S/B vs B/B Motor Mount Fitment

[4woody]

I'm working out my engine and mounts for putting a 383 into my '38 Chrysler.

This question relates to the portion of the motor mounts where they bolt to the block:

Some of the Ebay ads I'm seeing claim that their block brackets will fit both big and small blocks. Are the mount bosses on big and small blocks really the same?

Tia.

 

[Jim Lusk]

They are not the same.........

 

[4woody]

Thanks for your reply.
I didn't think there was any interchange.

Do small blocks use a different 3-bolt pattern or ?