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Description
Holley Gen III Hemi Hi-Ram EFI Manifold 300-658Gen III Hemi EFI for use with 80 and 92mm Mopar Style Throttle Body As Cast Finish Fits 2009 up 5. 7L, 2005 2010 6. 1L, and 2011 up 6. 4L Features: Add Even More Power to the Gen III Hemi Engine with a Holley Hi Ram Intake Manifold Fits Gen III Hemi Engines w Large Intake Ports (1. 70? Height x 1. 88? Wide) ? fits 2009 up 5. 7L, 2005 2010 6. 1L, 2011 up 6. 4L) Cast Aluminum Construction w Natural Satin or Black Finish Runner Length and the Tapered
Gen III Hemi EFI for use with 80 and 92mm Mopar Style Throttle Body - As Cast Finish - Fits 2009-up 5.7L, 2005-2010 6.1L, and 2011-up 6.4L
Features:
- Add Even More Power to the Gen III Hemi Engine with a Holley Hi-Ram Intake Manifold
- Fits Gen III Hemi Engines w/ Large Intake Ports (1.70? Height x 1.88? Wide) ? fits 2009-up 5.7L, 2005-2010 6.1L, 2011-up 6.4L)
- Cast Aluminum Construction w/ Natural Satin or Black Finish
- Runner Length and the Tapered Cross Section Designed to Perform Well for a Wide Range of Engine Configurations
- Includes EFI Fuel Rails w/ -8 AN O-Ring Fittings & Large Passages to Accommodate High Fuel Flow and Dampen Pressure Pulsations in the Fuel System
- Works with Gen III Hemi Injectors & Bosch EV-1 Style Injectors
- O-Ring Seal to Head ? Large Retained O-rings Offer Superior Original Equipment (OE) Style Sealing & Are Easy to Replace
- Billet Oil Fill Cap ? Attractive Low Profile Design
- Positive Crankcase Ventilation (PVC) Ports w/ Adapter Fittings
- Overall Height: 11.59?
- Port for OE Style Manifold Absolute Pressure (MAP) Sensor (1 or 2 Bar)
- Cast-In Pads for Adding Nitrous Nozzles
- Manifold Base ? Available Separately for Custom Induction Systems
Specs:
| Basic Operating RPM Range | 1500-7000 RPM |
|---|---|
| Brand | Holley EFI |
| Color | Natural |
| Construction | Cast |
| EGR Port | No |
| Emission Code | 3 |
| Engine | GEN 3 HEMI |
| Finish | Satin |
| Flange Style | EFI |
| Front Height | 11.59 inch |
| Front Maximum Height | 11.59 IN |
| Fuel System Type | EFI |
| Grade Type | Performance |
| Injector Style Provision | EV-1, Gen III Hemi |
| Inlet Size | 95mm |
| Intake Port Gasket(s) Included | No |
| Manifold Type | Hi-Ram |
| Material | Aluminum |
| Nitrous Bung(s) Included | No |
| Plenum Finish | Natural |
| Port Size | 1.70" x 1.88" |
| Product Type | Intake Manifold |
| Rear Height | 10.35 inch |
| Rear Maximum Height | 10.35 IN |
| Removable Runners | No |
| RPM Power Band | 1500-7000 |
| RPM Power Band | 1500-7000 RPM |
| Runner Length | 6.65 inch |
| Sale Category | Air and Fuel Delivery |
| Single Or Dual Plane Type | Single Plane |
| Style | EFI |
| Throttle Body Bore Diameter | 95 MM |
| Throttle Body Included | No |
| Throttle Bore | 95mm |
| Type of Component | Intake Manifold |
| Vacuum Ports | (2) 3/8" NPT & (1) 1/4" NPT |
| Warning | California Proposition 65 |
| Warranty | Limited 90 Day |
Application:
| Year | Make | Model | Submodel |
|---|---|---|---|
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Exchange/Return Notes
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4.2 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 1
Beautiful, but doesn’t last
Color: 9910: All black
It’s beautiful, but does not last. Purchased as a gift for my husband and it stopped working altogether and wasn’t able to be wound after a few weeks. We returned it. He really missed having it so we ordered a new one, hoping to have better luck. This one lasted a few months but the needle for then”Day of the week” has since fallen off today. Very disappointing.
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Reviewed in the United States on February 8, 2026
★★★★★ 5
Recomendado
Color: 6638: Gold band & Green dial
Excelente! Me gustó mucho y si cumplió con mis expectativas
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2026
★★★★★ 5
Exelente
Color: 6638: Gold strap & Blue dial
Ha salido muy bueno
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Reviewed in the United States on April 8, 2026
★★★★★ 5
Compared to g-shock?
Color: Black/Yellow
Firstly random public reviews can be comical…”it’s has a battery, terrible, One star” or “I don’t like yellow, one star” omg peoples do better. I’ll review this while comparing to an older style of g-shock from the same era. I’ll start by saying this timex rocks, for me in my mid 50’s it’s so retro and nastalgic, brings back memories, I may have even owned this model back in the day. What’s great about it- the display, larger digits than the typical g-shock and they are super crisp, clear and easy to read. The indiglo is awesome. This is the most accurate quartz watch I have aside from the atomic g-shocks that adjust themselves daily. I prefer a chunky watch and the g-shocks do a better job in that department. i feel this watch is rugged, but I’d still give the nod to g-shock in this department. 200M water resistance is the gold standard and this watch has it which I love for peace of mind for any water based activities. This is a 5 star watch at a great price. I still love some aspects of a g-shock better but its just preference.
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Reviewed in the United States on February 11, 2026
★★★★★ 5
Everybody loved the high-tech style and amazing functionality
Color: Black/Yellow
I'm not a Timex fanboy, and I've had my fair share of problems with the Expedition line, so this review is my honest opinion as a man who's worn Armitrons and Timexes since I was 10.
I remember in 1992 when the Timex Ironman Triathlon with Indiglo was first launched - My older brother got one, then me and my neighbor friends. Everybody loved the high-tech style and amazing functionality. Even Bill Clinton was rock'n this watch, for those who don't remember.
Quite simply, this is the perfect watch at a great price, in my opinion. Perfect as a gift for any man, and I think the original black/olive drab/yellow coloration is still the coolest. In this day and age of smartphones, it still pays to have this watch. The alarm is less annoying sounding than a cellphone, and doesn't wake up the entire house. To turn it off, just tap the watch, no more reaching for the phone or alarm clock. Timer comes in handy for anything; timing my kids' timeouts when they get in trouble, 15 minutes room clean-up times, etc. Chrono is fun for anything you wanna use a stop-watch for. I set the second time zone for Vietnam time. It really is a million times easier to use this watch for all of its functions than reaching for a smartphone or alarm clock, etc. If you;ve been relying on your phone for a few years as a watch/chronograph/timer/alarm - you'll be so glad you finally got a watch like this.
I've never tried a smart-watch, however I feel those are not as necessary,durable or practical as a real watch. Other Timex watches I've used were freakin' trash - couldn't throw em away fast enough. Might as well open the box while holding it over a trash can, so the watch can fall right in when you open the box. That's my experience with the Expedition line-up.
Back to this watch: The only thing I wish this watch could do is measure activity thermogenesis (calories expended throught the day) or work as a pedometer, which some smart-watches and other devices can do. I also cannott decide if I like this new, slightly larger, heavier/thicker design of the Ironman Triathlon over the 1990s design. The 90s models styling was "tight to death'. Star-split buttons were seperated. The mode button was yellow. Overall more compact and bi-cultural;by that I mean it looked great as an athletic watch or a politician, business man wathc. This new model is bigger, better ingress/shock resistance, and more of an athletic style over all, and is a little less colorful.
I almost went with the G-shocks, but they still just look like crap and are waay to expensive. Sure, they have some better features, can survive WWIII, but I am a traveler. I need a watch that can work in the dark in any environment. The G-shocks are often using some kind of solar battery crap and rely on cathing a signal from an American automic clock in Colorado - good luck with that while your in Thailand on vacation.
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Reviewed in the United States on December 31, 2016