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COMP Cams K11-602-4 Thumpr 243/257 Hydraulic Flat Cam K-Kit for Chevrolet Big Block 396-454
✅ In stock
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.
- 💰At 34% above its usual rate, this is currently priced higher than what most shoppers have paid.
- 📉It has been quite a while since a more competitive price was available, lending today's offer solid comparative value.
- ➡️Pricing has held fairly steady, with no strong push in either direction.
How We Scored This Deal
Price Competitiveness
0/28
Recent Value
0/22
Market Standing
0.1/20
Deal Strength
0/20
Momentum
4/10
📝 Product Overview
🏪 Sold by
Fast Track Auto
🚚 Shipping
Free Shipping
Product Details
✓Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle.
✓2,300-6,200 RPM Operating Range
✓243/257 Duration at .050". 107 Degree Lobe Separation Angle. 0.522"/0.507" 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
Material
Cast Iron
Brand
Comp Cams
Item dimensions L x W x H
25.2 x 10.2 x 5.1 inches
Included Components
Per Item Description
Number of Pieces
1
Manufacturer
COMP Cams
UPC
036584182269
Global Trade Identification Number
00036584182269
Model
COMP Cams
Item Weight
26.2 pounds
Product Dimensions
25.2 x 10.2 x 5.1 inches
