360 out of a 1977 RV

JBurch said
If the engine is untouched then the cam is the standard .410/.412 lift with 252/256 duration used in all 2bbl 360's.

You're close... That's the early cam from 71-74, in 75 they changed it - not much but very slightly.... He has the second one....

71-74 360 cam is:

252°/256° duration
.410"/.412" lift

Int op: 16° btc
Int cl: 56° abc
Ex op: 60° bbc
Ex cl: 16° atc

Overlap: 32°

In 75 it changed to:

252°/252° duration
.410"/.410" lift

Int op: 18° btc
Int cl: 54° abc
Ex op: 57° bbc
Ex cl: 15° atc

Overlap: 33°

Per the factory service manuals...