Description
Part#: ALL-20126
Manufacturer: Pontiac
Year Range: 78-81
Engine Size: 2.5L - 151ci - L4
Description: 78-81 Pontiac 2.5L 151ci L4 w/ Smog- 702 Cylinder Head
This Cylinder Head has a core charge of $100.00 included in the cost. This charge is FULLY REFUNDED upon return. We will include a prepaid label for the return freight.
Upgrade your Pontiac's performance with the 78-81 Pontiac 2.5L 151ci L4 Cylinder Head with Smog-702 design. Carefully engineered to surpass OEM standards, this cylinder head stands as evidence of Pontiac's dedication to top-notch quality and precise craftsmanship.
Tailored for Pontiac models manufactured between 1978 and 1981, our cylinder head offers enthusiasts an ideal combination of performance and dependability. With an engine size of 2.5L and 151 cubic inches, it's engineered to deliver unparalleled power and efficiency, ensuring a smooth and responsive driving experience every time you hit the road.
Created with meticulous precision and meticulous attention to detail, this cylinder head undergoes thorough remanufacturing procedures to ensure it not only meets but surpasses the most stringent industry benchmarks. Every element is meticulously examined, purified, and machined to impeccable standards, ensuring peak performance and longevity.
One of the most important parts of your car's engine is the Pontiac Cylinder Head, which houses the springs, valves, and other vital components that help with combustion and power production. With its superior design and construction, this cylinder head ensures maximum airflow and combustion efficiency, resulting in enhanced horsepower and torque.
Whether you're speeding down the highway or dominating the track, this cylinder head ensures unparalleled performance and dependability. With it, you can fully unleash the power of your Pontiac engine without any compromises. Say goodbye to sluggish acceleration and poor throttle response. With the Pontiac Cylinder Head, you'll experience smooth and consistent power delivery, giving you the confidence to take on any driving challenge.
The cylinder head is environmentally responsible as well as performance-driven. With its Smog-702 design, it helps reduce harmful emissions, ensuring your Pontiac remains compliant with modern environmental regulations without sacrificing performance or efficiency.
Installation of the Pontiac Cylinder Head is a breeze, thanks to its precise fit and seamless compatibility with factory specifications. Whether you're a seasoned mechanic or a DIY enthusiast, you'll appreciate the ease of installation and the immediate improvement in your Pontiac's performance.
Don't settle for subpar performance – upgrade to the 78-81 Pontiac 2.5L 151ci L4 Cylinder Head with Smog-702 design and experience the difference firsthand. With its unrivaled quality, precision engineering, and superior performance, it's the perfect choice for Pontiac enthusiasts who demand nothing but the best.
For assistance or queries, please contact our expert support team via our contact form, call 866-766-9955, or email sales@alliedmotorparts.com. We're ready to help you at every step. Interested in cylinder heads? Visit our blog section for more information.
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.