Forget LT1....if you really want power go LS1...say Vorteck....A stock Vortech engine puts out 330HP +.....Basically, it's a Gen III (aluminum block and heads, reverse flow) TPI engine. Find a full size late model PU (2000+) and it should have one.....great engine
I guess you missed the part about a budget build. Finding a '94-'96 carpice, fleetwood, or roadmaster for less then $500 is a lot easier then finding a wrecked '00+ truck for a price I can afford.
Building a chevy truck is ton different then building a jeep, the LT1 and 4L60E should bolt in. I'll do new motor/ trans mounts, reseal the motor and trans, new plugs, new belt, a set of headers, i have acess to an exhaust bender for an exhaust, a fuel pump which i'm thinking about trying to get a stock LT1 car in tank pump to work in the truck's tank. Then you add in $200 in nuts, bolts, compression fittings, lines/ hoses, I might just go with a floor shifter for the trans instead of messing with making a colum shifter work.
Ideally i'd like to have less then a grand into the motor/ trans swap, that really means 2 grand because of stuff that goes wrong/ should be replaced that I didn't realize.
I like the idea of fuel injection for fuel economy, smooth power, and the lack of monkeying around once you get it dialed in. I am not opposed to a carb but I'm affraid of the fuel economy. The LT1 i'd be gettting should be a 260HP and i know that's not too hard for a carbed small block.
I was thinking about a 383 or even just a decent 350 though I'm pretty sure i'd be into the motor $1500-$2000 grand. Keep throwing ideas and me and let me know if i'm smoking crack with my thinking
Also how much of a quick car/ truck is chassis setup and tires? Some of my buddies have pretty wild motors in damn near stock cars/ trucks. Would spending some $$ to get the power to the ground make up for lack of HP?