SKU: 28703303401

Hays Twister 3/4 Race Torque Converter, Ford C4 Case-Filled - 97-2D28Q

Sale price$274.93 Regular price$305.48
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Description

Hays Twister 3/4 Race Torque Converter, Ford C4 Case-Filled - 97-2D28QOverview: Hays Performance Drivetrain is proud to announce Twister 3 4 Race Performance Torque Converters. These NEW torque converters are a perfect addition to Hays product line of performance flexplates, clutches, and flywheels. The 3 4 Race torque converter is the first series being brought to market and is intended for street strip combinations, with various RPM stall speed offerings to accommodate any mixture of modifications including higher

Overview:

Hays Performance Drivetrain is proud to announce Twister 3/4 Race Performance Torque Converters. These NEW torque converters are a perfect addition to Hays product line of performance flexplates, clutches, and flywheels. The 3/4 Race torque converter is the first series being brought to market and is intended for street/strip combinations, 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. The name 3/4 Race perfectly describes a torque converter suited for an application just shy of a Full Race version. We do plan to offer Full Race torque converters in the near future. Good names never go away, and neither should good terms! Hays Twister 3/4 Race Torque Converters!

Features:

  • 3/4 Race series converters are built, tested, and proven to support up to 650 HP
  • 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 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.
  • 3/4 Race series converters are offered in several different stall speeds for GM, Ford, and Chrysler 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 Mercury Cougar 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 Ford F-250 351/5.8L V8
1977 Ford F-250 300/4.9L l6
1977 Lincoln Versailles 351/5.8L V8
1977 - 1979 Ford Thunderbird 351/5.8L V8
1977 - 1979 Ford Ranchero 351/5.8L V8
1978 Ford F-150 351/5.8L V8
1978 Ford F-150 300/4.9L l6
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 Mercury Cougar 400/6.6L V8
1977 - 1981 Mercury Cougar 302/5.0L V8
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 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
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
1978 Ford F-150 400/6.6L V8
1978 Ford F-150 302/5.0L V8
1978 Ford F-150 460/7.5L V8
1978 Ford F-100 400/6.6L V8
1978 - 1981 Ford F-100 302/5.0L V8
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
1978 - 1979 Ford Fairmont 302/5.0L V8
1978 - 1981 Ford Fairmont 200/3.3L l6
1978 - 1981 Ford Fairmont 140/2.3L l4
1980 - 1981 Mercury Zephyr 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
1980 - 1981 Mercury Cougar 255/4.2L V8
1980 - 1981 Mercury Cougar 200/3.3L l6
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
1980 - 1981 Ford Granada 255/4.2L V8
1980 - 1981 Ford Fairmont 255/4.2L V8
1981 Mercury Cougar 140/2.3L l4
1981 Ford Granada 140/2.3L l4
1981 Ford F-100 255/4.2L V8

Specs:

Anti-Balloon Plate No
Balanced Yes
Bolt Circle 10-1/2""
Brand Hays
Crank Pilot Diameter 1.375""
Diameter 10""
Emission Code 5
Input Spline 24
Lock Up/Overdrive No
Product Type Automatic Transmission Torque Converter
Series 3/4 Race
Stall 2800-3200
Transmission C4 Case-Filled
Use with Power Adder No
Use with Trans-Brake No
Warning California Proposition 65
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 28703303401

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4.3 ★★★★★
Based on 22 reviews
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Product Reviews
M
Verified Purchase
M. Del
Grantham, US
★★★★★ 5
Good stuff
Size: 50 sqft, Size: 50 sqft
Good stuff. I did a lot of work on my 91 Toyota Land Cruiser 3FE. I did the inside and outside doors, as well as the under-hood area, with some extra work. I like this stuff. It sticks down good but you have to clean your surface so there's a good grip. I think these are going to do well for noise cancellation. The deadening material does well with absorbing vibrations too. But the install roller tools it will come in handy. Trust me trying to do it by hand is not worth it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026
C
Verified Purchase
Charlie J
Louisville, US
★★★★★ 4
Good quality
Size: 10 sqft
I wish it was a little better but it definitely works great and look good for how cheap it is
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 23, 2026
R
Verified Purchase
R. Selberg
Omaha, US
★★★★★ 5
Works well
Size: 10 sqft
Worked great at a budget price. I used it to damp a fiberglass loudspeaker horn. Easy to work with too.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
D
Verified Purchase
Devan
Chelsea, US
★★★★★ 5
Good material but bites back
Size: 20 sqft
Very good product for my rear trunk and backseat on my mustang. I would recommend some type of gloves due to the foil itself when placing down will cut up your hands and fingers. Overall good product for its price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
M
Verified Purchase
Mike
Natrona Heights, US
★★★★★ 5
Great sound mat for the price!
Style: 50 mil 50 SqFt, Style: 50 mil 50 SqFt
This is a good product. Many people go with KILMAT because of the value to price point. I did as well. When you clean the surface (in my case it was all painted metal) this stuff sticks very well. I do recommend you use a seam roller of some type, I used Lumiteco 3 piece roller set. This will help with adhesion and mostly flatten the overlapped edges. It also helps you see where you have rolled as it leaves little grooves. The difference when we had no sound mats and after was very impressive. We haven't finished our install yet and it is quieter than when we had an interior in the van. There are thicker mats available in other brands, but this will work great for our van build, but this helps keep the weight down. It is quality material, just be careful when you are removing the backing, the edge of the foil face can cut you. I suggest you layout where you are installing the mat and cut to fit. From what I have read, you don't need to cover every inch in the vehicle, just spot install for a big difference. I chose to cover most surfaces to help keep sound out when we are sleeping in the van. We haven't finished putting the van yet, but we have driven it around and been very satisfied with this product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 3, 2025

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