Not sure what a "high angle block" is, but the V8 Buick was a normal 90 degree design. The valves
were all in a line, apparently that gave it the "nail head" (valves like a row of nail) monicker.
Worked fine for us. The 50s were simpler times, and cheap gas meant that fuel economy wasn't
high on the list. Lots of torque, smooth driving was what was wanted, and delivered. I suspect
that for hotrodders looking for max power, the straight row of valves wasn't the best, so things
moved on. By even 1959 or so HP was the name of the game, at least to a degree and the
Hemi, Wedge and 409 and such were coming into their own.
That middle carb normal, end carbs secondaries is what the Edelbrock manifold for my brother's
flathead Ford had. Bigger carb in the middle, too. Linkage only opened the two end carbs at the
last part of the throw.
I guess the transmission idea was similar to a CVT, since apparently they only used low gear, manually selected,
not normally used, for steep hills or descending a grade to get extra engine braking. I guess it really
was pretty much a CVT using the variable torque converters to deliver smooth flow of power, and a very
high torque engine to help.
You can see the "J-2" on the valve cover in that picture of the 371 Old engine that Rick used to have.
Bill