the problem with finding parts for a 392 hemi, is that chrysler only installed those engines in a limited number of larger/heavier later 1957-1959 or so, performance cars.
unlike the SBC which was available in millions of cars from 1955-1991
or the BBC from roughly 1965-1995
The
392 raised-deck engine released in 1957 had a 4.00 in (101.6 mm) bore and 3.906 in (99.21 mm) stroke. The deck height, at 10.87 in (276.1 mm), was 1⁄2 in (13 mm) taller than that of the previous blocks. Because its deck was taller, the heads were cast with wider intake ports so that earlier manifolds could be used with the new heads on the new taller block. For 1958, Chrysler offered the 392 in two configurations: 325 bhp (242 kW) with 9.25:1
compression and 345 bhp (257 kW) with 10:1 compression, both with a single four-barrel carburetor. A dual four-barrel version of the 392 available in the 1957-58 Chrysler 300C & 300D cars was rated at 375 bhp (280 kW); the 300D, and some marine and industrial engines, used a (now rare) adjustable rocker.
[5] An extremely rare option available on the 1958 300D was Bendix "Electrojector"
fuel injection, with which the 392 was rated at 390 bhp (291 kW). Due to reliability problems with the primitive onboard computer which controlled the injection system, however, 15 of the 16 300D cars built with the fuel injection option were recalled and retrofitted with carburetors.
[6]
The 392 engine was used in the following applications:
In the late 1950s and early 1960s,
drag racers found the 392 to be a formidable engine and continued to run them competitively into the 1970s. Usual color of the block was silver.
[7]
http://garage.grumpysperformance.co...ilding-the-early-hemi-my-favorite-engine.491/