.
112°: Street-friendly drivability, increased idle stability, EFI-compatible.
114°: Softest idle, strongest vacuum signal, best for heavy cars and highway use.
🔧 Recommended Upgrades
High-quality performance valve springs matched to lift & RPM range
Double roller timing chain kit
Headers and free-flowing dual exhaust for maximum torque
Carburetor re-jetting and ignition tuning to match the cam profile
High-zinc break-in oil for flat tappet camshaft longevity
✅ Best Suited For
Dodge/Chrysler Big Block-powered muscle cars, trucks, and cruisers
Street builds needing a healthy lope with drivability
Drivers who want reliable midrange torque with a performance edge
Builds aiming for strong street acceleration without excessive RPM demand
⚡ The REDLINE CAMS Street Brawler 268/270 is your step up from stock—delivering the perfect balance of sound, torque, and street performance for your Mopar Big Block.
Street Brawler 268/270 H.F.T. Dodge/Chrysler Big Block 350–440B (1958–1980)
🔧 Installation Instructions – REDLINE CAMS Street Brawler 268/270 Hydraulic Flat Tappet Camshaft
(Dodge/Chrysler Big Block 350–440B, 1958–1980)
⚠️ Important Notes Before You Begin:
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Use break-in oil with high zinc/phosphorus (ZDDP) for all flat tappet cams and for the life of your engine.
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Always replace lifters when installing a new camshaft.
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Verify spring pressures, coil bind clearance, and retainer to seal clearance.
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Camshaft break-in is critical — follow the included procedure to prevent premature wear.
1. Preparation
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Disconnect the battery.
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Drain coolant and remove radiator for clearance.
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Remove distributor, carburetor, intake manifold, valve covers, rocker arms, pushrods, lifters, and timing cover.
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Remove old camshaft carefully to avoid damaging cam bearings.
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Clean gasket surfaces thoroughly.
2. Camshaft Installation
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Apply assembly lube generously to all cam lobes, journals, and lifter faces.
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Carefully slide the new camshaft into the block to avoid nicking cam bearings.
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Install new camshaft timing gear and align timing marks (dot-to-dot).
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Install a new double roller timing set (recommended).
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Verify camshaft endplay with a thrust plate or button (if required).
3. Lifter & Valvetrain Setup
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Soak new hydraulic lifters in clean engine oil before installation.
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Install lifters in their bores, coated with assembly lube on the bottoms.
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Reinstall pushrods and rocker arms.
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Hydraulic Zero Lash Setting:
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Rotate engine until lifter is on the base circle of cam.
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Tighten rocker until pushrod just loses free spin.
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Add ½ turn preload for hydraulic lifters.
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4. Reassembly
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Reinstall timing cover with new gasket and front seal.
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Reinstall harmonic balancer, intake manifold, carburetor, valve covers, and accessories.
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Refill coolant and reconnect all hoses and wiring.
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Reinstall distributor and set base timing at manufacturer specs (usually 10–14° BTDC initial for performance cams).
5. Break-In Procedure (Flat Tappet Critical Step)
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Use high-zinc break-in oil (10W-30 or 15W-40).
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Prime oiling system with a drill-driven oil pump primer before startup.
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On initial startup, immediately bring engine speed to 2,000–2,500 RPM and hold for 20–30 minutes.
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Vary RPM slightly (do not idle).
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Monitor oil pressure and coolant temperature.
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Shut down, allow to cool, and change oil & filter after break-in.
6. Post-Install Checklist
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Verify ignition timing and carburetor adjustments.
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Check valve cover clearance, pushrod geometry, and rocker arm sweep.
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Inspect for leaks and re-torque intake/exhaust bolts after heat cycles.
🔧 Recommended Supporting Parts
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Performance valve springs matched to cam specs (.450"/.460" lift, 5,000 RPM limit)
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New timing chain & gears (double roller recommended)
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Headers & free-flowing exhaust for best performance
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Performance ignition system (capable of handling increased cylinder pressure)
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High-zinc break-in oil for camshaft protection
⚡ Following these steps ensures the REDLINE CAMS Street Brawler 268/270 H.F.T. delivers reliable midrange torque, street-friendly performance, and long service life in your Mopar Big Block.
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