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COMP Cams K11-601-4 Thumpr 235/249 Hydraulic Flat Cam K-Kit for Chevrolet Big Block 396-454
✅ In stock
📉 Price recently dropped
F
Grade
Analysis Confidence
100%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Sep 17, 2026 3:12 AM · Prices & availability subject to change
Is This a Good Price on Amazon?
💤 Not a Deal- 💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
- 💰The current price is slightly above the going rate for this product — worth watching for a drop.
- 📉It has been quite a while since a more competitive price was available, lending today's offer solid comparative value.
- 📈The direction is downward at the moment; if that holds, an even better price may surface — though timing the market is never certain.
How We Scored This Deal
Price Competitiveness
0/28
Recent Value
4.29/22
Market Standing
3.24/20
Deal Strength
0/20
Momentum
10/10
📝 Product Overview
🏪 Sold by
Fast Track Auto
🚚 Shipping
Free Shipping
Product Details
✓High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle.
✓2,000-5,900 RPM Operating Range
✓235/249 Duration at .050". 107 Degree Lobe Separation Angle. 0.51"/0.495" Valve Lift
✓K Kits vary in their contents, but generally contain a camshaft, a set of lifters, valve springs, retainers, locks, valve seals, timing set, assembly lubricant, decals and instructions. Check description for more accurate listing of kit contents.
✓Early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note. Best with aftermarket converters and more rear gear.
✓Perfect choice for muscle cars and street rods - Three unique cam designs: Thumpr, Mutha' Thumpr and Big Mutha' Thumpr deliver excellent horsepower gains and broad torque curve.
✓Fits Chevrolet 396-454 Mark IV Big Block
✓Made in USA
⚙️ Specifications
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$291.95
$291.95
High performance street/strip, needs 9:1 compression, 2,500+ stall, intake, gears and headers, rough idle.
Street/strip, needs 9.5:1 compression, 2,800+ stall, intake, gears and headers, very rough idle.
1,800 to 5,600
2,000 to 5,900
2,300 to 6,200
279/296
287/304
294/312
227/241
235/249
243/257
.498"/.483"
.510"/.495"
.522"/.507"
CL11-601-4
CL11-602-4
GK11-600-4
GK11-601-4
