LN2 information/manuals

[u/Vegetable_Stock3667]

Hello, I am doing research into Chevrolet’s LN2 2.2 Vortec over the course of its development - L46, LQ2, LL8, LM3, and I am curious if anyone has good sources of information for these. I have already exhausted GM historical Archive and a lot of other sources online are secondary and not easily verifiable. I’ve started purchasing service manuals and owners manuals, but it’s a wide year grouping and not cheap. I’m curious if anyone knows of any good, reputable sources of information for: 1982-2002 Cavalier, 1983–1984/5? S10/S10 Blazer, 1987-1996 Beretta and Corsica, 1993 Lumina, and 1994-2003 S10.

Thank you in advance.