Description

GM Pontiac Grand Prix, Sunbird, Grand Am, Venture 3.1-3.4 OHV V6 Cylinder Head

Upgrade your engine with this high-quality GM Pontiac Grand Prix, Sunbird, Grand Am, Venture 3.1-3.4 OHV V6 Cylinder Head. Designed to fit multiple Pontiac models, this cylinder head ensures optimal engine performance and reliability. It’s perfect for those who need replacement parts with accurate fitment for the following models and years:

• Pontiac Sunbird (1989-1993) – Cast Number: 651-170-696
• Pontiac Grand Prix (1989-1995) – Cast Numbers: 651, 696, 511, 274
• Venture Models – Refer to casting number for compatibility

The casting number can be found behind the dipstick tube and on the spark plug side of the head. When identifying your casting number, please ensure you provide it to guarantee the correct fitment. Specifically, for casting number 487, we will need to know the size of the rocker bolt hole (either 8mm or 10mm), and whether the head has air injection holes at the top of the two exhaust ports.

Key Features

• Engine Type: Designed for 3.1-3.4 OHV V6 engines.
• Rocker Bolt Size: Include the details for rocker bolt hole size and air injection hole options.
• Excluded Cast Numbers: This sale does not apply to casting numbers 234 and 810.
• Core Return Required

Clearwater Cylinder Head – Core Returns Policy

At Clearwater Cylinder Head, core returns help us provide top-quality, affordable cylinder heads. Returning your old core allows us to reuse key components like keepers, springs, and retainers, keeping our products reliable and cost-effective.

Core Charge Policy

A core charge is not billed upfront, but if the used core is not returned within 30 days of receiving your new cylinder head, the core charge will be applied.

Why Core Returns Are Important

• Helps maintain OEM-quality cylinder heads.
• Keeps prices low by reducing the need for new parts.
• Supports sustainability by minimizing waste.

What to Return

To ensure a smooth remanufacturing process, please send back all parts originally included, such as:

• Rocker arms
• Camshafts (if applicable)
• Any other hardware that came with your purchase

Simple & Free Return Process

• A prepaid core return label is included in a plastic sleeve on the box.
• Pack your core with all its components, attach the label, and drop it off—no extra cost to you.
• Returned cores are inspected and recycled for future use.

Working Together for Quality & Sustainability

By returning your core, you help us keep costs down and ensure a steady supply of high-quality cylinder heads. If you do not have a core to return, please inquire about your options.

Thank you for supporting our process and the automotive industry!

Clearwater Cylinder Head, Inc. – Quality You Can Trust

At Clearwater Cylinder Head, Inc., we thoroughly clean, inspect, and pressure test all our cylinder heads. Using state-of-the-art equipment, we perform all seat and guide work, resurface the head to the required finish, and ensure a perfect seal between the valve and the seat with quality valve seals and vacuum testing. Therefore, our commitment to quality craftsmanship ensures that every cylinder head is ready for installation and built to last.  Whether you’re replacing a worn cylinder head or upgrading for enhanced performance, our products meet or exceed OEM standards.

Shipping Information

Rates apply to the continental United States only. For Alaska, Hawaii, Guam, Virgin Islands, and Puerto Rico, please call or email for shipping rates. We ship worldwide, with insurance, packaging, and handling included in the shipping price. International bidders, please include your city, country, and postal code when inquiring about shipping fees.

Warranty Information

• Coverage: Clearwater Cylinder Head, Inc. provides two-year unlimited mileage parts warranty. A warranty card is included with your invoice.
• Terms: Acceptance of the head includes acceptance of the warranty terms:
  • Heat tab must be intact and unaltered.
  • Returns must be accompanied by a copy of the invoice and a Return Authorization number.
  • Warranty covers parts only; no labor or incidental costs.
  • Warranty does not cover damage from improper installation, overheating, abuse, or neglect.

Contact Us

If you have a rare or hard-to-find cylinder head, let us rebuild it for you. We have thousands of heads in stock and deal with all makes and models. If you don’t see the cylinder head you need, please contact us at 1-800-572-1963. Our knowledgeable staff is ready to assist you.

Operating Hours: Monday – Friday, 8 AM to 5 PM EST

Address: 5100 Ulmerton Road #2, Clearwater, FL 33760, USA

Additionally, Learn More and Shop with Us

• Pontiac Grand Prix – Overview: Pontiac Grand Prix
• Check out this Grand Prix Cylinder Head – Clearwater Cylinder Heads – Grand Prix Cylinder Head