I have a 94 F150 with a 300 I6 and was wondering what yall would sujest for a lift and tire to put on it to were i wouldnt lose anything from the engine?  

you can fit some 32" tires without a lift. we had an older f150, with a freshly rebuilt 300 6 cyl., w/ 33" tire. me myself, i wouldn't go much bigger than that if any at all.a good 2"-4" lift should take care of 33's... depnding if you really wanna offrod it or not.  

Freshly built or not you need gear to play right. Every time you increase tire size without changing axle gears you loose performance. You could run 38's with a 300 and do fine IF you have the axles and axle ratios to properly support them. I never did understand this "I want to lift my truck and make it slower and less powerful" thing because they do not want to change the gears and come up with excuses as to why not. If you want to talk the talk (with looks) then you need to be able to walk the walk too (with proper gears)