Just picked up a 1980 K10 4x4 with the 250 I6, and given the number of oil leaks I'd say it's due for a refresh. Still runs great, but I'm a little anal about oil leaks.
Anyway, since I'm going to be going through it I figured why not build it up a little for a little more power. Not looking for anything crazy as this is going to be a daily driver/weekend wheeler, but wouldn't mind getting up into the 300-350hp range if at all possible. From what I've seen here already I don't think that's to high of an aspiration.
Unfortunately I know absolutely nothing about these engines so hopefully you all can lend a helping hand recommending a combination to meet my power goal while still retaining drive-ability and reliability.
So here we go...
1. Is the bottom end robust enough for this kind of power or am I going to have to get different rods?
2. What's the best option for pistons? Would like to bump it up to somewhere around 9:1 CR, but don't want to have to spend the big bucks on custom forged pistons.
3. Any favored camshafts that everyone agrees on for a good performance street engine? I have Hydroboost brakes so vacuum isn't a huge issue, but I don't want it to have a super lopey idle either. Manual trans so no torque converter issues to worry about, and the axles have 3.42 gears and 31" tires.
4. What 4-barrel intake is favored? Will probably run a Quadra-jet carb for it's off-angle reliability if that helps any.
5. Obviously the heads will need a lot of work, so what all is recommended and is the anyone in particular you guys prefer to send your heads off to?
Any other tips or advice would also be greatly appreciated.
