Description
Part#: ALL-80002
Condition: New - Exceeds OEM Specifications
Manufacturer: Chevrolet
Year Range:
Engine Size: LS3
Description: Chevrolet LS3 250cc 75cc New Assembled Aluminum Cylinder Heads
Chevrolet LS3
Intake - 250CC
Exhaust - 82CC
Combustion Chamber - 69CC
New Assembled Aluminum Cylinder Heads One Pair (2) of heads.
New springs, retainers and valve locks. .650 lift Valve Springs
2.16 Intake 4N Stainless Steel Valve
1.59 Exhaust 4N Stainless Steel Valve
The cylinder head included in this listing will fit the vehicles listed below. It is also important to review/confirm the fitment notes above to ensure the vehicle specifics of the head are correct for your application. If you have any questions that this may not be the correct head for your vehicle or need help in locating the correct head, please contact us via phone or email prior to making a purchase.
Introducing the Chevrolet LS3 250cc & 82cc New Assembled Aluminum Cylinder Heads, a testament to excellence in automotive engineering and performance. These cylinder heads have been meticulously remanufactured to exceed OEM specifications, ensuring top-tier quality and reliability for your vehicle.
Designed by Chevrolet, a brand synonymous with innovation and meticulous engineering, these cylinder heads are engineered to provide peak performance and longevity. Whether you're a seasoned automotive aficionado or a casual driver, you can rely on the unparalleled quality of Chevrolet craftsmanship.
The LS3 engine size is synonymous with power and performance, and these cylinder heads are no exception. With a displacement of 250cc and 82cc, they offer the perfect balance of airflow and combustion efficiency, resulting in enhanced horsepower and torque for your vehicle. Whether you're tearing up the racetrack or gliding along the open road, rest assured that these cylinder heads will provide unmatched performance every time.
What sets these cylinder heads apart is their remanufactured status, which means they have undergone a rigorous refurbishment process to ensure they meet and exceed OEM standards. This meticulous attention to detail ensures that you're getting a product that is as good as new, if not better, at a fraction of the cost.
Whether you're aiming to enhance your existing configuration or swap out tired parts, these cylinder heads prove to be an ideal selection. Engineered with the trusted LS3 design, they ensure effortless compatibility with a diverse array of vehicles, simplifying the installation process. Plus, their aluminum construction not only ensures lightweight durability but also enhances heat dissipation for improved performance under the most demanding conditions.
If you're in the market for LS3 cylinder heads for sale, look no further. These remanufactured heads offer the perfect combination of performance, reliability, and value, making them an ideal choice for any discerning automotive enthusiast.
But why stop here? Explore our extensive collection of Chevrolet Cylinder Heads to find the perfect match for your vehicle. Whether you're looking for more cylinder head option for additional performance upgrades or OEM replacements, we have you covered. Should you have any inquiries or uncertainties, our dedicated support team of experts is readily available to provide assistance. Feel free to get in touch; we're committed to helping you make well-informed choices for your vehicle.
Upgrade your ride with Chevrolet LS3 250cc and 82cc New Assembled Aluminum Cylinder Heads today and experience the pinnacle of automotive performance and reliability.
If you need help or have any questions, our expert support team is just a message away! Use our contact form, call us at 866-766-9955, or send an email to sales@alliedmotorparts.com. We're eager to assist you in every way possible. For information on cylinder heads, be sure to check out our blog section.
Process & Warranty
Cylinder Head Rebuilding Process
1. Initial Inspection: As a unit comes to our shop, we give it an initial inspection to determine whether there is any reason the head should not proceed to rebuilding. This quickly catches problems such as cracks, casting damage and other conditions that would halt the process for that casting.
2. Teardown: The cylinder head is fully disassembled, which reveals other areas of potential damage to the casting. The parts and the head are separated and go through different cleaning processes.
3. Cleaning: Cast iron heads are cleaned in a thermal cleaning system — baked at 600° to reduce grease and oil to ash, then put through a steel-shot machine for a brilliant finish. Aluminum heads are baked at a lower temperature or put through a high-pressure wash, then glass-beaded.
4. Head Inspection: After cleaning, heads are pressure tested or Magnafluxed to find any cracks. All bolt holes, valve guides, valve seats and other areas are inspected for broken bolts, broken taps, cracked guides and other impairments. Straightness and cam bore wear are also checked.
5. Machining: All heads have guides installed to meet OE conditions and are resurfaced to far exceed factory specifications for surface finish. A three-angle valve job achieves valve seat runout under .001". Valves are ground for a perfect seal between valve and seat.
6. Assembly: New OE-style valve guide seals are installed. Springs are tested for proper seat pressure. Valve seat sealing is vacuum-checked for an airtight fit. Lifters are bled and rebuilt for zero lash after startup. Cams are polished and clearances are checked twice to meet OE oil clearances.
7. Final Inspection: Every head is visually inspected — surface finish, lash, bolt holes and all other areas — to ensure a quality cylinder head.
Questions about our cylinder head services? Call 1-866-766-9955.
Warranty — 12 months from purchase
Match the head before installation. We will not warranty an incorrectly installed head. Call us immediately with any questions or concerns about your purchase.
First 3 months:
- Repair or replacement of the cylinder head.
- Gasket set supplied for reinstallation.
- Labor calculated from book time at $25.00 per hour, up to a maximum of 10 hours.
- Replacement of fluids and filters.
Remaining 9 months:
- Repair or replacement of the cylinder head.
- Gasket set supplied for reinstallation.
- Replacement of fluids and filters.
- No labor is covered.
Warranty is void if:
- The head was improperly installed.
- The head was overheated (heat tab melted or missing).
- The head received insufficient oiling.
- The cooling system operated improperly.
Warranty returns must be sent to Allied Motor Parts uncleaned and fully assembled — any disassembly voids the warranty — and must be accompanied by proof of purchase. There is no warranty on threaded bolt holes after installation.
This warranty is in lieu of any other warranty, expressed or implied, including any implied warranty of merchantability or fitness for a particular purpose.
Quality Assurance
Here’s why our cylinder heads stand out:
Thorough Inspection: Every head undergoes a complete teardown, cleaning, and detailed inspection for cracks and imperfections.
Advanced Cleaning: Thermal cleaning for cast iron and high-pressure washing for aluminum ensures a brilliant finish.
Precision Machining: CBN resurfacing, triple-angle valve cuts, and guide installations exceed OEM specifications.
Rigorous Testing: Vacuum tests, tension checks, and pressure tests guarantee performance and durability.
High-Quality Components: New seals, plugs, and rebuilt lifters ensure optimal functionality.
Final Assurance: Each head is inspected, stamped, and stored in a climate-controlled environment.
Wide Availability: Over 2,000 cylinder heads for all makes and models, ready for repair or exchange.
Very reasonably priced , great customer service and beautiful product !






