454 STAGE 2 RV HP CAMSHAFT KIT W/ PERFORMANCE LIFTERS & DOUBLE ROLLER TIMING | LIFT: .527/.553 | .050″ DURATION: 224/232 | FITS: CHEVY BBC BIG BLOCK 454 427 402 396

Description

Wake up your Big Block Chevy with the Enginetech ES1139R Stage 2 Camshaft, a serious performance upgrade designed for the 454 owner who wants more than just a stock replacement. While many “RV cams” are mild, this Stage 2 grind brings heavy-hitting specs to the table with a massive lift profile of .527” intake and .553” exhaust. This is the ultimate choice for 396, 427, and 454 Mark IV engines that need to pull hard in the mid-range and sound mean doing it. Whether you are building a high-performance tow rig, a street-strip truck, or a muscle car cruiser, this cam delivers the airflow you need to make big power.

The magic of this camshaft is in the lift geometry. By opening the valves significantly further than stock (Intake: .527 / Exhaust: .553), the ES1139R allows for massive cylinder filling and exhaust scavenging. This translates to a substantial increase in torque and horsepower, particularly from the low-mid range up through the top end. Because of the aggressive lift, this cam transforms the personality of the engine, giving you a noticeable, throaty idle that lets everyone know this isn’t a factory smog motor. It’s designed to maximize the potential of your cylinder heads, making it perfect for engines with upgraded intake manifolds and headers.

How does it feel on the street? It pulls like a freight train. This isn’t a lazy stock cam; when you step on the throttle, the response is immediate and muscular. It is classified as a “Stage 2 RV” cam because it retains the low-end torque required for moving heavy vehicles, but carries that power much further up the RPM band than a standard Stage 1 cam. If you are towing a heavy toy hauler or just want your Silverado or Chevelle to pin you to the seat, this is the profile you want.

Why buy the Enginetech ES1139R? You get professional racing-style geometry at a fraction of the price of big-name boutique brands. Enginetech manufactures these shafts to exacting tolerances to ensure durability under the stress of high-lift operation. Please note: With a lift of over .500″, we highly recommend verifying your valve spring capabilities to ensure they can handle the extra travel. If you are ready to stop playing around with mild cams and want real “seat-of-the-pants” performance, this is the camshaft for your build.

Manufacturer: ENGINETECH
Model: STAGE-2 HP CAMSHAFT & TIMING KIT
Included components: 1-CAMSHAFT 16-LIFTERS 1-TIMING KIT
Warranty: LIFETIME – IF INSTALLED BY A CERTIFIED MACHINIST