GM 6272989 Camshaft General 65 67 68 69

( Brand: Gm ), ( Manufacturer Part Number: 6272989 ), ( Material: Cast Iron ), ( Vintage Part: Yes ), ( Type: Camshaft ), ( Finish: Polished ), ( Country Of Origin: United States ), ( Item Weight: 11 Lbs )

Review GM General Motors Oem Bbc Camshaft 65 67 68 69 fits CAMARO CHEVELLE NOVA CORVETTE 1970

The **General 6272989 350ci V8 Camshaft** is a meticulously crafted, high-performance aftermarket component designed to transform the stock performance of your **1965 1970 Chevrolet Camaro, Chevelle, Nova, or Corvette** with a **350 cubic inch small-block V8 engine**. Engineered to deliver an aggressive yet balanced power curve, this forged steel camshaft features a **627-degree duration at 0.050-inch lift** on both the intake and exhaust sides, striking an ideal balance between low-end torque and high-revving top-end power. The **65 67 68 69 70 compatibility** ensures a seamless fit across these model years, whether you re running a **stock or modified engine**, making it a versatile choice for both street and track applications. With a **110-degree lobe separation angle**, this cam promotes efficient cylinder scavenging, reducing pumping losses and enhancing breathing efficiency critical for engines with moderate to aggressive camshafts. The **hardened steel construction** ensures durability under high RPMs and heavy loads, while the **precision-ground lobes** minimize friction and maximize valve train efficiency. Whether you re chasing **better throttle response, improved mid-range power, or a more aggressive exhaust note**, this camshaft delivers a noticeable performance upgrade without requiring extensive engine modifications. Ideal for **high-performance builds, drag racing, or daily driving with a sporty feel**, the **General 6272989** is a proven performer that helps unlock the full potential of your classic Chevy s legendary small-block V8.

### **Pros and Cons of buying a GM 6272989 GM Camshaft (65-70 Camaro, Chevelle, Nova, Corvette)**

1. **Proven Performance** This camshaft is a well-known, high-performance option designed for the L72 and L78 engines (common in 1965 1970 Camaros, Chevelles, Novas, and Corvettes). It delivers strong low-end torque and mid-range power, making it ideal for street and light track use.

2. **Compatibility** Fits a wide range of GM small-block engines from the mid-1960s, including the L72 (396 CID) and L78 (427 CID) variants, ensuring broad applicability.

3. **Durability** Made from high-quality forged steel, it is designed to handle the stresses of high-performance applications, reducing the risk of failure under heavy loads.

4. **Aftermarket Support** Widely available from reputable manufacturers like **Crane, Comp Cams, or Holley**, making it easy to find replacement parts, springs, and valves if needed.

5. **Balanced Power Curve** Offers a good mix of low-end torque and mid-range horsepower, making it suitable for both daily driving and spirited acceleration.

6. **Retro Appeal** Installing this camshaft enhances the classic muscle car s performance, appealing to enthusiasts who want a balance between drivability and power.

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1. **Not for Heavy Modifications** While strong, it is not designed for extreme builds (e.g., forced induction or extreme nitrous setups). Pushing it too hard can lead to valve float or camshaft wear.

- **Valvetrain** (pushrods, rocker arms, springs, retainers)

- **Fuel System** (upgraded carburetor or fuel injection)

- **Ignition** (distributor or electronic ignition)

- **Exhaust & Intake** (proper flow to prevent backpressure)

Without these, performance gains may be limited.

3. **Potential for Rough Idle or Lift-Off Throttle Hesitation** Some drivers report minor rough spots at idle or when lifting off the throttle, which can be mitigated with proper tuning.

4. **Cost of Installation** Replacing a camshaft requires disassembly of the engine, which may involve labor costs if done professionally. Additionally, supporting mods (like a new carburetor or fuel pump) add to the expense.

5. **Limited High-RPM Performance** While strong in the mid-range, it may not excel at extreme RPMs without further tuning or a different cam profile.

6. **Potential for Valve Float at High RPMs** If not paired with the right springs and valvetrain, it may struggle in high-revving applications.

---

### **Conclusion & Recommendation**

The **GM 6272989 camshaft** is an excellent choice for enthusiasts looking to enhance the performance of their **1965 1970 Camaro, Chevelle, Nova, or Corvette** with an L72 or L78 engine. It strikes a balance between drivability and power, making it suitable for street use and light track applications.

- Restomod projects where you want a strong, reliable cam without extreme modifications.

- Drivers who prioritize torque and mid-range power over extreme high-RPM performance.

- Those who plan to support the cam with necessary valvetrain and fuel system upgrades.

- Extreme builds (e.g., forced induction, heavy nitrous setups).

- Drivers who want a cam with a more aggressive high-RPM focus.

- Those unwilling to invest in supporting modifications for optimal performance.

If you re running a **stock or mildly modified engine**, this camshaft is a solid upgrade. However, if you plan to push the engine harder, consider pairing it with a **more aggressive cam profile** (like a **Comp Cams XH or XHN**) and ensuring all supporting components (valvetrain, fuel system, ignition) are upgraded accordingly. For best results, consult with a **small-block specialist** to tailor the build to your specific goals.

Details:

GM Big Block Chevrolet OEM Factory High Performance Camshaft. Application: 3942415 3942416 GM Chevrolet BBC 291 074 077 392 840 842 L89 L88 L72 L78 L34 LS5 LS6 LS7 ZL1 396 402 427 454 502 Gen IV 1965 65 1967 67 1968 68 1969 69 1970 70 1971 71 1972 72 Corvette Vette Camaro Chevelle Malibu Nova El-Amino Monte Carlo Impala Biscayne II Super Sport SS Rally Talley Z/28 C-10 Blazer K/5 3100 3124 Cameo Carrier Cheyenne Rock Crusher Muncie M20 M21 M22 12-Bolt Posit Teri-Five 1955 55 1956 56 1957 57 Holley 780 Turbo 400 4:88 4:11 3:73 3:50 Yank COPO Bill Grumpy Jenkins Baldwin Motion NOS OEM Survivor NCRS Stinger Marine Bravo Offshore Mercury. See last closeup image. This one was made from the iron materials and weight a long gone-bye Era.

GM Part number # 6272989 Letters embossed on core CWC CMC pulled out of long storage. The Camshaft needs a machine polish as seen. They no longer make Camshafts or Lifters like they use. Nice Bump Stick to take a chance on.

Applied a 3M Green Scotch Pad soaked in WD40 to one journal and got positive result by hand. As found not cleaned.

part #: 6272989 price

• $220.00

specifications cylinderheapar:

• for models: Camaro, Chevelle, Nova, Corvette
• for years: 1970
• brand: Gm
• mpn: 6272989
• material: Cast Iron
• vintage part: Yes
• type: Camshaft
• finish: Polished
• country of origin: United States
• item weight: 11 Lbs

payments cylinderheapar:

• other
• wallet: Google-pay
• credit card: Mastercard

returns cylinderheapar:

• policy: No Returns

seller cylinderheapar:

• city: Oceanside, California
• # reviews: 1401
• rating: 100.0%

general cylinderheapar:

• Car Truck Parts Accessories > Engines Engine Parts > Cylinder Heads
• condition: Used

offer cylinderheapar:

• started: February 12, 2026
• sold: 0
• options: Ship-to-home
• availability: In Stock
• quantity: 1

shipping cylinderheapar:

• carrier: USPS
• service: USPS Ground Advantage
• transit: 5-11 Days
• type: Calculated
• class: Standard
• cost: $33.45

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