273 to 340 swap

if that motor is a 69 340 if i remember correctly it used the old style water pump and timing cover,,,,only the 340 timing cover had the makes in the cover no tab like a 273,,i have A EARLY 340 cover with the timing marks on the cover im not useing,,

the easiest way is the early stuff or you will be needing a new radiator like soem one replyed,,or you can make a lower hose using a piece of pipe to join 2 together,,,i have been down that raod before,,it just doesnt look factory,,but works,,

i suggest you get a high performance old style pump,,early 340 cover or use the 273 cover with old style hi po pump then all brackets pulleys will work,,and use your same radaiator