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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
4.1 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
Really good!
Size: 128 Fl Oz (Pack of 1)
This is the best, it removes 90% of dirt, it is multi purpose I love it and and if the business goes well I’ll keep buying it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
★★★★★ 5
⭐️⭐️⭐️⭐️⭐️ “That ‘New Car Smell’ in a Bottle”
Size: 128 Fl Oz (Pack of 1)
I’ve been using Chemical Guys Interior Cleaner on my 2015 Subaru, and there’s something about this one that really nails that clean-car smell while doing everything you need:
🧼 Works Everywhere
• Safely cleans seats, head unit, center console, dash, and door panels—all without leaving greasy residue.
• Gentle enough for plastics and screens, tough enough to handle spills and grime.
🚗 That Fresh Car Smell
• Leaves behind a subtle, factory-fresh scent—not overpowering or artificial.
• Every time I get in, it feels like a brand-new ride.
💡 Easy to Use
• A quick spray and wipe is all it takes.
• No staining, no residue—just smooth, clean surfaces.
⸻
✅ Bottom Line:
If you care about that clean, fresh smell and want a product that actually cleans everything in your car interior, this is it. Fresh cabin feel with no greasy finish—perfect for a daily driver or family ride. Highly recommend!
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Reviewed in the United States on July 11, 2025
★★★★★ 5
Love this product
Size: 16 Fl Oz (Pack of 1)
Great value for money. Works in all interior and glass. Easy to use and streak free and comes with a couple cloths that are perfect
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Reviewed in the United States on March 1, 2026
★★★★★ 5
Smells good. Works good. Comes with microfiber towels..
Size: 16 Fl Oz (Pack of 1)
Smells good. Seems to work well and came with three big microfiber towels that are good quality. I would say it’s a good value.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 27, 2025
★★★★★ 4
Nice product. High quality microfiber to go with it.
Size: 16 Fl Oz (Pack of 1)
This product is a nice value for the price. It appears to be a high quality product. As someone just using it recreationally to clean my car every now and then, it seems that it protects very well. It leaves the interior of my car smelling alright and with a nice glossy shine. There is a decent amount in the bottle and its easy to spray on. If you are just using it to wipe dust off the dashboard or something like that, i'm quite sure that the dust will return not too long after you use it. It seems that it protects more for drying out and stains. The microfiber cloths it comes with feel high quality!
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Reviewed in the United States on September 8, 2025