What is the max IC DRAM for a 370C?

[jaspen-meyer]

The largest capacity ram listed in the HMM ( http://download.lenovo.com/ibmdl/pub/pc ... tpvol2.pdf ) is fru 66G0094, 16MB and 70 ns.

Which 32mb cards which work in this machine?

[fultontech]

Which 32mb cards which work in this machine?

Kinston had 32MB cards labeled with model numbers that included "750" and "360" in the names. The "360" was non-parity.
I don't know if there was a 370 specific card, but if anything was going to work, it would be the non-parity version.

[rkawakami]

I would stick with "low-density" versions of a 32MB module. That would mean that there must be at least two individual ICs on the board. I don't exactly know if anybody ever released a 32MB module using a single 32MB IC but it's better to be safe then sorry.