So as trucks grow and gain mileage, it comes a time in a Truck's life to be refitted with a rebuilt motor. My daily driven '81 K5 305 TH350 1/2 ton axles (stock, not exactly sure what gears) 33" Wild Country's. So my 305 is growing a little tired. I have already rebuilt the tranny. This truck is my daily driver, does some hauling and (needs to be more) wheeling. The most important things to me for building my motor are #1 fuel economy #2 torque. I do not need to be able to shoot off of the line like a rocket. All I want to be able to do is pull a load when I have to, and get there with a decent mpg. Now what I am excited to hear about... What motor should I get and why??? What kind of numbers (mpg, torque, hp)do/did you get with your vote? 383 Stroker 350 305 262 (4.3) Hmmmmm, what about a diesel? Fuel Injection is possible but I would prefer not to go that route. I like my simple carb I know a lot of people are going to ask why the f#$k would you build a 4.3? Well I never even considered it until I started reading http://www.73-87.com/7387info/articles/86_v6_vs_v8_01.jpg full story http://www.73-87.com/7387info/Road_Test_8187.htm I kinda doubt I would build a 4.3 or another 5.0, rather go for a 350 but I was wondering if anyone would have some words of wisdom. Yeah I just thought of putting a diesel in, sooooooo I dont think i can edit the voting, so I think I am going to delete this post Thanks for your input!!!!!!