Finished my Everett Morrison Generation IV and registered it about three weeks ago. We have a Genesis 427, which we picked up about one year ago. Have driven it over 450 miles to date. Both the engine and the car have performed flawlessly. It starts with minimal cranking. We let it warm up before driving, given the 20-50
oil and air temperatures hovering around freezing for that last month. (Yes, we have a top and a heater). Once warmed it idles with the characteristic lump around 950 RPM. Pulls really well above 3000 RPM, but cruises well at 75 MPH in fifth gear around 2200 RPM. Although there were a few
oil drips initially, the seals have apparently seated and there are no leaks whatsoever at the present time.
We dressed the engine with a turkey basket and original style expansion tank to add to the 'original' look. We are partial to the black / silver look, opting for a black distribuor cap on the MSD distributor and a black coil. We even opted for K & N
oil filters, not necessarily because of their quality, but because they were white and the labels easily removed, thus fitting in with our monochromatic theme!
Cruising at a farily steady 70 MPH, 30 degree air temperature, for 100 miles in fifth gear running about 2100 RPM yielded about 12 miles per gallon this past weekend. Hey, no one ever said this was an economy car!
So to answer the original post question: I would have no reservations about the Genesis iron block 427.