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Author Topic: 400 trans  (Read 558 times)

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Offline Jim

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400 trans
« on: January 03, 2022, 12:59:16 PM »
Hi ,just got a good running st400 (20years ago) so who makes the best overhaul kit  any real problems to look for /up grades? Jim
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66 lesabre,68 Electra, 42special streetrod, multiple, chevs, 69 chevelle ss,67 skylark conv, 65 skylark ht,68 el Camino  and more , 65 skylarkgs

Offline GS66

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Re: 400 trans
« Reply #1 on: January 04, 2022, 10:31:10 AM »
We have one in one of the 66 GS cars. Works great, only upgrade I did was a B & M shift improver kit so it chirps the tires when shifting to second manually under heavy acceleration. Finned aluminum pan will aid cooling.
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Jim
North Mankato, MN

65 Gran Sport HT auto
66 Gran Sport Conv. 4 speed
66 Gran Sport Conv auto
66 Gran Sport Post auto
66 Gran Sport HT auto

Offline Jim

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Re: 400 trans
« Reply #2 on: January 04, 2022, 03:30:23 PM »
Hi ,it's even sitting so long I at least want check it over  all new seals anyway,clutch pack.  Jim
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66 lesabre,68 Electra, 42special streetrod, multiple, chevs, 69 chevelle ss,67 skylark conv, 65 skylark ht,68 el Camino  and more , 65 skylarkgs

Offline gssizzler

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Re: 400 trans
« Reply #3 on: January 04, 2022, 07:32:21 PM »
Oregon Performance Transmission, Cars,and Fatsco are good sources I would check current reviews ! As far as tech and questions I had the easiest time with Fatsco! Got parts for both st300 and th400 from these vendors! If you have a trans shop in town usually they can recommend vendors also! I would also post this ? On V8Buick site also!
« Last Edit: January 04, 2022, 07:35:38 PM by gssizzler »
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Offline Jim

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Re: 400 trans
« Reply #4 on: January 17, 2022, 11:21:51 AM »
Thanks ,now I can move on to the puffing  smoke when starting after its warm.Jim
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66 lesabre,68 Electra, 42special streetrod, multiple, chevs, 69 chevelle ss,67 skylark conv, 65 skylark ht,68 el Camino  and more , 65 skylarkgs
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