Ah yes, old memories. The 360 came out of a car and the oil sump was at the other end of the pan from the 318 from the van. I think I had to buy a new oil pump for the 360 and re-used the pan from the 318... I think...
Both engines had u-shaped brackets between engine and rubber mount. The 318 and 360 were different. I forced 318 to work, then was able to get 360 brackets.
318 engine is internally balanced. So use the 360's harmonic balancer on the 360, don't swap the one from the 318 over. 360 needs a weight spot welded onto the torque converter from the 318. I chose not to do that and instead got the converter from a 360 with weight already there. Problem was, it was a high stall car converter and slippage at highway speed under load was so great that I burned a transmission out. Problem with adding the weight is that the 318 flex plate and torque converter match up in any "clocking" since balance doesn't matter. Since 360 DOES matter, some kind of compatibility issue came up there. I forget those details.
That said, a 318-to-360 swap IS worth it. Dodge's claim that their 318 matched GM's 350 was FALSE. 360, yes.
