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Description
Holley 0-82851SA - 850 CFM Aluminum Street HP Carburetor - 850 CFM Aluminum Street HP Mechanical Secondary-4150Overview: Tire smoking performance has never been so affordable! The all new Aluminum Street HPs weigh up to 40% less and are even easier on your wallet. Holley is proud to introduce the all new Aluminum Street HP. They utilize the best features from Holley's Race Bred 4150 HP carbs, but are tamed for street and light competition use. The Street HP features an aluminum contoured main body design taken from the race winning 4150 HP and has a tumble
Overview:
Tire smoking performance has never been so affordable! The all new Aluminum Street HPs weigh up to 40% less and are even easier on your wallet. Holley is proud to introduce the all new Aluminum Street HP™. They utilize the best features from Holley's Race Bred 4150 HP™ carbs, but are tamed for street and light competition use. The Street HP features an aluminum contoured main body design taken from the race winning 4150 HP™ and has a tumble polished shiny finish and screw in air bleeds for precision tuning capabilities. The metering system includes a timed spark port for a vacuum advance distributor and is calibrated for a hot street/strip engine setup for outstanding throttle response, drivability and maximum performance. The Aluminum Street HP takes all the great features from the race bred HP and the Double Pumper and combines them into the perfect street/strip carburetor.
Features:
- Aluminum construction for weight savings and long lasting good looks
- Optimized street/strip calibration for outstanding throttle response and drivability
- Contoured venturi inlet offers balanced airflow for increased horsepower
- Screw in air bleeds for precision tuning capabilities
- Four corner idle for precise idle control
- Mechanical secondaries for awesome tire turning performance
- Dual accelerator pumps for additional fuel under initial acceleration
- Dual feed fuel inlets for constant high volume fuel delivery
- Available in 650, 750, 850, and 950 CFM versions
- Intended for lightweight vehicles w/ manual trans or automatics with high stall & low gearing
- 100% wet-flow tested by Holley technicians to assure it arrives ready to run!
- Compatible with GM, Chrysler, and Ford A/T kickdown linkage. Additional parts may be required.
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| Universal |
Specs:
| Barrels | 4 |
|---|---|
| Booster | Down Leg |
| Brand | Holley |
| Carburetor Use | Performance and Race |
| CFM | 850 |
| Choke | None |
| Condition | New |
| Emission Code | 3 |
| Finish | Shiny |
| Fuel | Gasoline |
| Marine Use | No |
| Material | Aluminum |
| Model | 4150 |
| Primary Main Jet | 80 |
| Primary Power Valve | 4.5 |
| Primary Pump Nozzle Size | 28 |
| Product Type | 4150 Model Carburetor |
| Secondaries | Mechanical |
| Secondary Main Jet | 80 |
| Secondary Pump Nozzle Size | 28 |
| Supercharged Application | No |
| Throttle Bore | 1.688 inch |
| Venturii Size | 1.563 inch |
| Warning | California Proposition 65 |
| Warranty | Limited 90 Day |
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4.5 ★★★★★
Based on 2119 reviews
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Product Reviews
★★★★★ 4
True history
Format: Hardcover
Good information
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
★★★★★ 5
Outstanding book!
Format: Hardcover
A great read!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2026
★★★★★ 5
... this book was instrumental in planning and is highly recommended. In a somewhat bullet format I'll add a ...
Format: Paperback
We finished the Wonderland yesterday- this book was instrumental in planning and is highly recommended. In a somewhat bullet format I'll add a few notes...
I think it is better to deliver your food caches rather than mail them- discuss with the rangers THE ACTUAL PICK-UP POINTS, and have your map with you- they will give you current trail and water conditions, this proved to be very valuable.
We opted for a 12 day hike, after just a few days we realized that we had underestimated our hiking ability and changed out schedule to a 9 day hike. The rangers were very good about helping us with the changes, keep a slower plan and a faster plan in mind as the hike progresses (don't forget to get word to the rangers to re-date your food caches if you change your schedule).
Thank those rangers and back country guys when you see them-the trail is in splendid condition, the maintenance is ongoing. When you meet a man wearing a pack-board with a 55 gallon drum lashed to it and he is going to muck out one of the outhouses on the trail is really makes you think about all the steps that you are traversing, the water bars, the brush...on and on with the list.
Trail-trash... and I'm not talking about litter, there are some not so nice people on the trail who think nothing about leapfrogging a campsite because they "didn't like it" or the day was too long / short. That means that if you are a late arrival at a camp all the sites may be taken, then you have to ask to see permits and engage in eviction, the rangers need to hear about these guys and they leave the park "With extra paperwork:". One party we met started as a party of 3, but one of them became ill and suffered a fall resulting in an injury- so she was abandoned at Golden Lakes to fend for herself... dumped on the rangers. Point being, know your trail team- when you look at the map note where the roads are close by the trail should you need to get help.
The authors mention bugs... perhaps once or twice... they talk about deer flies and horse flies... but as much as they talk about it is still under emphasized, there are legions, hordes, armies of bugs at some of the campsites DON'T IGNORE THESE WARNINGS.
There was a great tip about putting apples / oranges / pears in your food caches- after a couple of days without fresh fruit these were a huge bonus. We also included some of the Hormel dinners- already hydrated and a nice break from the normal trail food.
All in all, this is essential equipment in planning your hike.
The Wonderland is aptly named- this one of the high churches in the outdoor religion, you will be constantly amazed!!
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Reviewed in the United States on July 16, 2015
★★★★★ 5
The Best Wonderland Trail book out there!
Format: Paperback
To plan my Wonderland Trail hike, I bought three different books, including this one. Tami's is by FAR the best. It offers great summaries of different sections as well as detailed descriptions. So many details are covered: permits, the Spray Park and Northern Loop options, packing, caching, conditioning, etc. There are numerous maps, and all of the charts at the back really helped me plan a well-informed itinerary. Great book!
I used a hard copy edition of this book to plan my Wonderland hike (since I still really like good old-fashioned books) and then downloaded the Kindle version to my phone to use for reference on the trail. After a quick read each night, I could hit the trail the next morning well-prepared for the day ahead!
I should point out that I did also bring along a Green Trails map of the Wonderland Trail, which I really only wanted to identify mountains, etc.
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Reviewed in the United States on September 6, 2017
★★★★★ 5
Best guide book I've ever purchased
Format: Paperback
This book is outstanding! Even though we backpacked the Northern Loop instead of Wonderland, there were sections in the book covering some of the camps we hiked to over our five nights in the back country. And then I ran the Wonderland Trail over three days the following week, so I was eagerly reading each night in my tent to see what I would be discovering on the trail. The author is a very good writer, knows her craft extremely well, and has obviously spent ample time in this absolute treasure of a national park. Thank you so much for writing such a valuable book.
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Reviewed in the United States on August 26, 2020