heater water plumbing

[Tom Jennings <tomj@xxxxxxx>]

So I bought a 1983 "TSM" for my motor (258), but it's practically
worthless.  A flimsy thing with the bare facts and no useful
photos! What crap!

Can anyone give me hints on how the water gets plumbed? Is the
heater core full-flow? How does the intake manifold get plumbed?

My plan is to find some "Y"'s and plumb the heater and intake in
parallel. The 1970 heater has the cable-driven hot water valve.
Did 83 use a hot water valve or was the core full-flow?

I use "Y"s in my LP car, since the water-heated LP converter needs
water heating. I figured I'd do the same here.