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Hays Twister Full Race 4,200-4,500 Stall Torque Converter 97-1B42F Converters, Race, rpm Speed Range, 30-spline, 9.60 in. Diameter, 10.750 in. Bolt Circle, THM350, Chevy, Each

SKU: HAY97-1B42F

Torque Converters

Hays Twister Full Race 4,200-4,500 Stall Torque Converter 97-1B42F Converters, Race, rpm Speed Range, 30-spline, 9.60 in. Diameter, 10.750 in. Bolt Circle, THM350, Chevy, Each

SKU: HAY97-1B42F

Torque Converters
A$3,299.23
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
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Description

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're 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.

Additional product features:

* All Full Race Series converters are built, tested, and proven to support up to 1,000 hp
* 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.

Part Type

Torque Converters

Data: v4.2 - Upd: 2026-09-29 03:12:58

Specifications

Product Attributes - Brand
Hays
Product Attributes - Manufacturer's Part Number
97-1B42F
Product Attributes - Part Type
Torque Converters
Product Attributes - Product Line
Hays Twister Full Race Torque Converters
Product Attributes - UPC
090127038895
Product Attributes - Torque Converter Use
Race
Product Attributes - Stall Speed Rating RPM Range
4,200-4,500
Product Attributes - Torque Converter Bolt Circle (in.)
10.750 in.
Product Attributes - Input Spline Quantity
30
Product Attributes - Anti-Ballooning Plate
Yes
Product Attributes - Lockup Compatible
No
Product Attributes - Diameter (in.)
9.600 in.
Product Attributes - Crank Pilot Diameter (in.)
1.703
Product Attributes - Furnace-Brazed
No
Product Attributes - Balanced
Yes
Product Attributes - Mounting Hardware Included
No
Product Attributes - Torque Converter Stall Note
Actual stall speed may differ due to engine combination, gear selection, and vehicle weight.
Product Attributes - Remanufactured
No
Product Attributes - Quantity
Sold individually.
Product Attributes - Notes
The Full Race series converters are designed to be used with trans-brakes and power adders such as nitrous oxide, superchargers, or turbochargers.

Reference Information

Brand Name/s Hays
StreetFX SKU hay97-1B42F
SFX Item ID 5093366
Supplier Item Code 5093366
Manufacturer SKU 97-1B42F
Manufacturer UPC 90127038895
Alternative References 30-spline, THM350

Compatibility

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