1995 Chevy Tahoe Lt 4x4 5.7 350 Does have a little bit bigger tire 265/75/16
Original Owner has been garage kept its whole life. 135k miles
I have put fuel filter, throttle position sensor, catalytic converter, rebuilt tbi with brand new injectors, new cap,rotor, wires and plugs.
The tahoe is sluggish, no power and poor fuel economy. Slight hesitation when you push the throttle.

 

whats sluggish? ie what speeds, gears etc. and what poor mpg, I mean they are heavy big v8 trucks so everything above 12-14 is acceptable really and they will not win you any races .

was it sluggish before or after the things you did to it? are all the parts you installed done properly etc . go over them again and check nothing is loose or came lose.

 

We set the timing the correct way. That has helped a ton with the power. (whole new truck).
Replaced the Throttle Position Sensor, PCV Valve, EGR Valve, Fuel Pump, Fuel Filter, Cap, Rotor, Wires, Plugs, Catalytic converter is new, thrown over $1000 at this thing.
Still has a lope on idle sometimes and then also has a stumble when you are driving down the road. You can floor it and it cleans out and goes.

 

if I was you I would try a TBI spacer.