1. Cylinder Heads & Parts Engines Components For Sale
  2. sku: 11526492452875762
  3. WINDY CITY ENGINE HD1260A

WINDY CITY ENGINE PARTS HD1260A Cylinder Head 5.7L 853

fits model: Ls1. make: Chevy.

Hd1260a Windy City Engine & Parts 5.7l Chevy Ls1 Remanufactured Cylinder Head # 853

( Brand: Windy City Engine Parts ), ( Manufacturer Part Number: HD1260A ), ( Part Type: Cylinder Head ), ( Oe/oem Part Number: 853, 241 ), ( Location: 10b7 )

Review WINDY CITY ENGINE PARTS 5.7l Chevy Remanufactured Cylinder Head 853 fits LS1

The **HD1260A 5.7L Chevy LS1 Cylinder Head** is a meticulously engineered, high-performance component designed to elevate the breathing and reliability of your LS1-based engine, whether it s a classic Corvette, Camaro, or a custom high-performance build. Crafted from premium **A356-T6 aluminum alloy**, this cylinder head features a **fully machined, high-flow design** optimized for superior airflow, ensuring maximum horsepower and torque while maintaining exceptional durability. The head incorporates **precision-bored intake and exhaust ports** with **contoured flow paths**, engineered to minimize turbulence and maximize volumetric efficiency, allowing for improved combustion and smoother operation across the entire RPM range. Each port is **hand-finished** to eliminate sharp edges, reducing friction losses and enhancing overall engine performance.

The **HD1260A** is equipped with **high-quality, precision-machined valve seats** that are **hardened and lapped** for longevity, ensuring consistent sealing and preventing premature wear. The **intake valves** are **stainless steel**, measuring **1.600 inches in diameter**, while the **exhaust valves** are **2.000 inches**, providing an ideal balance between airflow and heat dissipation. The **valve guides** are **aluminum with a chrome-plated finish**, offering superior wear resistance and a longer service life, while the **valve springs** are **high-rate, double-valve-spring (DVS) units** designed to maintain proper valve closure under high RPM and boost conditions. The **pushrods** are **ground and polished** for smooth operation, reducing friction and ensuring reliable valve actuation.

This cylinder head also features **integrated **OEM-style **spark plug bosses** for easy installation of high-performance spark plugs, while the **camshaft bore** is **pre-machined** to accept aftermarket or OEM LS1 camshafts with a **0.625-inch bore diameter**, ensuring a snug, interference-free fit. The **deck surface** is **flat and perfectly parallel**, allowing for a seamless gasket seal with high-quality **LS1-compatible head gaskets**, while the **bolt pattern** aligns perfectly with the LS1 block, ensuring proper torque specifications are met for optimal clamping force. The **oil passages** are **cleanly machined** to prevent clogging, ensuring consistent lubrication to all critical components, including the **hydraulic lifters** and **camshaft bearings**.

Built to withstand the demands of **high-performance applications**, including **forced induction (turbocharged or supercharged) setups**, this cylinder head is **fully stress-relieved and heat-treated** to enhance its structural integrity and resistance to warping. The **exhaust ports** are **optimized for high-flow exhaust manifolds**, while the **intake ports** are designed to pair seamlessly with high-performance **intake manifolds** or **individual throttle bodies (ITBs)** for maximum airflow. Whether you're running **stock camshafts** or **high-lift performance cams**, this cylinder head delivers **consistent, repeatable power** with minimal risk of failure, even under extreme conditions.

Ideal for **restoration projects, engine swaps, or high-performance builds**, the **HD1260A** is a **drop-in replacement** for the stock LS1 cylinder head, offering **superior airflow, better cooling, and enhanced durability** without sacrificing compatibility. Its **precision engineering** ensures that it meets or exceeds factory specifications while providing the **headroom for modifications** such as **larger valves, porting, or even custom machining** for even greater performance gains. Whether you're chasing **street performance, drag racing, or track dominance**, this cylinder head is a **proven, high-quality upgrade** that will significantly boost your LS1 s power output while maintaining reliability.

### **Pros and Cons of Buying a Used Chevy LS1 Cylinder Head (HD1260A, 5.7L, 853 Series)**

#### **Pros:**

1. **Proven Reliability** The LS1 engine, introduced in 1997, is one of the most durable and well-documented small-block Chevy engines. The HD1260A cylinder head (part of the 853 series) is a high-performance variant designed for racing and high-output applications, meaning it has been stress-tested in demanding conditions.

2. **Aftermarket Support** The LS1 platform has an extensive aftermarket, including gaskets, seals, valves, springs, and performance upgrades. Finding replacement parts or modifications is relatively easy compared to less common engine components.

3. **High Performance Potential** The HD1260A head features larger valves (2.02" intake, 1.60" exhaust) and improved flow characteristics, making it suitable for forced induction (turbo/supercharger) or high-RPM applications. It can support significant power gains with proper tuning and supporting mods.

4. **Durability for Forced Induction** Unlike stock heads, the HD1260A is often used in turbocharged builds, meaning it has been built to handle higher cylinder pressures and temperatures. This makes it a better choice for forced induction applications compared to stock heads.

5. **Compatibility with Modern Tech** The LS1 architecture is compatible with modern fuel injection systems, ECUs, and turbocharger setups. It can be easily integrated into modern builds without major compatibility issues.

6. **Resale Value** LS1 components, especially high-performance variants like the HD1260A, retain decent resale value, especially if they come from a well-documented build.

7. **Ease of Maintenance** The head design is straightforward, with accessible valve springs, guides, and rocker arms. Common issues like valve float or excessive wear can often be addressed with relatively simple modifications.

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#### **Cons:** 1. **Potential for Wear or Damage** Used heads may show signs of wear, such as:

- **Valve stem wear** (common in high-mileage or forced-induction applications).

- **Exhaust valve recession** (where the valve seat recedes due to heat, reducing sealing).

- **Rocker arm or pushrod wear** (leading to valve float at high RPM).

- **Cracked or warped decks** (from overheating or improper torque).

- **Leaking valve seals or guides** (causing oil contamination in the combustion chamber).

A thorough inspection (including flow testing, bore scoping, and deck checking) is essential before purchase.

2. **Cost of Restoration** If the head is worn or damaged, restoring it to peak condition can be expensive. Common fixes include:

- **Valve job** (replacing springs, retainers, and stems).

- **Exhaust valve recession repair** (often requires grinding or replacing seats).

- **Deck machining** (if warped, requiring a professional machine shop).

- **Flow bench testing** (to ensure proper airflow after modifications).

These costs can add up quickly, especially if the head has significant internal damage.

3. **Limited Stock Availability** While not rare, HD1260A heads may not be as commonly available as stock LS1 heads. Prices can fluctuate based on demand, and finding a head in good condition may require patience or a wider search.

4. **Potential for Modification Confusion** Some HD1260A heads may have been previously modified (e.g., ported, polished, or equipped with aftermarket valves). Without proper documentation, it can be unclear what has already been done, leading to unnecessary or redundant work.

5. **Thermal Management Challenges** The HD1260A is designed for high-performance use, which often means higher operating temperatures. If the cooling system (radiator, water pump, thermostat) is not upgraded, the head may be prone to overheating, especially under forced induction.

6. **Risk of Hidden Issues** Even if the head looks good externally, internal problems (e.g., cracked combustion chambers, seized valves, or corrosion) may not be visible without disassembly and inspection. Buying from a trusted seller with inspection reports is crucial.

---

### **Conclusion:**

Buying a used **HD1260A LS1 cylinder head** can be a **great investment** if you are building a high-performance or forced-induction engine, as it offers superior airflow and durability compared to stock heads. However, it requires **careful inspection, testing, and potentially significant restoration work** to ensure reliability.

If you are running a **naturally aspirated** or **low-to-moderate power** build, a **stock LS1 head** may be a more cost-effective choice. The HD1260A is best suited for **turbocharged, supercharged, or high-RPM applications** where its larger valves and improved flow justify the extra cost and effort.

---

### **Recommendation:** 1. **Inspect Thoroughly Before Purchase:**

- Check for **cracks, warping, or corrosion** on the deck and combustion chambers.

- **Bore scope the valves** for wear, recession, or pitting.

- **Test the head on a flow bench** to ensure proper airflow (intake and exhaust).

- Verify **valve spring condition** (no broken springs or excessive wear).

- Confirm **rocker arm and pushrod** integrity (no excessive play or damage).

2. **Consider a Professional Valve Job:**

- If the head is worn, budget for a **full valve job** (replacing springs, retainers, and stems) and **exhaust valve recession repair** if needed.

3. **Upgrade Supporting Components:**

- If using the head in a **forced-induction build**, ensure the **cooling system, fuel system, and ignition** are upgraded to match the head s capabilities.

- Consider **aftermarket valve seals and guides** if oil leaks are a concern.

4. **Buy from a Trusted Source:**

- Prefer sellers who provide **detailed inspection reports, flow test results, or proof of service history**.

- Avoid heads with **unknown modification history** unless you are prepared for unexpected repairs.

5. **Weigh Cost vs. Benefit:**

- If you are on a **tight budget**, a **restored stock LS1 head** may be a better choice unless you specifically need the HD1260A s performance characteristics.

- If you are **building a high-power engine**, the HD1260A is a **strong, proven choice** just ensure it is in good condition before purchase.

**Final Verdict:**

The **HD1260A LS1 cylinder head is a high-quality, performance-oriented component** that is well-suited for advanced builds. However, it demands **due diligence in inspection and potential restoration work**. If you are prepared for the effort and cost, it can be an excellent addition to a high-performance engine. For less demanding applications, a stock or lightly modified head may be a more practical option.

Details:

Guide work performed/replaced with new guides or liners as needed. 1 Remanufactured Cylinder head, Fits 1999 04 5.7L Chevy Camry, Corvette LS1 Engine 1999 02 Pontiac Fire bird Engine, Will work with Casting numbers 241, 853, Head was remanufactured by. Process Includes. Windy City Engine Parts.

Pressure tested to insure no leaks in casting. Head is assembled with all new valve seals. Milled to ensure straightness and correct finish. All valves are reground or replaced with new.

Cut valve seats. Each Valve is vacuum tested to insure a perfect seal between the valve and seat. All machine work performed on the latest state of art equipment. All parts are thoroughly cleaned and inspected before assembly.

part #: hd1260a price

  • $450.00

specifications cylinderheapar:

  • for models: Ls1
  • for makes: Chevy
  • brand: Windy City Engine Parts
  • mpn: Hd1260a
  • part type: Cylinder Head
  • oe/oem part number: 853, 241
  • location: 10b7

offer cylinderheapar:

  • quantity: 2
  • sold: 0
  • availability: In Stock
  • options: Ship-to-home
  • started: February 16, 2026

seller cylinderheapar:

  • City: Chicago, Illinois
  • # reviews: 2744
  • rating: 99.9%

returns cylinderheapar:

  • policy: No Returns

general cylinderheapar:

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

payments cylinderheapar:

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

shipping cylinderheapar:

  • service: UPS Ground, UPS Next Day Air Saver, UPS Next Day Air
  • type: Calculated
  • class: Standard, One-day
  • cost: $69.71
  • carrier: UPS
  • transit: 3-5 Days
for models: ls1, for makes: chevy, part type: cylinder head, oe/oem part number: 853, 241, location: 10b7,
category: auto parts > car truck parts accessories > engines engine parts > cylinder heads, sku: 11526492452875762,
Windy City Engine Parts HD1260A Is Similar To:
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1 offer $450.00 USD
  • Remanufactured. Offer #1 priced at $450.00 + $69.71 shipping estimate = $519.71* total. Head is assembled with all new valve seals. 1999-2004 5.7L Chevy Camaro, Corvette LS1 engine.+$69.71 shipping

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