Turbo 350 to turbo 400

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Old September 17th, 2022, 12:20 PM
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Turbo 350 to turbo 400

I’ve got a 76 cutlass supreme and am switching transmissions soon. I bought a tsi build turbo 400 and was wondering what all I need to do to make it fit. I know the yoke is different and I might need to lengthen the drive shaft. Anything else I need to know? TIA

Last edited by 1976Olds; September 17th, 2022 at 01:12 PM.
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Old September 17th, 2022, 06:40 PM
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The yoke is different and you need to SHORTEN the driveshaft. Unlike on the earlier cars, the e-brake cable does not need to change when moving the crossmember.
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Old September 18th, 2022, 04:33 AM
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Also the t400 you bought needs to be for the BOP pattern- not Chevy.
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Old September 18th, 2022, 06:25 AM
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You will also need a kickdown switch
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Old September 18th, 2022, 12:01 PM
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I have a bracket for the kickdown switch if you need it, but I do not have the switch.
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