Application: Dodge/Chrysler Small Block V8 – 273, 318, 340, 360 (1964–1991)
Wake up your Mopar Small Block with the REDLINE CAMS Street Avenger 268/270 Hydraulic Flat Tappet Camshaft—a street/strip grind designed for crisp throttle response, strong midrange power, and that unmistakable muscle car lope at idle. Ideal for enthusiasts looking to step up from stock, this cam delivers more torque and horsepower while keeping everyday drivability intact.
📊 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 Effects
108° (Standard): Balanced street/strip performance with broad torque curve.
110° (Street/Performance): Wider powerband, smoother idle, better vacuum for brakes.
112° (Street Friendly): Stable idle, improved fuel efficiency, EFI-compatible.
114° (Cruiser/Highway): Soft idle, maximum vacuum, great for heavy cars & long trips.
🔧 Recommended Upgrades
Performance valve springs matched to lift & RPM range
Double roller timing chain set
Headers + dual exhaust for maximum torque
Proper carburetor jetting & ignition tuning
High-zinc break-in oil for camshaft protection
✅ Best Suited For
Dodge/Chrysler Small Block muscle cars, trucks, and cruisers
Builders wanting a healthy lope at idle with street manners
Weekend cruisers that double as occasional strip cars
Enthusiasts who want midrange torque & throttle response for real-world driving
⚡ The REDLINE CAMS Street Avenger 268/270 is the Street Performer for your Mopar Small Block—bringing classic lope, midrange punch, and reliable street performance to your 273, 318, 340, or 360 build.
Street Avenger 268/270 H.F.T. Dodge Small Block 273–360 (1964–1991)
🛠 Installation Instructions – REDLINE CAMS Hydraulic Flat Tappet Camshaft
Application: Dodge/Chrysler Small Block V8 (273, 318, 340, 360 – 1964–1991)
⚠️ Important Notes Before You Begin
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Always use new lifters with a new flat tappet camshaft.
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Use high-zinc break-in oil (ZDDP) and moly assembly lube.
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Verify valve spring pressures are compatible with cam specs.
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Always check retainer-to-seal clearance, pushrod length, and piston-to-valve clearance.
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Recommended valve lash: .000” intake / .000” exhaust (hydraulic zero lash).
🔧 Step-by-Step Installation
1. Preparation
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Disconnect battery and drain coolant.
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Remove radiator, fan, belts, valve covers, intake manifold, timing cover, and timing set.
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Remove distributor and mark rotor position for correct re-installation.
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Remove old camshaft and lifters. Inspect cam bearings and journals for wear.
2. Camshaft Installation
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Apply assembly lube generously to cam lobes and journals.
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Carefully slide new camshaft into block, avoiding nicks or scratches.
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Install new camshaft thrust plate (if applicable) and torque to spec.
3. Timing Set & Degreeing
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Install new double-roller timing chain set.
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Align timing marks:
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Dot-to-Dot method (crank dot at 12 o’clock, cam dot at 6 o’clock).
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Torque cam gear bolts to spec with thread locker.
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If possible, degree the camshaft to verify proper installation.
4. Lifters & Pushrods
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Coat new hydraulic lifters with assembly lube.
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Install lifters into their bores.
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Insert pushrods and rocker arms.
5. Valve Lash / Preload
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Rotate engine to TDC firing position for #1 cylinder.
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Adjust hydraulic lifters to zero lash (tighten rocker nut until pushrod just stops spinning freely).
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Add 1/4–1/2 turn preload to each rocker.
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Repeat for all cylinders following the firing order (1-8-4-3-6-5-7-2).
6. Reassembly
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Reinstall timing cover, intake manifold, valve covers, water pump, belts, radiator, and accessories.
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Reinstall distributor, setting timing near initial spec (10–12° BTDC is a good starting point).
7. Camshaft Break-In Procedure (Critical!)
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Fill engine with high-zinc break-in oil.
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Prime oiling system before startup.
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Start engine and immediately hold at 2,000–2,500 RPM for 20–30 minutes.
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Vary RPM slightly during break-in; do not let the engine idle.
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Monitor oil pressure, coolant temp, and check for leaks.
8. Post Break-In
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Change oil and filter after 30 minutes.
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Refill with high-zinc oil for the first 500 miles.
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Recheck ignition timing and adjust as needed.
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Verify idle vacuum and make carburetor/EFI adjustments.
✅ Recommended Supporting Upgrades
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Performance valve springs matched to cam lift/duration
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High-flow timing set
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Hardened pushrods & steel retainers
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Headers & free-flowing exhaust
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Performance ignition timing (initial ~12–16° BTDC, total ~34°)
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