Quote:
Originally Posted by brans72
What about piston type? I have a buddy that will discount a little for me at the machine shop  . I planned on reusing some parts but will replace water pump,fuel pump, oil pump,push rods and maybe few other things i missed. What size cam though? Anything else to look out for or take note on? What about balancing is this recomm on this setup? |
You should balance the rotating assembly. I agree, replacing those things is cheap and may as well be done now.
I would just use some flat top pistons and keep the compression at or below 9.5:1. No need to go higher. The typical flat tops have valve relief cuts in them. Cast pistons are more than enough for this, but you could go to hyperutectic for a little extra cash.
When you start looking at heads do yourself a favor. Considering the age of the vortecs and that they may need full rebuilds it may be cheaper to just get a set of aftermarket iron heads assembled. Don't buy an intake untill you have heads. Check with the machine shop on what it will cost to FULLY rebuild heads then do some price checking on new heads, they have come WAY down. Even a set of stock replacement heads from Pace performance or Scoggin D chev might be a better bet than used ones.
EDIT: I will look up a few different cams fro you, but what kind of trans is going behind it?