I´ll start my head build this week but can´t decide on parts/brands. I think I´ll go Supertech dual springs and titanium retainers, never heard anything bad about them.

I heard the exhaust valves can drop due to the heat, want to upgrade them but what about the intake ones, waste of cash on a low milage head? Hmmm...

 

can i have your old stock valves

 

Should add that I aim for 800+whp and maybe a fast visit at 10.000rpm just or fun.

 

I would upgrade both. Stainless steel black nitrided intake valves and inconel exhaust valves.

 

Hit up laskey Racing, I just had my head done by him, awesome communication, options, and turn around!

 

While you are in there, I don't see why you wouldn't upgrade both.

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Changing stuff can be a downgrade sometimes, these engines are awesome and could have good valves from start.

Thanks, will do both. Ferrea? Other good options?

 

if you are going 800whp supertech should be plenty

 

For drag cars making power in the 900+ range we use valves with thicker stems and a different valve job to help the stuff last longer.

Also, supertech has stiffer spring availability than Ferrea.. I think ferrea taps out at around 100lbs on the seat, supertech goes up to 120 or so if I remember correctly.

 

Interesting, thicker valve stems should mean more weight? Or do you use other materials? We used titanium valves in a customer engine a while ago, is that common in these engines? Worth it?

Thanks guys, really helps to get your opinions.