Z06 Heads
#21
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Originally Posted by HAZ-Matt
That is a decent price for assembled with the hollow/sodium valves.
Most race heads have Stainless valves.
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Well, here is my data point. I just bought some new 243s off ebay (haven't arrived yet, advertised as new). Includes solid valves, no springs. $480 + shipping. Wish I had called Gunnar first. I did go to the Patriot site but there isn't anything about stock 243s there.
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I believe(Gunnar correct if wrong) but Patriot uses its own castings, meaning they are not advertised as 243s, nor are they stamped with (243).
For the gains, money, time, and effort the stock LS6 heads are not worth it IMO.
For the gains, money, time, and effort the stock LS6 heads are not worth it IMO.
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Originally Posted by SHINER
i have heard that sodium filled valves are over rated. I heard that they are a safety deal that GM did on the Z06 motor, sure they help in heat, etc but nothing for performance. They will explode if you throw one against the ground.
Most race heads have Stainless valves.
Most race heads have Stainless valves.
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Originally Posted by massls1guy
Well, here is my data point. I just bought some new 243s off ebay (haven't arrived yet, advertised as new). Includes solid valves, no springs. $480 + shipping. Wish I had called Gunnar first. I did go to the Patriot site but there isn't anything about stock 243s there.
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For the gains, money, time, and effort the stock LS6 heads are not worth it IMO.
#29
Originally Posted by SHINER
I believe(Gunnar correct if wrong) but Patriot uses its own castings, meaning they are not advertised as 243s, nor are they stamped with (243).
For the gains, money, time, and effort the stock LS6 heads are not worth it IMO.
For the gains, money, time, and effort the stock LS6 heads are not worth it IMO.
Actually these are brand new GM 243 castings.