196 intake plate gasket

Other than the 172.6/184/196, I think all the previous Nash sixes had seven main bearings. I wrote an extensive article on the Nash/Rambler/AMC sixes from the first in 1916 through the 4.0L some years ago.

Almost forgot I had all the PDFs on my computer! AIM #27, 2003. All but that first six, built from 1916-1925, had six mains. That first one only had THREE!!! Compression was only 3.80:1, and it only put out 46-60 hp, depending on year. With only three mains 60 hp was probably about the max. RPM was a low 2200-2400 for max power. Sizes were 207.4 and 248.9. I didn't have any info in the article on crank flanges, Tom is probably right about the four and six bolt configurations. I do have some old Nash manuals, don't know if they show the flanges or not. If someone is really interested I'll look through them.

I never worried about sequence when taking a head off. I don't think the short time under uneven stress, especially with the engine not running, makes a difference. Never has, and I've had a few 196 OHV heads off and on.