Junorocket

Hi,

I'm working on my LS6 engine right now, and just like the title that I put above, aiming for 500 hp on wheels.
So far these are parts that I have bought.
- Forged bottom end (K1 crank, Lunati rod, 3.905 Wiseco piston).
- PRC 227 heads, 62cc chamber.
- Comp cams, 231/239, .617/.624
- Morel 5206 Lifters (I have Comp short travel lifters as well, but I think Morel will do the job better, right?)
- TSP roller rockers.
- Holley single plane intake.
- Holley 4 barrel 1000 cfm throttle body.
- MSD coils.

This motor will sit on a weekend warrior C10 truck with a TCI 4L80E 6 speed transmission, 3.73 final gear, and 27" tall wheels.
Any idea how far I am from the 500 hp that I aiming for? Any advice on what parts that I should use or replace?
I'm thinking about swapping my cam with something that a bit bigger, any advice on that too?


Thank you.

ddnspider

iTrader: (26)

Wheel HP or flywheel? Title says whp but question at the bottom says 500hp. You're about 75 whp shy of 500whp. 500whp stock cubes through a 4l80 and 27" tire is a tall order. Consider boost?

JoeNova

Stock compression pistons? If so, the forged rotating assembly isn't helping you to your goals at all.
Neither are the MSD coils.
The roller rockers are still on the fence depending on a few variables.

You're basically left with a head/cam/intake LS1. I agree, 75whp short with the 80e and that intake manifold.

SLOW SEDAN

iTrader: (13)

Just save your money and have Hio install boltons, that'll easily clear 500!

ddnspider

iTrader: (26)

OH NO U DIDN'T!

David@Vengeance

iTrader: (2)

500 is going to be a tall order, if not on the verge of unrealistic through a heavy 4l80. We have made right at 500whp with The following parts through a stick:

-Mast Heads (Milled)
-Vindicator Camshaft
-Johnson Lifters
-Ls3 Rocker arm set
-Fast 102
-102 Tb
-1 7/8 headers and supporting exhaust

This combo was not the most street friendly either, so keep that in mind as well. Let us know if there is anything we can help you with.

Darth_V8r

iTrader: (4)

There are a handful of guys that hit 500 rwhp NA on a stock bottom end LS1. Read the RIP 346 thread in my sig to see what I went through to get there.

panda240ss

I WAS WAITING FOR IT!!!! dammmit!!!!!!!!!

HIO get yo slow turd here

Junorocket

I’m sorry I mean WHP.
Noted sir, 425-ish WHP, I’ll be happy enough with that number.
As for boost, i’m not really sure about it.

Thank you.

Yes sir, completely aware about that, bought the rotating assembly because there’s no any machine shop in my country could do a crank balancing job.
So since the shipping cost would be pretty much the same if bought another stock crank I decided to bought a forged complete rotating assembly, and on that moment I didn’t have any goal about HP in any kind of way, just want to make it run again, and cosmetically looking like a gen 1 motor, haha

Considering this is my very first time working on my engine all by myself, I will take 425-ish as good start

thank you.


Have no idea what Hio is, but judging from the response I think it might be something funny

I know, I didn’t even know why I pick 500, haha
Sure, I’ll let you know if I might need something

Thank you.

ddnspider

iTrader: (26)

auto trans, big tire?

Darth_V8r

iTrader: (4)

Manual trans big tire.

My point was more - it ain't easy

ddnspider

iTrader: (26)

Oh, I agree. I know yours was a stick. I was more curious if you had heard of anyone doing it with an auto.

JoeNova

Its possible. It will just suck to drive.
My buddy did a 4.8 that made 600 at the crank on his engine dyno. That would be 450-470 wheel depending on drivetrain.
A 5.7 would certainly make it easier to do, even with an auto.

Nothing is impossible, but sacrifices will be made.

Darth_V8r

iTrader: (4)

I have not actually. Surely it has been done but I think all of them I am aware of are tri-pedals.

Now a 480 hp will beat a 500 hp stick, so track goals matter more than power goals

Jtm2085

iTrader: (1)

I believe chrs1313 hit 5xxwhp through a 4l60e

NHRAFORMULA00

iTrader: (2)

522 to be exact. that motor is in my car today. 12-1 compression. He rebuit it a couple of years later with a 6.0 block and it made the same H.P. numbers but the tq. was about 30 higher

Darth_V8r

iTrader: (4)

I was sure it had been done. Thanks for that. Still, point is, it is rare company

ddnspider

iTrader: (26)

Linky? I only found his cam only dyno of 42xwhp.

ddnspider

iTrader: (26)

What were the heads/cam used? Stock pistons? Can't find much info, would be cool to read it.

LilJayV10

iTrader: (39)

shooting for 500 to the tire?
my advice?
put a a blower on it.
done.