Free tools Windows power users keep installed
One-click scans. No signup required.
The Pontiac GTO used three main V8 displacement families in its classic 1964–1974 run: 389, 400 and 455 cubic inches, followed by a 350 in 1974. When the GTO returned for 2004–2006, it entered a different engine era with modern GM LS-family V8s. The clearest factory-documented landmarks are the 1964 389 and the 2005 6.0-liter LS2; the year-by-year details below distinguish established milestones from a complete option list, which the available sources do not establish.
Classic GTO engines: 1964–1974
The original GTO began as a performance option package for the Tempest LeMans, not as a separate model. General Motors’ Heritage Collection says its 1964 package included a 389 CID V8 and records 32,450 GTO-package Tempests sold that model year. The 389 remained the core engine family in the early years, then gave way to 400 CID engines in 1967. 455 CID options joined the lineup in 1970, and the final classic-year package used a 350 CID V8.
This is a family-level timeline, not an exhaustive ordering guide: the sources consulted do not verify every option and special-order combination for every model year.
1964–1966: 389 CID and Tri-Power
GM’s Heritage Collection rates the 1964 389 at 325 hp and its optional Tri-Power version at 348 hp. Tri-Power used three two-barrel carburetors. A year-by-year history reports 335 hp for the 1965 four-barrel 389 and 360 hp for the Tri-Power version. It describes the 389 lineup as continuing in 1966, when the XS option—with a more radical cam, stiffer valve springs and a functional air intake scoop—was an early Ram Air engine. That history reports 190 XS engines built.
#1 Best Overall
- Never Let a Dead Battery Ruin Your Drive. The LISEN 4 in 1 Retractable Car Charger delivers reliable power for your entire journey. Compatible with standard 12V cigarette lighter sockets, it keeps phones, tablets, and devices charged during daily commutes, road trips, and long drives — the perfect practical gift for dads, truck drivers, and anyone who lives on the road.
- Daily Driver Essential: Always Ready When You Need It. Featuring two retractable cables ( USB C & Old iPhone Charging Cable ) that extend up to 31.5 inches and dual USB ports, this charger solves cable clutter while charging up to 4 devices simultaneously. Ideal for busy fathers, commuters, and families who want a tidy car and never worry about low battery again.
- Deliver full-speed PD fast charging for iPhone 18 Pro Max & iPhone 18 Pro Max & iPhone 18 Pro right inside your car. The built-in 45W PD USB-C port hits the peak charging speed for these latest iPhone models, juicing up your phone to 50% power in just 15 minutes while you drive.(Note: Maximum 45W PD output is available under 24V vehicle power supply. When used with standard 12V car sockets, the peak output is limited to 36W.)
- Standard 12V Power Solution: Designed as a dedicated USB power supply for charging devices. Note: Does NOT support CarPlay, Bluetooth, or data transfer. Compatible with most phones, tablets, and small electronics. This retractable charger is a core car organization tool, keeping your vehicle tidy. Not compatible with Micro-USB devices.
- Clutter-Free Tech Organization: Featuring dual USB ports and retractable cables, the LISEN 4 in 1 charger provides a clean car storage solution. Perfect for truck enthusiasts or as a thoughtful gift for drivers, it supports fast USB-C charging for devices like the iPhone 18Pro & iPhone 18 ProMax. Keep your vehicle organized while ensuring efficient power delivery for all your tech on the road.
Those horsepower figures come from a secondary year-by-year summary, whereas GM’s historical page directly supports the 1964 ratings. Treat the figures as period factory ratings, not modern measured output.
1967–1969: the 400 arrives; Ram Air variants
For 1967, 400 CID engines replaced the 389 in the GTO lineup. The year-by-year overview describes two-barrel and four-barrel versions and the end of Tri-Power availability. Higher-performance Ram Air variants followed: that overview identifies Ram Air II for 1968 and Ram Air IV for 1969, while the RPO Archive lists Ram Air III and IV for 1969–1970. Because some RPO entries carry different confidence levels, this variant history should not be read as a definitive factory ordering chart.
Rank #2
- High Quality Material: The coaster is made of environmentally friendly silicone, safe, non-toxic and odorless. Soft with toughness, easily embedded in the cup holder. Very durable, wear-resistant, long service life. High temperature resistance, can withstand 100 ℃ high temperature water cups.
- Wide Compatibility: The coaster has a diameter of 3.15 inches and a height of 1.18 inches, which is widely used in most vehicles, such as SUV, sedan, MPV, etc., as long as the size fits your car cup holder.
- Protection Function: Our car cup holder coaster has a carry handle design and a stand-up ring edge on its edge to effectively prevent food crumbs, drinks and water from leaking out and preventing the car cup holder from getting dirty.Meanwhile,Thickened design effectively prevents the cup holder from being scratched by the cup when driving on bumpy roads and eliminates the annoying thumping sound, making your journey more enjoyable.
- Easy to Use and Clean: With embedded installation, you just need to put it flat on the car cupholder. It is also very quick to remove, there is a small bump on the coaster, pinch it and you can easily remove the coaster. It is very easy to clean, rinse with water or wipe with a wet towel (be careful not to clean with sharp tools).
- 100% Satisfaction: Our products have quality assurance, if you have questions or are not satisfied after receiving the product, don't worry, please contact us as soon as possible, we provide after-sales service.
1970–1973: 400 and 455 options
The 455 CID V8 joined the GTO choices in 1970 alongside 400 CID engines. The engine history reports 455 HO figures for 1970 and 1971–1972, and describes 400 and 455 choices continuing into 1973. The RPO Archive identifies the 1973 GTO as an option package on the LeMans or LeMans Sport and lists a 400 four-barrel as standard with a 455 optional. These are useful landmarks, but the complete factory combination list—especially for 1971 and 1973—is not established by the available year-specific material.
1974: 350 CID in the Ventura-based GTO
For 1974, the GTO package moved to the Pontiac Ventura and used a 350 CID four-barrel V8. The RPO Archive gives its rating as 200 hp; the year-by-year engine history likewise identifies a sole 350 CID offering rated at 200 hp.
The Tool Desk
Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Rank #3
- ✅【Designed for Magsafe】 - The most fashionable iphone car mount in 2026 Magsafe is designed for iPhone 18 Pro Max/17/16/15/14/13/12 Pro Max Mini and official Magsafe cases and other magnetic phone cases and can be fixed directly to these phones without the need to affix metal plates. All Android Phones Will Work: Metal rings are provided; they fit cases and other phones without magsafe. Based on Unique Grandmaster Design (Protected by US Design Patent No. US D1,112,194 S)
- ✅【STRONG MAGNETIC MagSafe Car Mount】 - This powerful magnetic phone holder can create a powerful attraction that firmly supports your device while allowing you to drive without distraction. it easily and securely holds your phone through bumps, sharp turns or even sudden stops, no worrying of dropping your phone.
- ✅【SUPER STICK FORCE】 - VHB Dash Mounted Holders adhesive provides strong stick force between the dashboard and the car phone holder, which can firmly stick to any plane in the car, fix your device, adapt to a variety of road conditions such as sudden braking, speed bump, and rugged mountain road.
- ✅【SAFE DRIVING VIEW】 - Mini-size, not taking up space, it is placed in the dashboard without blocking the view at all, and does not need to look down at the device to ensure your safe driving. Cell Phone Car Mount is suitable for most cars, pickups, SUV, taxi; It is the best assistant for Uber and Lyft drivers
- ✅【360° FREE ROTATION】 - With an adjustable swivel ball joint, you can rotate your smartphone or device at your own will, providing the best viewing angle. Quickly pick and place with one hand, free your hands and make calls and GPS navigation more convenient
Revived GTO engines: 2004–2006
The revived GTO belongs to a separate modern engine chapter, not a continuation of the classic Pontiac 389/400/455 family. The available factory material supports one precise specification: Pontiac’s 2005 brochure lists an all-aluminum Gen IV 6.0L LS2 V8 producing 400 hp at 5,200 rpm and 400 lb-ft at 4,000 rpm, with a four-speed automatic or six-speed manual transmission.
J.D. Power’s model-history page also identifies the LS2 as the 2005 upgrade but gives torque as 395 lb-ft. For the factory brochure specification, use Pontiac’s 400 lb-ft figure; the discrepancy should be kept in mind when comparing reference sources. The material here does not establish exact 2004 or 2006 engine ratings, so no precise specification for those model years is asserted.
Rank #4
- Buyer's Guide: The seat guard for car seat between seat & console measures 15.75*2.7*1.53", suitable for gaps of 1.43-1.53" in width, please double-check carefully the distance between your seat and the center console before placing an order
- Storage and Filling in One: Differ from traditional single-function gap fillers, gap filler for car incorporates storage function, offers you the convenience of storing phones and various other items, so that you can access them at any time while driving
- Avoid Items Slipping: With the bumps and vibrations of the car, phones, keys may fall into the seat crevices, which is difficult to pick up, and distracts the driver's attention. Car gap seat filler fills gaps seamlessly to create an effective barrier
- Easy to Install: Car side seat gap filler is easy to install, simply insert it into the gap between the seat and the center console, gap seat filler for car can fit tightly without affecting the normal adjustment of the seat and the use of the seat belt
- Premium Material: Crafted from premium EVA material, our car seat side gap filler boasts a combination of wear-resistant, softness&durability. Maintenance is effortless, simply rinse and wipe to quickly clean the dust and debris in corners and crevices
How to compare GTO horsepower ratings
A horsepower number by itself does not make a sound comparison across GTO years. The year-by-year engine history notes that published figures changed with rating methods and emissions-era revisions; gross and net ratings should not be compared as if measured identically. Around 1970, adoption of the SAE method brought greater consistency, but the model year and rating basis still matter.
- Compare engines from the same model year where possible, and identify displacement and engine family.
- Include induction and variant details—such as four-barrel, Tri-Power or Ram Air—rather than treating every engine of one displacement as interchangeable.
- Label ratings as gross or net when the source specifies the basis; do not infer a basis the source does not state.
- For revived GTOs, keep LS1-era and LS2-era specifications distinct from classic Pontiac V8s.
Checking which engine belongs in a particular GTO
A model-year overview cannot establish what a specific surviving car left the factory with. Engines may have been replaced or modified, so verify the car using its own records rather than relying on displacement or badges alone.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Quick Recap
Best Value
- 🔰 UPGRADED SIDE STORAGE DESIGN - Our console cover is thinner than the old one, universal for all seasons. There is an 8.66*5.12 inch storage pocket design on each left and right side, expanding the storage space, convenient and practical. Meet the storage needs of the main passenger seat, you can store your cell phone, keys, tissues, ID and some other small daily items.
- 🔰 PREMIUM MICROFIBER LEATHER MATERIAL - This car center console cover is made of quality microfiber leather material, soft and skin-friendly touch. Exquisite and fashionable diamond shaped stitching, every detail is in place. Inside the car center console cover is made of thickened memory foam, even after squeezing, it can slowly recover to its original shape.
- 🔰 RELIEVE DRIVING FATIGUE - The arm rest cover for car adopts ergonomic design, giving just the right amount of arm support, effectively dispersing elbow pressure and relieving driving fatigue. Protect your car's center console from getting dirty or scratched. Especially suitable for long time driving or long distance traveling, bringing you a new experience of relaxation and comfort!
- 🔰 NON-DESTRUCTIVE INSTALLATION - This car console cover is designed with an elastic band for a firm fit and not easy to shake. And the back side is full of protruding dots, which can effectively avoid the armrest cover from slipping and shifting. All you need to do is to open the center console cover, put the elastic band directly into the cover and then close it.
- 🔰 BUYER'S GUIDE - You will receive a car armrest storage box with the size of 12.13*7.80 inch, please measure the size of your car's armrest storage box before you buy. We have prepared five simple and beautiful colors for you, you can choose according to your own preferences. Suitable for most of the vehicles on the market, such as car, truck, SUV, RV, van, etc.
- Consult the GTO Association of America archive for factory manuals, brochures and available sections of the 1964 Tempest chassis manual.
- Compare the engine unit number with the original Protect-O-Plate, following the archive’s guidance.
- Use Pontiac Historical Services billing documentation to confirm how the vehicle was originally ordered.
Sources for the engine timeline
- General Motors Heritage Collection — 1964 GTO package, 389 ratings and sales figure.
- Web-Cars GTO engine history — secondary year-by-year overview of displacement families, ratings and variants.
- RPO Archive — selected GTO engine and package entries; some entries have varying confidence.
- Pontiac/GM 2005 brochure — LS2 factory specification.
- GTO Association of America archive — manuals and vehicle-identification guidance.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
