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#1
10-26-2025, 07:15 PM
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'68 th400 ct
I saw this on Facebook. I'm thinking that the '68 TH400 is pretty rare, or am I wrong? Anyway, I thought someone might be interested.
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Freddie 1969 Camaro RS/SS396 (427) 4 speed 
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#2
10-26-2025, 08:35 PM
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I have a CT from a '69 C10 I bought last spring. It is, actually a TH475 and is a unicorn that was only used for about 18 months in '68/early '69 and the only application I can find was in a truck. They continued for a number of years in motor homes.
It has a unique slip yoke size,output shaft and tailhousing, larger than TH350/Muncie but smaller than a TH400 and the yokes have been discontinued for many years. I did find a place online that can have one machined by special order, but it costs $600, just for the yoke...  I attempted to get online info on a tailhousing, output shaft swap to TH400 parts, but didn't get any solid answers. There are a few race transmission builders who like the case, as it is stronger, and make it a 2 speed, so there must be interchangeable parts for the case. I was going to contact our local trans builder about this, but decided, since the yoke is $600, and mine is worn, I'd rather have him build a 200-4r core I have here for the truck.
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Mitch 1970 Chevelle SS 1966 Chevelle SS 1967 Camaro ss/rs 1938 Business coupe, street rod 2000 FXSTS, original owner, 13k miles Last edited by Too Many Projects; 10-26-2025 at 08:38 PM.
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