What do I NEEEEED?

You will definately need to do H/C/I, if for no other reason just to make your engine run more efficent. . You may not need to do full bolt-ons. Maybe someone who runs nitrous can help out some more.

typically any aftermarket h/c/i swaps you net anywhere from 290 - 320 rwhp depending on brand, and supporting mods...a trick flow top end kit or a afr 165's/ performer rpm intake/ custom cam are two different popular combos people choose for there 5.0, either one will put u at the 300 rwhp or more.

What is your budget?

Here is what I would do for 320-340 RWHP:

- AFR 185's with upgraded valve springs/ARP 7/16" studs
- Holley Systemax
- FTI Custom Cam (or similar)
- 10:1-10.5:1 Compression
- 24 or 30 lb Injectors
- Matching 80mm MAF
- 70mm Throttle Body
- 1 5/8" Longtubes
- 6,200-6,500 RPM

With the right set-up and tune, you can make that combination work

The RWHP will go up, the more aggressive you want to go.

To reach 325 NA rwhp with an OEM block is no small feat :Word:

You can't compromise on A N Y parts with a goal such as this

Dizzy twisting & elevated fuel pressure is not gonna cut it for tuning

Here are my thoughts

First of all ... your motor needs to be fairly fresh
or
At least be proven to have good ring seal for maximum efficiency

These are general recommendations for main combo parts

1) TFS or AFR heads with 1.6 RR's
2) Ported mid length runner intake such as Edel RPM or TFS Track Heat
3) Custom cam & ensure your guy knows 325rwhp is expected
4) Larger tb & maf
5) 30lb inj's
6) 255lph pump
7) LT's & OR pipe
8) Pulleys
9) Custom Tune

You'll want to get your compression up with tactics such as ...
Small chamber head choice
Cut the heads a bit
Thin head gaskets

Be prepared for a good bit of cam lope
and
Its gonna be pretty thirsty for 93 grade around town

That should put you in the ball park for your goal
however
If your cam guy tells you something different

Listen and obey him
and
Forget what I said

Grady

Also keep in mind, the less accessories your engine is turning, the more output it will make

However, I like my belt-driven accessories: Air conditioning and power steering for example

or if your like me and your a/c compressor locked up, you may just want to take it off .