Can late gen3 ( 70 to 72 ) upper big block mounts work for a Gen4 (73-77)? Are they the same? :dontknow:
I'd like to put my big block down in it's hole.

Go to the parts store and ask them to look both mounts up, if same part # for both, you're in like Flynn!

:nanawrench:

Can I use the uppers off a b-body? Impala ect.