That's not really true. The Chevy 454 didn't relly like RPM's very well. The 460 is about indestructable. I've known several people who have drove em real hard and had well over 200K on em. I've been told by a former Ford mechanic that the 460 will turn over 5K RPM"s without any problems.
THe gearing is going to determine mileage. I had a 77 with 4:73s that got around 13 empty and 11 pulling close to 10K . I also know a cuy with one now, mid 90's, 4X4 Auto who claims with EFI that empty he's getting 18 (I'd really like to be able to prove/disprove that) empty on the highway.
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Today's Featured Article - Timing Your Magneto Ignition Tractor - by Chris Pratt. If you have done major engine work or restored your tractor, chances are you removed the magneto and spark plug wires and eventually reached the point where you had to put it all back together and make it run. On our first cosmetic restoration, not having a manual, we carefully marked the wires, taped the magneto in the position it came off, and were careful not to turn the engine over while we had these components off. We thought we could get by with this since the engine ran perfectly and would not need any internal work. After the cleanup and painting was done, we began reassembly and finally came to t
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