DemonicZ

1.TSP 347 LS1/LS6 Rotating assembly
-Eagle Forge crankshaft
-K1 Lightweight H-beam with ARP 2000 bolts
-Mahle Motorsports -4cc flattop
-King and rod bearing set
-balanced rotating assembly
2.PRC Stage 2.5 LS6 Head & Cam package
-PRC .650" dual valvespring kit
-TSP Tsunami Cam (112 LSA)
-7.400"
-CLoyes LS1/LS2 Single Roller hex a just w/C5R 3 bolt cam
3. Fast 92mm intake
-Nick williams 92mm TB
4.42lb Bosch injectors
5. NGK TR 55 spark plugs
6. American Racing headers 1 3/4" with catted y-pipe
7. SLP Loudmouth Dual/Dual
8. 85mm Z06 MAF
9. SLP Lid

the motor will be backed by a built 4L60E with TCI super pro overhaul kit and B&M stage 2 shift kit, Spohn extreme duty chromoly drive shaft and a moser 12 bolt.

My ultimate goal with this is to hit 550RWHP and 560+ RWTQ on stock displacement and N/A. I know I could easily go spend the money on a LQ9 and a turbo and make into the 600s but this is my first build and this is what I want to do before any says why not do get the LQ9 or LQ4 or LS3 427LSX or 454LSX. Yes I know those are many more options for me to choose.

badazz81z28

iTrader: (6)

You are not going to hit 550RWHP N/A on a 346 without some killer head/cam combination and some form of boost.

If you haven't bought parts yet, highly consider a stroker 383 kit. Even then you will need better heads to hit the mid 500s.

With your current combinations...No more than 475 RWHP.

FWIW, I have a similar combination; I made 455 at the wheels with a manual with no CATs or any other emission restrictions...

Tainted

iTrader: (9)

yea man not gonna happen. you can hit 500rwhp n/a on stock cubes but thats about max. you either need to stroke it for a 383 or get a 6.0 and make a 408.

Mods in sig and im hoping for 525-550 and ive got a set of great heads, more compression, and a lot more ci.

Burken01

iTrader: (88)

im a 347 guy myself, are you buying the shortblock already built?

not much of a price diffrence between a 347 and a AES 390 for instance...

The HP you want will come from a bigger cube motor, and you'll be suprised that it isnt so much more money between a ls1 and lq9

Burken01

iTrader: (88)

and you don't need a forged crankshaft for your power goals, save the $

if you have a ls1 block, buy 6.25 rods/arp 2000 rod bolts, any 2618 piston with valve relief of your choice so your cam will clear and that it for shortblock...

you can keep your stock maf

get a fast 102 combo if you don't already have the fast 92, 102 will make more power...

and if you dont have those ARH headers yet, look into a 1 7/8 header w/ x pipe

you want 550 hp so you need to max that 347 out, even still you will realistically hit 460-475

Tainted

iTrader: (9)

Pat G and Tony Mamo both have write ups on the recipe to 500 Rwhp you should have a look at both of those. 500rwhp can be done but it's not easy or cheap

Burken01

iTrader: (88)

yes they do, but if your starting from scratch and building an engine and taking it to a machine shop for them to balance the rotating assembly yada yada, might as well get a iron lq9 block and a stroker rotating assembly IMHO since you can squeeze more power out of it. and In a year or two you have a platform to boost, I know you said you dont want to.. but its nice to have options

Tainted

iTrader: (9)

But the op could copy most of the parts in the build. Ive got all my stuff picked out, no replacement for displacement.

DemonicZ

Thank you for the input. Looks like I've got some serious thinking to do. If I want to settle for the 450-500 range or go ahead and get a larger displacement motor and shoot for my original 550 and 560+. As soon as I figure out what I want to do now, I will repost a new build list.

Tainted

iTrader: (9)

Try not to get hooked on a number but rather a track time

badazz81z28

iTrader: (6)

I would stay Aluminum if possible.

Burken01

iTrader: (88)

Everyone has a h/c ls1, if you want to stay ls1 then just upgrade you rod bolts and h/c it...

If your going through a machine shop and their doing your build then I would stroke it lq9.. That engine would be solid as an anvil lol

JPH

iTrader: (2)

You will never reach those RWHP goals thru an A4, espically with some of those parts you have selected. Make sure you check your oil clearances with that Eagle crank and those King bearings.

SNLPerformance

iTrader: (15)

500 RWHP- N/A is a great achievement with a 6spd. I would be more set/ "happy" with 460-470 rwhp with that 4L60E. That seems to be the norm with good off the shelf parts on a 346 cube motor.

zzcamaro00

i feel like its too much cam and not enough heads and not enough cubes.

Grr

iTrader: (2)

Look at the build in my sig, im shooting for 550whp with an auto. you are going to need a bigger bore, more head, more compression, and/or alot of RPM to get what you want.
If I was M6 I would be aiming for around 580whp
I could see a stock bore 383 doing 550 with 13:1 compression, a super victor, CNC trickflows and spin it to 7500, but thats as close as you will get with a stock LS1 block.
Order a LS3 block and go from there or be happy with 500whp max

DemonicZ

408 LQ9
Wiseco -3cc flat top
Callies Compstar 6.125" I-beam
Callies compstar crank

PRC Stage 3 LQ9 H/C
PRC.675" dual valvespring
TSP Torquer V3 112LSA
7.325"
Cloyes Race billet double Roller w/ Z06 Chain
TSP Ported LS6 oil pump


better shot at 550rwhp N/A?