I have a monte Carlo with a 350 in it I need a starter that work and don't grind on flywheel I have already tried part# dl35105 what kind of starter will I need
If the engine has a 153 tooth flywheel the starter has 2 bolts in a straight line.
If the engine has the 168 tooth flywheel the stater has 2 bolts staggered.
Most blocks are drilled for both so that isn't helpful in determining which flywheel diameter is on the engine.
If you're having starter engagement problems and you know the starter on the engine is not the original then you need to drop the bottom cover and count teeth on the ring gear. That will take rotating the engine so bring a tool made for that purpose or a large screw driver to do it one tooth at a time without the tool. If you can measure the ring gear diameter the 14 inch will be the 168 tooth while the 12-3/4 will be the 153 tooth.
The other problem is engagement mesh depth, the starter pinion should fully engage length wise and should have .050 inch clearance of pinion tooth crown to ring gear tooth base when engaged.
The 1988 (Corvette 87) and older engines use the huge old starter motor, the newer engines use a mini starter, they interchange as long as you get the mount right for the ring gear diameter. The older big heavy motor uses a brace from the back side (brush end) of the motor to the block the new small motor does not.
Bogie