Hey I want to do like 380hp on my b18c1 and what would be the best valve train choice/ Can I go stock??????? hey what is the best fuel supply?

 

yes, a stock gsr is capable of making 380hp. you can upgrade the valvetrain..but it's not needed. what are you asking about the fuel supply? what kind of injectors? fuel pump? FPR?

 

I was talking about both the fuel supply and valve train by the way I like your picture LOL

 

As far as fuel supply, you'll need something bigger than 550cc injectors. I'd suggest 750's with a walbro 255lph pump.

The valvetrain is only needed if you get different cams & intake mani, run a good exhaust manifold, and use a 3" dp/exhaust.

In other words, the stock head will make power, but you'd only need to change it if you decided to move the powerband up farther like if you plan on doing 680whp...

 

so stock valvetrain is good as long as u keep stock cams?...400-430whp? as long as it was with in the stock rev limts?

 

Problems with stock valvetrain is that when you boost "high psi numbers", the springs will have trouble closing your valves fast enough(at high rpm)
if the thin stock valve hit the piston(not enough to break) but usally enough to be slightly bent Then You will break the valve after a couple of miles becouse of metalfatigue(valve is bending when lifted and closing)

Supertech valves, springs, retainers costs 525USD.
A valvedrop will cost you a new engine(head and pistons will be destroyed, and if you are really lucky all your internal parts may be damaged.
most likely the turbine side of your turbo will be damaged becouse your head are spitting valvestems.

In my opinion change valvetrain, but again stock will work. just dont get back here and whine after a valvedrop lol

 

how high of psi numbers are u talking about?..i got a 60-1 and lookin to make 400whp....would that be to high?

 

100% stock head from throttle body to valves. i had a valve job done a while back as well as replaced my valve seals. Car makes just short of 400whp and revved to 8,2XX rpms daily.

 

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You can do it but you have to take a risk on stock retainers lol. It will hold for couple months or maybe more if you get lucky, but it will crack in half and drop the vavle. I suggest do the super tech retainers and springs

good luck!

 

I have made 800+WHP with a stock GSR head (without port & polish) with Valves, springs and retainers. I would recommend you change at least the Valve springs. You can leave the valves and retainers stock.

 

stock head be just fine