Originally Posted by tnsmith10
have you tested the starter off of the donor truck to verify that its even good?
have you tried the starter (the origional starter you had on the truck) that you took off your truck to confirm that its a flywheel problem and not a starter issue?
and lastly, have you pulled the starter drive into the start position to verify that the starter teeth are meshing properly with the flywheel? is there a gap?
This is good advice there is no difference in starters in an auto or manual trans.
The only difference you will see here , looking at the OEM parts is one starter is Staggered and the other is not all fit; Big/Small Block, GM 90 Degree V6 ; no mention of auto or standard/manual trans.