What is a 361 big Block ?

1958 Dodge D500 performance package had a 361 four barrel, 305 hp. D500-1 had dual four barrels, 320 hp. 1958 DeSoto Adventurer also had a dual quad 361, rated at 345 hp (I think exactly the same motor as Dodge D500-1). 58 Plymouth top motor was a 310 hp dual quad 350 big block, which looks just like a 361-383.

361 four barrel was the standard motor in 59 Dodge Custom Royals, optional in other Dodge models, and biggest optional motor in 59 Plymouths. Dodge D500 that year was 383 four barrel, 325 hp. D500-1 was 383 with dual quads, 345 hp.

There were a few ram-inducted dual four barrel 361's in 60 and maybe 61. Ram-inducted 383's were better known and more common.

Last year (I think) for a performance 361 was 62. It was basically the same 305 hp single four barrel 361 of prior years, except it did not have the extended crank flange of those years. After 62, I think all 361's were two barrel motors.

361 looks just like a 383, and, similarly equipped, runs pretty much the same except for a small loss in power from 22 fewer cubes.

My contribution to an old thread. :soapbox: