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Description
Hays Billet Steel SFI Certified Flywheel - Big Block Ford - 12-240Overview: Hays Steel Flywheels are manufactured from certified billet material that will not break up under the stress of high RPM and severe punishment of racing. All Hays flywheels are certified S. F. I. spec 1. 1. This flywheel fits the big block internal balanced 352, 390, 427, 428, 429, 460 CID Ford for 1965 through 1972. This is a 184 tooth flywheel that weighs 40 lbs. Requires an 11 in Borg Beck Long or Mark XII clutches. This flywheel is
Overview:
Hays Steel Flywheels are manufactured from certified billet material that will not break up under the stress of high RPM and severe punishment of racing. All Hays flywheels are certified S.F.I. spec 1.1. This flywheel fits the big block internal balanced 352, 390, 427, 428, 429, 460 CID Ford for 1965 through 1972. This is a 184 tooth flywheel that weighs 40 lbs. Requires an 11 in Borg-Beck Long or Mark XII clutches. This flywheel is thicker than stock and may require a bellhousing spacing or a Lakewood bellhousing to eliminate interference. Flywheel bolts included. Other applications available.
Features:
- Fits BB Ford With Internal Balance
- 184 Tooth Flywheel
- Weighs 40 Lbs
- Requires 11 In Bbl Or Mark Xii Clutches
- Thicker Than Stock
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| 1970 | Mercury | Marquis | 390/6.4L V8 | |
| 1970 - 1973 | Mercury | Marquis | 429/7.0L V8 | |
| 1970 - 1973 | Mercury | Monterey | 429/7.0L V8 | |
| 1971 - 1974 | Mercury | Monterey | 400/6.6L V8 | |
| 1971 - 1978 | Mercury | Marquis | 400/6.6L V8 | |
| 1971 - 1973 | Mercury | Colony Park | 429/7.0L V8 | |
| 1971 - 1974 | Mercury | Colony Park | 400/6.6L V8 | |
| 1971 | Lincoln | Mark III | 460/7.5L V8 | |
| 1971 - 1978 | Lincoln | Continental | 460/7.5L V8 | |
| 1971 - 1973 | Ford | Thunderbird | 429/7.0L V8 | |
| 1971 - 1978 | Ford | Thunderbird | 400/6.6L V8 | |
| 1971 | Ford | M-400 | 390/6.4L V8 | |
| 1971 - 1978 | Ford | LTD | 400/6.6L V8 | |
| 1971 | Ford | LTD | 390/6.4L V8 | |
| 1971 - 1973 | Ford | LTD | 429/7.0L V8 | |
| 1971 - 1972 | Ford | F-350 | 390/6.4L V8 | |
| 1971 - 1972 | Ford | F-250 | 390/6.4L V8 | |
| 1971 - 1972 | Ford | F-100 | 390/6.4L V8 | |
| 1971 - 1973 | Ford | Country Sedan | 429/7.0L V8 | |
| 1971 - 1974 | Ford | Country Sedan | 400/6.6L V8 | |
| 1971 | Ford | Country Sedan | 390/6.4L V8 | |
| 1972 - 1974 | Mercury | Monterey | 460/7.5L V8 | |
| 1972 - 1978 | Mercury | Marquis | 460/7.5L V8 | |
| 1970 | Mercury | Monterey | 390/6.4L V8 | |
| 1972 - 1974 | Mercury | Colony Park | 460/7.5L V8 | |
| 1972 - 1976 | Lincoln | Mark IV | 460/7.5L V8 | |
| 1972 - 1976 | Ford | Thunderbird | 460/7.5L V8 | |
| 1972 - 1978 | Ford | LTD | 460/7.5L V8 | |
| 1972 - 1974 | Ford | Country Sedan | 460/7.5L V8 | |
| 1973 - 1997 | Ford | F-350 | 460/7.5L V8 | |
| 1973 - 1996 | Ford | F-250 | 460/7.5L V8 | |
| 1973 - 1979 | Ford | F-100 | 460/7.5L V8 | |
| 1975 - 1976 | Mercury | Montego | 460/7.5L V8 | |
| 1975 - 1976 | Mercury | Montego | 400/6.6L V8 | |
| 1975 - 1979 | Ford | F-150 | 460/7.5L V8 | |
| 1975 - 1976 | Ford | Elite | 460/7.5L V8 | |
| 1975 - 1976 | Ford | Elite | 400/6.6L V8 | |
| 1975 - 1996 | Ford | E-350 Econoline | 460/7.5L V8 | |
| 1975 - 1991 | Ford | E-250 Econoline Club Wagon | 460/7.5L V8 | |
| 1975 - 1980 | Ford | E-250 Econoline | 460/7.5L V8 | |
| 1975 - 1977 | Ford | Custom 500 | 400/6.6L V8 | |
| 1975 - 1976 | Ford | Custom 500 | 460/7.5L V8 | |
| 1975 - 1978 | Mercury | Grand Marquis | 460/7.5L V8 | |
| 1975 - 1978 | Mercury | Grand Marquis | 400/6.6L V8 | |
| 1975 - 1976 | Mercury | Cougar | 460/7.5L V8 | |
| 1975 - 1978 | Mercury | Cougar | 400/6.6L V8 | |
| 1975 - 1976 | Ford | Torino | 460/7.5L V8 | |
| 1975 - 1976 | Ford | Torino | 400/6.6L V8 | |
| 1975 - 1977 | Ford | Ranchero | 460/7.5L V8 | |
| 1975 - 1978 | Ford | Ranchero | 400/6.6L V8 | |
| 1975 - 1976 | Ford | Gran Torino | 460/7.5L V8 | |
| 1975 - 1976 | Ford | Gran Torino | 400/6.6L V8 | |
| 1977 - 1982 | Ford | F-350 | 400/6.6L V8 | |
| 1977 - 1982 | Ford | F-250 | 400/6.6L V8 | |
| 1977 - 1979 | Ford | F-150 | 400/6.6L V8 | |
| 1977 - 1979 | Ford | F-100 | 400/6.6L V8 | |
| 1977 - 1996 | Ford | E-350 Econoline Club Wagon | 460/7.5L V8 | |
| 1978 | Ford | E-100 Econoline | 460/7.5L V8 | |
| 1978 - 1979 | Ford | Bronco | 400/6.6L V8 | |
| 1977 - 1979 | Lincoln | Mark V | 400/6.6L V8 | |
| 1977 - 1979 | Lincoln | Continental | 400/6.6L V8 | |
| 1977 - 1978 | Lincoln | Mark V | 460/7.5L V8 | |
| 1977 - 1978 | Ford | LTD II | 400/6.6L V8 | |
| 1980 - 1982 | Ford | E-350 Econoline Club Wagon | 400/6.6L V8 | |
| 1980 - 1982 | Ford | E-350 Econoline | 400/6.6L V8 | |
| 1980 - 1982 | Ford | E-250 Econoline Club Wagon | 400/6.6L V8 | |
| 1980 | Ford | E-250 Econoline | 400/6.6L V8 | |
| 1980 | Ford | E-100 Econoline | 400/6.6L V8 | |
| 1996 | Ford | Econoline Super Duty | 460/7.5L V8 | |
| 1997 | Ford | F-250 HD | 460/7.5L V8 |
Specs:
| # of Teeth | 184 |
|---|---|
| Application | Ford |
| Brand | Hays |
| Emission Code | 5 |
| Engine | Big Block Ford |
| Engine Balance | Internal |
| Material | Steel |
| Product Type | Flywheels |
| SFI Approved | Yes |
| SFI Certification | 1.1 |
| Warranty | Limited 90 Day Warranty |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 5
Quality Product Easy to Use Awesome Privacy Great Price
Size: 4 Panel, Color: Black
I have Purchased 2 of these Room Dividers. One for my Nephew and One for my Son. They Both Say they are Sturdy and easy to setup and use. The Quality and Price are Great!
Easy to setup already assembled and Very well made. I would recommend this Product
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Reviewed in the United States on August 1, 2025
★★★★★ 5
Excellent privacy shade.
Color: Coal Black
This delivered on exactly what it promises. So happy with the quality for the value. The shades are a fabric, nylon like, that are attached with a pocket on one end and velcro that adheres around the bar on the other.
This was incredibly easy and straightforward to put together. Every piece was clearly labeled, coordinated with the instruction sheet, and fit perfectly. Honestly, I wasn’t planning to leave a review but I was so impressed by how clearly labeled and well explained the instructions were that I felt compelled to note it. Especially for anyone who doesn’t like putting things together, or is used to subpar instructions, this is leagues above the rest. It’s such a simple build anyway, but after buying so many things that barely fit as they should, this stands out.
It is lightweight and easy to move. Offers privacy when opened, then can be folded out of the way. It looks exactly as pictured. No complaints, it’s a solid item and worth the price.
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Reviewed in the United States on April 9, 2026
★★★★★ 5
Decent quality for the price
Color: Grey
Decent quality for the price. Other privacy screens were extremely out of my budget, but this looks and works just fine- I just needed something simple to place behind my couch to hide some clutter. It took me about a half hour to assemble, but it was easy enough.
It might be due to my carpeting, but I don't trust that the screen would be stable enough to stand freely without falling. Thankfully my
plan all along was to wedge the screen between the couch and a box of clutter anyway, so for me it works as l'd planned!
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Reviewed in the United States on April 10, 2026
★★★★★ 4
Overpriced but effective.
Color: Cream
I happened to get lucky and get a warehouse deal at an additional 30% discount. Even at $25, it feels a little overpriced. But it was easy to assemble and serves its purpose. If you line the Velcro up exactly, the panels sag, if you stretch past even, but where it still grips, they look pretty ok. It is very light and does fold very compact for easy storage.
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Reviewed in the United States on April 3, 2026
★★★★★ 5
Great price for a great product
Color: Coal Black
Excellent quality and great price to boot. Easy to assemble and folds up easily to be stored. We are using it as a privacy screen when we have company that needs to sleep on the couch and also to block off a hallway leading to a guest suite. It looks great and is as described in the ad
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Reviewed in the United States on December 16, 2025