4.3 to sm465

[86chevybanshee]

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?

 

[newyorkin]

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...

 

[CyberSniper]

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

 

[86chevybanshee]

sweet

thanks

 

[beater_k20]

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

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

 

[CyberSniper]

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

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.