Oh and on this "big blocks were cut off in 1978". It's really sketchy. They continued for sure in 79 to use them in motorhomes and such. This is similar to the slant 6. In cars, 1983 "or so" was it for the slant 6, but trucks ran through 1987. They also ran until the year 2000 in other countries. What did other countries do for the big block? Similar, maybe? Similar also was the run of the early Hemi. 1958 marked the last year for the early Hemi production, BUT medium duty trucks have turned up a year or two later with them factory installed. Think 354 Power Giant.