There are people in Japan that have pushed it to ~350 whp. I'm sure the cost to do so was astronomical though.

4.2L stroker kit + internals, head work, intake/exhaust, tuning...

It a lot of money.

 

You would save a ton of money by going FI.

 

I'm assuming you mean 350whp?

Idk of anyone who has hit that, but there are def. people over 300whp with N/A builds, but it is a but pricey.

If you do wanna go F/I, you should build your motor anyway, though you could get away with 350whp on the stock block.

If you don't mind me asking, what's your budget?

 

if you want a lot of power without forced induction .. put a chevy V8 in it .. call it a day

 

@03BaseSedan, i really don't have a budget. My plan is to determine what needs to be done to achieve my goal, make a list, and go down the line until theres nothing left on the list. Once i hit 300+whp, i'll more than likely start looking into a TT setup. Since the motor will already be rebuilt, applying a tt setup should be a lot less painful.

 

Not to start another argument but some of the parts and services you will need to make 300whp NA will be superfluous to an FI setup: high-comp pistons, headers, headwork, and lot and lots of tuning will all be to a greater or lesser extent wasted.

Ask most FI owners who went down the NA road first, they'll tell you they should never have bothered.

I see you're from Atlanta. Visit Forged Performance, ask them what you should do.

 

@tollbothwilley, thanks for your input.

@blueslate, Thanks for your response. I'm sure you're right, i'd probably save a lot going FI. But its not about that, i want to pull as much hp as i can get out of this motor without going FI.

 

@SwivelHips Thanks man, i'm about to head that way now.

SN: Does anyone know of anyone thats gone NA first that would be able to share their experience? Thanks again

 

Even if you do every bolt on and build the motor you're probably looking at barely 300whp. It's simply not worth it unless you want to spend $10k+ for 50-60whp.

On top of that once you build the motor with high compression pistons you can't go FI without risking blowing up your built motor.

I would suggest you search and search until you find the info you need but listen to everyone in this thread - they are all right

 

Dude, you asked... people are telling you... please listen to them.

 

na is only good with v8's is u want higher hp. juss go fi dude

 

I'm fully built NA, and only chose to do so for reliability on the track. With the ability to rev really high and my 4.08 gears, the car is completely different... if I was building for the street, I would've went FI. The comments in this thread are all pretty accurate, unless you want to spend around 10k to hit 300rwhp, just go FI and get a lot more power for your money.

 

^ listen to this guy

 

Remove engine, install LS2 with T56 and a mild cam. Then profit.

 

A local shop here charges 22k for a turnkey solution with brand new crate ls2/t56.