454 tbi questions

[LT7A]

The TBI setups are definitely performance limited. But for reliability, I don't think you would find an aftermarket system that could surpass it. That's what the performance oriented shop near me says, and that's what many of the threads on here seem to indicate when you hear the difficulty of getting those aftermarket systems to run right. I don't have any experience with the aftermarket systems, but I have run a TBI system trouble free for 29 years and 235,000 mi. The aftermarket systems are definitely more tunable than an old OBD1 computer. But if you put the fuel system together aware of its limitations, it should give you years of trouble-free service.