Ok I'm thinking the heads on old man's truck have the truck making low compression ratio, reason?
It's a stock 350 bore, dished pistons, I think they are cast, the heads(forget numbers) are gm replacments with 2.02 and are 76cc I think or 72cc. I also think by tuning the carb with a vac. gauage it has worn valve guides.
ANyway to tell this forsure like some tell tale signs?
ANYWAYS LOL I hear nothing but good things on vortec's, and it's be carb'd and I know I gotta get a new intake for carb, but would anything else need changed? will the headers and hei and everything else work?
Now onto the heads, is there a particular set(casting number) that's best or better then another? Would they all be a good upgrade? What vehicles should I lok for some in? and if it's 305 they'd be the same and work right and not be funky like some of the older gm castings for 305's with like 5xish cc and tiny valves like 1.8x or 1.7x?
Oh I know I need other valve covers too or adapters.
Basically I just see alot of info and want schooled on what would be the best stock vortec's to use, since they'd be cheaper then buying new ones. I would do a valve job and new valve seals as well of course. I don't want to do any port/polish work just clean up and valve grind compound stuff like that.
I figure they'd bump up the CR right, and it'd be good as long as I can do pump gas still.
Now lastly if not vortec's what else would be a good stock gm upgrade since these have lower CR and big valves, would a stock set of 1.94's be better off or should I mainly focus on some lower cc numbers like 64's or so?
The motor has a comp cam 268h cam which has 218 dration at .050 and .454 lift on both sides. duration is on both sides as well.
1
