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Description
Hays Twister Full Race Torque Converter, Ford C4 - 97-2E28FOverview: Hays Twister Full Race Torque Converters feature a custom designed anti balloon plate to stop any converter ballooning and swelling in racing situations. These torque converters are designed for use with a trans brake and great for power adders such as nitrous, superchargers, and turbos. They are available with various RPM stall speed offerings to accommodate any mixture of modifications including higher compression ratios, aftermarket
Overview:
Hays Twister Full Race Torque Converters feature a custom designed anti-balloon plate to stop any converter ballooning and swelling in racing situations. These torque converters are designed for use with a trans-brake and great for power adders such as nitrous, superchargers, and turbos. They are available with various RPM stall speed offerings to accommodate any mixture of modifications including higher compression ratios, aftermarket camshafts, aftermarket cylinder heads, lower gear ratios, and vehicle weight loss.
Features:
- All Full Race series converters are built, tested, and proven to support up to 1,000 horsepower
- Features a custom anti-balloon plate designed to stop potential torque converter ballooning
- Designed to handle the extreme shock and abuse of trans-brakes, nitrous oxide, superchargers, and turbochargers
- State of the art Spray Welding process is used in select areas. Spray Welding provides clean, strong and consistent fusion while also increasing strength through hardening from higher process temperature
- Each converter is hand-built and inspected in every step of assembly to ensure top of the line quality
- All Hays torque converters are internally welded compared to brazing. Testing has shown welding provides longer converter life while also enhancing consistency
- Heavy duty Torrington bearings are used for greater strength and durability
- Stators are chosen with high flow vents and channels to promote cooling in heat producing higher horsepower applications
- Increased horsepower and acceleration due to a weight saving, one application design. Almost all Hays converters are built for one application to reduce weight compared to a multi-bolt pattern converter.
- Full Race series torque converters are offered in several different stall speeds for popular automatic transmissions
- Industry leading Tech Support Team is available to provide assistance with stall speed selection
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| 1977 | Mercury | Monarch | 351/5.8L V8 | |
| 1977 - 1979 | Ford | LTD II | 351/5.8L V8 | |
| 1977 - 1980 | Ford | LTD | 351/5.8L V8 | |
| 1977 | Ford | Granada | 351/5.8L V8 | |
| 1977 | Ford | F-350 | 351/5.8L V8 | |
| 1977 | Ford | F-350 | 300/4.9L l6 | |
| 1977 - 1979 | Mercury | Cougar | 351/5.8L V8 | |
| 1977 | Lincoln | Versailles | 351/5.8L V8 | |
| 1977 - 1979 | Ford | Thunderbird | 351/5.8L V8 | |
| 1977 - 1979 | Ford | Ranchero | 351/5.8L V8 | |
| 1977 | Ford | F-250 | 351/5.8L V8 | |
| 1977 | Ford | F-250 | 300/4.9L l6 | |
| 1978 | Ford | F-150 | 300/4.9L l6 | |
| 1978 | Ford | F-150 | 351/5.8L V8 | |
| 1978 | Ford | F-100 | 351/5.8L V8 | |
| 1978 - 1981 | Ford | F-100 | 300/4.9L l6 | |
| 1980 | Mercury | Marquis | 351/5.8L V8 | |
| 1980 | Mercury | Grand Marquis | 351/5.8L V8 | |
| 1977 - 1980 | Mercury | Monarch | 302/5.0L V8 | |
| 1977 - 1980 | Mercury | Monarch | 250/4.1L l6 | |
| 1977 | Mercury | Monarch | 200/3.3L l6 | |
| 1977 - 1978 | Ford | LTD II | 400/6.6L V8 | |
| 1977 - 1979 | Ford | LTD II | 302/5.0L V8 | |
| 1977 - 1978 | Ford | LTD | 460/7.5L V8 | |
| 1977 - 1978 | Ford | LTD | 400/6.6L V8 | |
| 1977 - 1980 | Ford | LTD | 302/5.0L V8 | |
| 1977 - 1980 | Ford | Granada | 302/5.0L V8 | |
| 1977 - 1980 | Ford | Granada | 250/4.1L l6 | |
| 1977 - 1981 | Ford | Granada | 200/3.3L l6 | |
| 1977 | Ford | F-350 | 460/7.5L V8 | |
| 1977 | Ford | F-350 | 400/6.6L V8 | |
| 1977 | Ford | F-350 | 302/5.0L V8 | |
| 1977 - 1978 | Mercury | Cougar | 400/6.6L V8 | |
| 1977 - 1981 | Mercury | Cougar | 302/5.0L V8 | |
| 1977 | Mercury | Comet | 302/5.0L V8 | |
| 1977 | Mercury | Comet | 250/4.1L l6 | |
| 1977 | Mercury | Comet | 200/3.3L l6 | |
| 1977 - 1979 | Mercury | Capri | 171/2.8L V6 | |
| 1977 - 1981 | Mercury | Capri | 140/2.3L l4 | |
| 1977 - 1979 | Mercury | Bobcat | 171/2.8L V6 | |
| 1977 - 1980 | Mercury | Bobcat | 140/2.3L l4 | |
| 1977 - 1980 | Lincoln | Versailles | 302/5.0L V8 | |
| 1977 - 1978 | Ford | Thunderbird | 400/6.6L V8 | |
| 1977 - 1981 | Ford | Thunderbird | 302/5.0L V8 | |
| 1977 - 1978 | Ford | Ranchero | 400/6.6L V8 | |
| 1977 - 1979 | Ford | Ranchero | 302/5.0L V8 | |
| 1977 | Ford | Ranchero | 460/7.5L V8 | |
| 1977 - 1979 | Ford | Pinto | 171/2.8L V6 | |
| 1977 - 1980 | Ford | Pinto | 140/2.3L l4 | |
| 1977 - 1978 | Ford | Mustang II | 302/5.0L V8 | |
| 1977 - 1978 | Ford | Mustang II | 171/2.8L V6 | |
| 1977 - 1978 | Ford | Mustang II | 140/2.3L l4 | |
| 1977 | Ford | Maverick | 302/5.0L V8 | |
| 1977 | Ford | Maverick | 250/4.1L l6 | |
| 1977 | Ford | Maverick | 200/3.3L l6 | |
| 1977 | Ford | F-250 | 460/7.5L V8 | |
| 1977 | Ford | F-250 | 400/6.6L V8 | |
| 1977 | Ford | F-250 | 302/5.0L V8 | |
| 1978 - 1979 | Mercury | Zephyr | 302/5.0L V8 | |
| 1978 - 1981 | Mercury | Zephyr | 200/3.3L l6 | |
| 1978 - 1981 | Mercury | Zephyr | 140/2.3L l4 | |
| 1978 | Ford | F-150 | 460/7.5L V8 | |
| 1978 | Ford | F-150 | 400/6.6L V8 | |
| 1978 | Ford | F-150 | 302/5.0L V8 | |
| 1978 | Ford | F-100 | 400/6.6L V8 | |
| 1978 - 1981 | Ford | F-100 | 302/5.0L V8 | |
| 1978 - 1979 | Ford | Fairmont | 302/5.0L V8 | |
| 1978 - 1981 | Ford | Fairmont | 200/3.3L l6 | |
| 1978 - 1981 | Ford | Fairmont | 140/2.3L l4 | |
| 1979 | Mercury | Capri | 302/5.0L V8 | |
| 1979 - 1981 | Mercury | Capri | 200/3.3L l6 | |
| 1979 | Ford | Mustang | 302/5.0L V8 | |
| 1979 - 1981 | Ford | Mustang | 200/3.3L l6 | |
| 1979 | Ford | Mustang | 171/2.8L V6 | |
| 1979 - 1981 | Ford | Mustang | 140/2.3L l4 | |
| 1980 - 1981 | Mercury | Zephyr | 255/4.2L V8 | |
| 1980 - 1981 | Ford | Granada | 255/4.2L V8 | |
| 1980 - 1981 | Ford | Fairmont | 255/4.2L V8 | |
| 1980 - 1981 | Mercury | Cougar | 255/4.2L V8 | |
| 1980 - 1981 | Mercury | Cougar | 200/3.3L l6 | |
| 1981 | Mercury | Cougar | 140/2.3L l4 | |
| 1980 - 1981 | Mercury | Capri | 255/4.2L V8 | |
| 1980 - 1981 | Ford | Thunderbird | 255/4.2L V8 | |
| 1980 - 1981 | Ford | Thunderbird | 200/3.3L l6 | |
| 1980 - 1981 | Ford | Mustang | 255/4.2L V8 | |
| 1981 | Ford | Granada | 140/2.3L l4 | |
| 1981 | Ford | F-100 | 255/4.2L V8 | |
| 1980 | Mercury | Monarch | 255/4.2L V8 | |
| 1980 | Mercury | Marquis | 302/5.0L V8 | |
| 1980 | Mercury | Grand Marquis | 302/5.0L V8 |
Specs:
| Anti-Balloon Plate | Yes |
|---|---|
| Balanced | Yes |
| Bolt Circle | 10-1/2" |
| Brand | Hays |
| Crank Pilot Diameter | 1.375" |
| Diameter | 10" |
| Emission Code | 5 |
| Input Spline | 26 |
| Lock Up/Overdrive | No |
| Product Type | Automatic Transmission Torque Converter |
| Series | Full Race |
| Stall | 2800-3200 |
| Transmission | C4 Case-Filled |
| Use with Power Adder | Yes |
| Use with Trans-Brake | Yes |
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.7 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 5
So sweet
Format: Kindle
It’s so unexpectedly sweet that it sneaks up on you. Each character is so unique and charming. I love the openness and honesty among their pack. It really blows me away how wonderful this omegaverse trope plays out.
I received a free copy of this book and am voluntarily leaving a review.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 21, 2026
★★★★★ 2
Needs editing
Format: Kindle
Cute storyline and promising characters, but the lack of editing is painful to read. I would love to read an edited version.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 10, 2025
★★★★★ 5
Fantastic writing and non-stop action
Format: Kindle
This is a promising, fantastic beginning to what will be a 4-book series. Some readers may be content to read only the first 2 books, but I think you'll find that the story is so good that you'll want to keep reading books 3 and 4.
Book 1 is about omega Elvana's introduction to the "Starling" brothers and their search for another missing person, Kelly. It's a bit of a rocky start, with deception and betrayal a key element. Hardly an auspicious beginning. Each member has their own path and purpose in the pack. Their interactions and the resulting narrative are so well-written that I found it difficult to put down.
There is a cliffhanger that will have you reaching for book 2 as you finish, so make sure you have it on hand.
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Reviewed in the United States on September 27, 2023
★★★★★ 4
Fun read
Format: Kindle
I'm not really into mafia books but I love Roxy Collin's other series so I decided to give it a try. It had the same great romance, spice, swoon-worthy characters and exciting plot that are her signature. Arben was my favorite, although it was a bit sudden how quickly he changed from ignoring her to wanting to be pack. There were almost too many twists/layers of lies to keep track of but I'm looking forward to reading the other books.
The only thing that detracted from the story for me was the need for a bit more proofreading. It was mentioned that Kelly is a female and male at different points, leading me to think she changed her mind at some point about the character's gender but didn't go back and edit it to align in all places. Like another reviewer pointed out, step siblings are different than half siblings. They are incorrectly referred to as step siblings because they (allegedly) share the same biological dad. There are a few other typos as well but those aren't a big deal.
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Reviewed in the United States on March 18, 2025
★★★★★ 5
Stepbrothers, Secrets, and Sizzling Heat
Format: Kindle
Twisted Lies by Roxy Collins is a wild ride through family secrets, amnesia, and a steamy stepbrother romance. When Kelly discovers her life is built on lies, she ends up tangled with three alpha stepbrothers and an assassin who once helped her through a heat.
The tension? Off the charts!
The heat is real, and the complications are messy in the best way. Full of twists, secrets, and fated mates? You'll be hooked from page one!
Love omegaverse drama with a dash of taboo? This one's for you!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 10, 2024