Circle D – 4L80E Pro Series Converter
$1,199.00
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Three diameters are available for the 4L80 Pro Series Single Disk.
245mm is good for lighter cars and big NA setups.
258mm is great for heavy cars and smaller trucks, bigger power setups, or more of a street build.
265mm is for a really big power setup or large heavy trucks.
(Most converters are built-to-order; current lead time is around 3-4 weeks)
Description
Three diameters are available for the 4L80 Pro Series Single Disk.
245mm is good for lighter cars and big NA setups.
258mm is great for heavy cars and smaller trucks, bigger power setups, or more of a street build.
265mm is for a really big power setup or large heavy trucks.
Pro Series Billet Torque Converter
- Furnace Brazed
- Hand TIG Welded
- Torrington Bearings
- Billet Front and Billet Piston
- Deep Groove Ball Bearing Design for Longer Clutch Life
- Flanged Impeller Hub for Anti-Flex Durability
- Hand Assembled to Exacting Tolerances
Questions & Answers (17)
Customer questions & answers
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I have a 02 Chevy Silverado 1500hd with a ATK HP110 535hp engine. It has a custom Performance grind cam, 3.73 gears, like 5800lbs or so on weight.I still want to be able to use my truck like I did before ie being able to tow but also run when I want to have fun. What do you recommend?
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Q I have a 02 Chevy Silverado 1500hd with a ATK HP110 535hp engine. It has a custom Performance gri...... Read more answer nowAsked by on August 26, 2026 7:11 amA I would recommend reaching out to Circle D directly so they can get you set up with the appropriate converter
72 el camino 383 500hp 480 ft large cam 3200 and up 3.73 gears i hot rod it around smoking the tires mainly looking for suggestions and help with selecting
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Q 72 el camino 383 500hp 480 ft large cam 3200 and up 3.73 gears i hot rod it around smoking the ti...... Read more answer nowAsked by on March 30, 2026 11:59 amA I would reach out to Circle D directly and see what they would recommend
I have a 2003 Chevy Silverado 1500 with a 4l60 but it slipping bad and planning to put a 4l80. I’m aslo planning to get the stage 4 cam, what’s the best stall converter I can get such as rebuilding my original transmission(4l60) or adding it to the 4l80 I’m getting
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Q I have a 2003 Chevy Silverado 1500 with a 4l60 but it slipping bad and planning to put a 4l80. I’...... Read more answer nowAsked by on January 27, 2026 11:36 amA 4000+ stall speed for a stage 4
Ls 408 stroker N/A big cam 4L80e trans 373 gear best stall?
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Q Ls 408 stroker N/A big cam 4L80e trans 373 gear best stall? answer nowAsked by on September 15, 2025 9:02 pmA We'd need more information about the application but I would recommend reaching out to Circle D and getting their input
2000 tahoe with lq9 and 862 heads for higher compression. Truck norris cam, long tubes, 4l80, 33" tires and 4.88 gears. Im thinking 265mm converter with 3000 stall? Does that sound about right?
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Q 2000 tahoe with lq9 and 862 heads for higher compression. Truck norris cam, long tubes, 4l80, 33"...... Read more answer nowAsked by on September 8, 2025 9:00 amA That should work but I would consult with Circle D just to be certain
i AM LOOKING FOR A 4000 STALL FOR MY 4L80 E. LOCK UP CONVERTER. THE CAR IS A 1981 MONTECARLO, 406 ALUMINUM SMALL BLOCK CHEVY, 9,6 TO ONE COMPRESSION , 220 AFR HEADS, F2 PROCHARGER ABOUT ABOUT 15 PSI OF BOOST. CAM: 722 SOLID LIFT AND 272 AT 50 THOUSANDS DURATION. 373 REAR GEAR. ( NOT SURE IF I AM GOING TO 342 OR 410 GEAR. DOES THE 4000 STALL SOUND ABOUT RIGHT TO YOU. RECOMMEND A TRANS CONTROLLER ALSO PLEASE.
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Q i AM LOOKING FOR A 4000 STALL FOR MY 4L80 E. LOCK UP CONVERTER. THE CAR IS A 1981 MONTECARLO, 406...... Read more answer nowAsked by on July 1, 2025 4:07 pmA I would suggest contacting Circle D directly for your combo and see what they recommend and not familiar with the aftermarket 4l80 controllers enough to be able to give you recommendation unfortunately
I have a sloppy cam in a 5.3 Extended cab 2006 GMC with 455 rear
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Q I have a sloppy cam in a 5.3 Extended cab 2006 GMC with 455 rear answer nowAsked by on April 15, 2025 4:32 pmA 3200
I have a 2008 chevy suburban 2500 ls with a truck norris cam. Wanting to tow with it but still have fun when I don't have the boat. What stall should I get? 2500?
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Q I have a 2008 chevy suburban 2500 ls with a truck norris cam. Wanting to tow with it but still ha...... Read more answer nowAsked by on April 8, 2025 10:06 pmA I would consult with circle d but likely your best option will be the 265mm diameter and 2500 stall
Witch stall should I get for a Pontiac g8 4l80 with a 6.0 engine and a 3.27 differential / full build engine
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Q Witch stall should I get for a Pontiac g8 4l80 with a 6.0 engine and a 3.27 differential / full b...... Read more answer nowAsked by on August 30, 2024 12:59 pmA That's relative to your build and cam selection, email us at support@gwatneyperformance.com
I have a 07 Chevy suburban LT swap it for a 6.0L lightly ported heads 11.1 compression BTR Truck Norris cam power is 507 @ 6600 Torque 510 @ 3620 at flywheel my question is do I need the stall lower or get what I need the truck is heavy like around 6000lb don’t want stall to be to high it’s a daily.
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Q I have a 07 Chevy suburban LT swap it for a 6.0L lightly ported heads 11.1 compression BTR Truck ...... Read more answer nowAsked by on April 5, 2024 4:09 amA Likely the 265 diameter and 2500 stall speed will be your best option, best to consult with circle d directly to ensure you get the proper converter for your application
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