Nope not at all. I have 2-440's and a 72 -400 and a low mileage mildly built LS3 that's on a stand waiting for another home. I also have a 69 k mile Rust free A body 318 904 yadayada. Thinking out loud. Trying to figure out what to build.. BTW, you put head studs,3 turbos and better fueling with the associated mods you will outrun a camaro a and still get really good mileage. How do I know,,, I own also a holy grail 98 dodge QCSB with a 12 valve Cummings. Rust free,slightly modded with a banks kit, single bigger, 16 mm turbo and #10 fuel plate, with 5" exhaust.