Performance Torque Converters

Designed especially for classes where a functional torque converter is required. Built to maximize efficiency and reduce slippage, these TCI® converters can reduce lap times by over a tenth of a second when compared to a stock converter. Other benefits include rotating weight reduction of several pounds (all removed from outside diameter, thus improving engine braking in corners) and reduced transmission operating temperatures.

Part No.	Special Notes	Trans	Size	Bolt Pattern	Flash Stall	Converter Weight Lbs.	Recommended Engine size & rpm range
2409201	Good for heavier cars, low stall, good throttle response	TH350/400	11"	Dual	2000-2300	29	327 - 400 cid 2500 - 6000 rpm range
2410211	Good for very heavy cars, excellent throttle response	TH350/400	10"	Dual	2300-2600	26	350 & larger car weight 3000 lbs & up
241050	Non-functional/direct drive	TH350/400	10"	Small	N/A	17	Where rules do not require a functioning converter
2411201	Good for heavier cars, low stall, good throttle response	TH350/400	11"	Small	2000-2300	29	327 - 400 cid 2500 - 6000 rpm range
2421201	Good for lighter cars, excellent throttle response	TH350/400	10"	Small	2300-2600	26	350 & larger car weight to 3000lbs
7410201	Good for lighter cars, excellent throttle response	Powerglide	10"	Small	2300-2600	26	350 & larger car weight to 3000lbs
741050	Non-functional/direct drive	Powerglide	10"	Small	N/A	17	Where rules do not require a functioning converter
741115	Good for heavier cars, low stall, good throttle response	Powerglide	11"	Small	2000-2300	29	327 - 400 cid 2500 6000 rpm range
741125	Good for very heavy cars. excellent throttle response	Powerglide	11"	Small	1800-2100	29	350 & larger car weight 3000 lbs & up
242125	Good for very heavy cars, excellent throttle response	TH350/400	10"	Small	1800-2000	24	350 & larger car weight 3000 lbs & up.  Use part# 242126 for 1/4" midplate applications
242130	Good for very heavy cars, excellent throttle response	TH350/400	10"	Small	1800-2000	24	350 & larger Asphalt car weight 3000 lbs & up. Use part# 242131 for 1/4" midplate applications
241150	Non-functional/direct drive	TH350/400	11"	Small	N/A	17	Where rules do not require a functioning converter.  Use part# 241151for ¼” midplate applications.
451920	Good For heavy cars, low stall and excellent throttle response	C-4 26 Spline 11 7/16 BP	10"	11  7/16	2000	24	302-351 car weight 2600-up.  Excellent for Truck Series applications
741030	Good for heavier cars, low stall, good throttle response	Powerglide	10"	Small	1800-2000	24	350 & larger Asphalt car     weight 3000 lbs & up.  Use part# 741031 for 1/4" midplate applications
741150	Non-functional/direct drive	Powerglide	11"	Small	N/A	17	Where rules do not require a functioning converter.  Use part# 741151 for ¼” midplate applications.
741025	Delivers lower stall speed for quicker acceleration	Powerglide	10"	Small	N/A	N/A	350 & larger car weight 3000 lbs & up

¹With anti-ballooning plate

TH350 10" FastLap Torque Converter™ for 1⁄4" Motorplate
Automatic transmissions deliver amazing on-track performance when equipped with the properly tuned torque converter. The new TCI® 10" FastLap Torque Converter™ is the ultimate converter solution for both pavement and dirt circle track racers. This race engineered torque converter utilizes all the latest in tuning technology to provide maximum acceleration off the corners and increased engine braking going into the corners. Now available in a 10-inch diameter for decreased rotating weight, the 10" FastLap Torque Converter™ offers a signifi cant performance upgrade at a reasonable price and with minimal installation effort. Now available for GM TH350 and Powerglide powered race vehicles.

Powerglide 10" FastLap Torque Converter™ for 1/4" Motorplate
Automatic transmissions can deliver amazing circle track racing performance if equipped with the properly tuned torque converters. The new TCI® 10-Inch FastLap Torque Converter™ for GM Powerglide Transmissions provides the best of all benefits, including great acceleration when you need it. Utilizing an extremely low stall speed, this torque converter also provides more engine braking going into the corners and faster acceleration coming out of the turns. Now available in a 10-inch diameter for decreased rotating mass, the FastLap Powerglide Torque Converter is the ideal solution for racers looking for better performance at a reasonable price.

Combining 35+ years of torque converter technology and on-track testing, the engineers at TCI® selected the optimum stall speed for dirt and pavement circle track competition. This reduced stall speed torque converter incorporates heavy-duty oversized bearings for increased load capacity and less drag to deliver a product that is far superior to stock and other aftermarket converters currently available. Like every TCI® torque converter, these units feature the exclusive HDT Coating™ for improved temperature transfer and are triple tested to ensure durability and on-track performance.