how do i know if i have a 6bolt or 7 bolt with out motor tear-down

[dsmjunk]

just as the title says

 

[92AWDHX40]

I would look at the crankshaft if its still there 7 bolt, there you go, i saw a thread somewhere on the differences somewhere.

 

[JusMX141]

Do I have a 6bolt or 7bolt engine?

http://www.dsmtuners.com/forums/cylinder-head-short-block/222632-6-bolt-block-identification.html

http://www.dsmtuners.com/forums/bolt-tech/132485-1st-gen-6-bolt-vs-7-bolt-actual-differences.html