Description
Part#: ALL-20138
Manufacturer: Chevrolet
Year Range: 85-94
Engine Size: 2.8/3.1L - 173/189ci - V6
Description: 85-94 Chevy 2.8/3.1L - 173/189ci - V6 - Aluminum - 651/696 Cylinder Head
Unlock the potential of your Chevrolet vehicle with our Chevrolet 2.8/3.1L V6 Aluminum Cylinder Head, part number ALL-20138. Designed to exceed OEM specifications, this cylinder head is meticulously crafted to deliver unparalleled performance and reliability for model years ranging from 1985 to 1994.
Crafted by Chevrolet, a name synonymous with quality and innovation in the automotive industry, our cylinder head is engineered to optimize the performance of your vehicle's engine. Whether you're a DIY enthusiast or a professional mechanic, you can trust in the precision engineering and superior craftsmanship of our cylinder head.
Featuring a durable aluminum construction, our cylinder head is built to withstand the rigors of daily driving while maintaining optimal performance levels. The 2.8/3.1L V6 configuration ensures a perfect fit for your Chevrolet vehicle, providing seamless integration and enhanced compatibility.
With a displacement ranging from 173ci to 189ci, our cylinder head offers the perfect balance of power and efficiency, allowing you to experience smooth acceleration and improved fuel economy. Whether you're cruising down the highway or navigating city streets, our cylinder head delivers the responsive performance you can rely on.
At the heart of our Chevrolet cylinder head is a commitment to quality and excellence. Each unit undergoes rigorous testing and inspection to ensure it meets our stringent standards for performance and durability. Backed by Chevrolet's reputation for excellence, you can trust that our cylinder head will exceed your expectations.
Enhance the performance and reliability of your Chevrolet vehicle with our Chevrolet 2.8/3.1L V6 Aluminum Cylinder Head. From its precision engineering to its durable construction, every aspect of our cylinder head is designed to deliver unmatched quality and performance.
If you're looking for help or have any questions, our expert support team is available through our contact form, by phone at 866-766-9955, or via email at sales@alliedmotorparts.com. We're dedicated to assisting you every step of the way. For detailed information on cylinder heads, visit our blog section.
Learn more about Chevrolet Cylinder Heads.
This Cylinder Head has a core charge of $50.00 included in the cost. This charge is FULLY REFUNDED upon return. We will include a prepaid label for the return freight.
Compatible Vehicle
| MAKE | MODEL | YEAR | ENGINE |
|---|---|---|---|
| Chevrolet | Beretta | 1990-1991 | 3.1L 189Cu. In. V6 GAS OHV |
| Chevrolet | Beretta | 1993-1994 | 3.1L 189Cu. In. V6 GAS OHV |
| Chevrolet | Cavalier | 1993-1994 | 3.1L 189Cu. In. V6 GAS OHV |
| Chevrolet | Corsica | 1990-1994 | 3.1L 189Cu. In. V6 GAS OHV |
| Pontiac | Grand Prix | 1989-1990 | 3.1L 189Cu. In. V6 GAS OHV |
Not sure this is your casting? Call 866-766-9955 with your casting number and your vehicle's year, make and engine, and we'll confirm it before you buy.
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.