A904 to 360

fstfish66 said

learned some thing here my self,, i never knew there was an adapter for the early crank register to newer torque converter button,,,

i have a 1987, 904//999 in my street rod and the motor is a 1954 dodge 241 ci red ram hemi,,and the converter fits the crank,,weird....\\so it is the early 64 crank or the 360 thats different??

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The only cranks with the small diameter converter hole are the '60-67 slant 6 and the '64-7 273's. If you pull those early engines out and replace it with a '68-up version or a different size early engine (ie. 318) you'll need the bushing to take up the space between the converter hub and the edge of the crank hole or the converter won't be centered. (unless you're really lucky!) The result of not doing this is usually a broken flex plate and/or engine vibration.