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4.3 to sm465

Discussion in 'The Garage' started by 86chevybanshee, Jun 11, 2005.

  1. 86chevybanshee

    86chevybanshee 1/2 ton status

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    i got a 4.3 as a temp motor for my s10 till i get my small block built, but id like to still put the sm465 in the truck.

    my question is, can i use a flywheel and clutch from the 350 and put it on the 4.3 as long as it has the same number of teeth?
     
  2. newyorkin

    newyorkin 1 ton status

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    I think that flywheel is balanced differently for the two extra pistons. I might not know what I'm talking about, but that's what I'd figure...
     
  3. CyberSniper

    CyberSniper 1/2 ton status Premium Member

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    350 and 4.3 are internally balanced. You can swap flywheels as long as they physically bolt up.
     
  4. 86chevybanshee

    86chevybanshee 1/2 ton status

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    sweet

    thanks
     
  5. beater_k20

    beater_k20 Banned

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    1 piece 350s are not internally balanced. im not sure about 4.3s
     
  6. CyberSniper

    CyberSniper 1/2 ton status Premium Member

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    I forgot about that part. I'm pretty sure as long as it'll bolt up it'll work. The 1 piece rear seal 4.3Ls are externally balanced also. I know under certain applications (4x4 late 80s IFS pickup) a 4.3L flexplate can be used on a 350 for the same year (going by auto parts stores' books). So, anyway, I'm 99% sure as long as it'll bolt up it'll work.
     

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