Stealthrider

I have a bone stock 2002 Firehawk. I want to start buying parts for modification. The car will be daily driven at times and taken on road trips. I'm not sure what direction to go to achieve my goal of 425-450 rwhp with decent gas mileage, stock idle, and good drivability. I'm not expecting stock gas mileage. I don't know if I should do a 383 or a head and cam package. Which would be a better way to go for what i am trying to do?

earmuffs

600 hp daily driver. Turbo it.

lemons12

iTrader: (71)

I would do full bolt ons and a hundred shot. Will easily pet u hit your mark, cheapest, easiest to maintain, stock idle and street manners, etc etc.

David21

iTrader: (1)

Heads, cam, intake, full exhaust, and tune and you should be right there power wise.

Add some spray for good measure and replace that weak rearend. I'd also do subframe connectors, lca's, and lowering springs but that's just me

firemandan1700

iTrader: (1)

How much do you have to spend? What lemons said is true 110%

If you have some cash to spend. A mild, decent cam with ported/CNC heads will hit your mark. Dont forget to add your basic boltons (headers, exhaust ect...)

And DO NOT forget a tune either!

09camaro383

iTrader: (2)

my car was just dyno and it did 445hp/429tq with an auto but is having some problems and smoking like a train and didnt finish tuning i think when i fix the problems and get a good tune i will be in the 450-460s and im running a $550 heads with some good heads i could be on the 490hp and 460tq if you car is auto you are going to need some good heads and i think you will be in the 420s

Stealthrider

I'm looking to spend $5K- $5500. Actually heads and cam was my first choice. I am considering AFR head, cheatr cam, and FAST intake. My other choice is the similar to my first choice. The difference is that the bottom end would be stroked to a 383.

David21

iTrader: (1)

With your budget, I'd build a 6.0 but that's just me.

99 Blue Bird

iTrader: (3)

if u are willing to spend that much than i would just buy exactly what u said. buy a 383 already assembled with heads and cam from tsp so u can just put it in your car when u receive it.

or u can spend 800 dollars on a good nitrous kit, and lets say 2k on bolt ons ( fast setup, 243 heads, u/d pulley) and remain stock idle and gas mileage and exceed the hp goal u want. than u either saved 2200 dollars or can put it to something else for your car.

dont be scared of nitrous. it is very safe for your motor aslong as its hooked up and tuned correctly.

earmuffs

5500 to build a 6.0 is a little low. unless you keep a stock bottom end. Boost the 346 and make 600hp.

The Mighty Texan

iTrader: (4)

Thats what i was going to say too

David21

iTrader: (1)

Depends, if you're patient you can build a 6.0 really cheap

David21

iTrader: (1)

The fact is op, there is a bunch of different ways and in the end it's all about your preference

disc0monkey

iTrader: (10)

226-228 on LSL lobes on 115 LSA, AFR205s, kooks dual exhaust, fast 90

t5munoz

Email Tony Mamo he will get you on the right track. Afr heads are a good choice but you have to pay to play. You want to build it right then you need to pay some money to do it right... Tony will lead you in the right direction!!

180ls1

iTrader: (4)

Option 1: Boost

Option 2: Afr heads, 228 on 114 cam, ported fast intake and full boltons

Option 3: Bottle.

180ls1

iTrader: (4)

I see you said stock idle, the biggest you will want to go with stock idle is a 224/220 on 116 or maybe like a 224/224 on 115 will be pretty close to stock also.

NVR_SPDS

iTrader: (39)

An easy, reliable setup is some AFR 205s w/224/228 114, or 210s, and matching cam, with a FAST and bolt ons. Setup correctly, you can probably make more than 450 while still being very driveable.

I have AFR 205s, and their 224/228 and am damn happy with it, even running through stock manifolds/cats, and a stalled auto. It does lope some, but its not bad at all. It makes power all over the place!

180ls1

iTrader: (4)

this setup will make great power and with a quality full exhaust and an underdrive pulley should make 450rwhp. But that cam will have some lope it it, but not very much. Like i mentioned earlier if you want no lope the biggest you will want to go is something like the stealth 2 which is 224/220 on 116 or something very close to that.

Latch

iTrader: (8)

If you don't mind refilling nitrous bottles every so often then spray isn't a bad way to go, but with a well matched heads and cam setup your goals could easily be reached. More cubes would be a good idea for helping with streetability, but if I were to go with more cubes I would lean towards buying a 402 over having a 383 built.

Boost is always nice but if all he really wants is 420-450 RWHP then it seems FI would be overkill.