1978 C3 L82 3 speed automatic
Safety Car
Joined: Dec 2012
Posts: 3,802
Likes: 1,712
From: Summerville SC
I think he's telling you to replace it with a 400. SO you want to get a replacement 350? Lots of people here will give you lots of arguments for using something different. Why do you want the same transmission? Nothing wrong with that but forum members might want to know, and that will make things easier for you when you get suggestions for a 400, a 200R4 or a 700R4. Or even a 4 speed. And welcome aboard. 
Thread Starter
3rd Gear
Joined: Jun 2024
Posts: 3
Likes: 0
I think he's telling you to replace it with a 400. SO you want to get a replacement 350? Lots of people here will give you lots of arguments for using something different. Why do you want the same transmission? Nothing wrong with that but forum members might want to know, and that will make things easier for you when you get suggestions for a 400, a 200R4 or a 700R4. Or even a 4 speed. And welcome aboard.
Le Mans Master
Joined: Aug 2017
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From: Cool Northern Michigan
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Race Director
Joined: Mar 2017
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From: Virginia
TKX (5-speed) or Tremec Magnum (6-speed)!
Kit are available from Silver Sport Transmission
https://www.shiftsst.com/
Kit are available from Silver Sport Transmission
https://www.shiftsst.com/
Burning Brakes
Joined: Jul 2017
Posts: 1,114
Likes: 149
From: Frisco TX
I had my 78 L82 Turbo 350 trans rebuilt in 2016. It had more than 100k on it. I had them add a shift kit. It runs flawlessly now. The rebuild is probably the least costly of all of the above choices.
Mine has 3:55 gears so it would be nice to have an overdrive but since I drive only about 1K per year it not worth it.
Mine has 3:55 gears so it would be nice to have an overdrive but since I drive only about 1K per year it not worth it.
Last edited by LenWoodruff; Jun 7, 2024 at 08:40 AM.
Le Mans Master
Joined: Oct 2010
Posts: 6,930
Likes: 845
From: melbourne florida
2023 C3 of the Year Finalist - Modified
Turbo 350 is a good transmission, a good performance type rebuild it will handle a good bit of power.and less parasitic power loss than the other automatics.
Good luck! 👍
Good luck! 👍
Le Mans Master
Joined: Aug 2006
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From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
Le Mans Master
Joined: Jan 2001
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Simoneitchevy
From your statements I would just get it rebuilt. Turbo 350s are wonderful trannies overall. If it was me I'd go to a 200-4R but that's neither here nor there from your stated preferences.
Pretty sure all the early C3 automatics were Turbo 400s.....
From your statements I would just get it rebuilt. Turbo 350s are wonderful trannies overall. If it was me I'd go to a 200-4R but that's neither here nor there from your stated preferences.
Pretty sure all the early C3 automatics were Turbo 400s.....