N4cer

iTrader: (11)

Ok, so I bought some LS6/LS2 heads, and failed to ask what valves were in them. I should've known for the price that they're the solid valves. What's a good lightweight valve to buy and stick in these? Preferably more reasonably priced than not.

PREDATOR-Z

What springs do you plan on running?

chriswtx

iTrader: (5)

..... interested as well..Dual springs here..

N4cer

iTrader: (11)

PRC dual springs. G5X3. Wanting to rev to around 7000 (7200 if it'll hold with good rod bolts).

N4cer

iTrader: (11)

I'm thinking Manley Race Master valves. Since the heads are brand new, can I just stick these valves in the place of the old ones and be good to go? Should I get seals too just to be sure?

PREDATOR-Z

You need to get a valve job for the new valves.
But since you're unning such heavy duals, I wouldn't bother. Just stick with the valves you have.
On a G5X3 there is absolutely no benefit in going that high in rpm, unless you just like to hear the motor scream

orangeapeel

iTrader: (18)

6800 is plenty with the G5X3.

N4cer

iTrader: (11)

Ya think? I ask because my little 224 was just peaking at 6600. So I figured a bigger cam like a G5X3 would move way up.

So what's the deal? They have to make the head where the valve sits the same shape as the new valve? And a 2.00" Manley valve won't fit where a 2.00" GM valve was? I appreciate the education, guys. I know nothing about this, obviously.

Is there a beehive spring that would handle a G5X3, so that I could use lighter valves too? I hear a light valvetrain is great for power and revs.