I am planning on using the original 472 block but plan on installing a modern, mild, dual-profile cam. Heads will be 71 or newer hard seat, with pistions that give a 8.5 - 9.5 compression ratio, single belt drive so I can use the HEI distributor, or the MSD-6AL ignition system, or the Accel spark knock control system.
The transmission will be either a 700-R4 or a 4l80E which is why I am interested in the fueil injection system since the engine will be turning slower at 75-80 mph. The differential will be the standard 2.94:1 limited slip gear ratio that cam in the 1968 model, unless a different ratio would give better results.
I am doing all of this for driveability, fuel economy?, & performance besides the cool factor on my custom & modified 1968 Cadillac convertible.
Other improvements will be power door locks, modern stereo, heated outside rear view mirrors, defogger rear glass, & heated seats.
If there are any questions, let me know. I appreciate any & all help I can get.