Looking for more pep off the line

Years ago I apprenticed at a Cat dealer. A 1160 V8 came in from a packer. These were medium duty engines with 1 compression ring and 1 oil ring. Different strokes to change displacement and different model numbers; 1145, 1150 and the 1160. This engine broke an intake valve head off. Bounced around the cylinder, back out the port and into another cylinder. The heads had a common intake and a crossover where the air came in from the filter. That piece of valve went over the crossover and into all the cylinders on the other bank. Heads were dented up. How it got past the other intakd valves and across the intake I still do not understand.
You could get the 1160 in Ford 8000 trucks. Worked good in gravel trucks, but of course as a tractor they were inexpensive. Guys would hook onto a 40' trailer and head to Texas with a load. The 1160 was rated at 225HP which was likely pretty close to what was required to run a load down the road. They would knock out #7 and #8 rod bearings. R. Angus figured out that if the power screw on the governor was backed out a bit to drop power to 215HP, they would run all day at that on the dyno.
Cat re engineered the engine saying what all they changed and gave it a new model designation, 3208 with the power rated at 215. They eventually turbocharged it and got power up to about 400.