10.5:1 big block should be just fine on 91 or 92 octane with a lead substitute if valve seats are original unlesspulling, climbing Pikes Peak, or racing. I doubt the owner is running race gas.
Someone I knew bought a pickup at a sheriff's auction, later he found a hidden compartment under the bed somewhere with bricks of marijuana. He turned it in. Better man than I.
Originally Posted by IMSA_Racing_Fan
Yep, 460. I had a 1972 Mk IV. It is a unique experience cruising along with a massive hood reflecting the streetlights.
This was my favorite personal luxury car of all time. Class all the way!
My dad had one bought it brand new in 1969. Kept going back to the dealership after a hot day car would not start after you shut it off. Traded it in for a new 2 door Cadillac. After that we was on a Buick kick then back to Lincoln Town cars. Leased a Lexus when they first came out loved that car and stuck with them to he passed. That full-size Lexus was the best cars he's ever owned he always said. During the 70 and 80's he got stuck with to many cars off the showroom they were horrible all American cars.