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Old 02-24-2011, 10:20 AM   #1
HDBOB
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Small Block to Big block

I am replacing my tired 350 in my 72 GMC with a correct 402 and t400 trans from a 72 cheyenne. I have the correct a/c brackets and alt, pwr st pump and reservoir. Can anyone tell me what else I will need to change ? Motor mounts ? Radiator/and or shroud?
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Old 02-24-2011, 11:43 AM   #2
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Re: Small Block to Big block

Lots of guys have done this - I would look through the build threads.
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Old 02-24-2011, 01:06 PM   #3
Classic Heartbeat
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Re: Small Block to Big block

You will need the engine frame mounts and motor mounts too. Wouldn't hurt to grab the 4 row radiator and all of it's parts. WES
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Old 02-24-2011, 01:14 PM   #4
leddzepp
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Re: Small Block to Big block

You will also need a different yoke if you are changing from a TH350 to a TH400.
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Old 02-24-2011, 06:40 PM   #5
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Re: Small Block to Big block

fan shroud also
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