JBuenrostro

I have a question for you guys. I wanted to know how much horse power can your stock internals handle before you have to upgrade to forged internals?

PREDATOR-Z

~ 600 FI, give or take a few, but for how long is really the question.
My previous nitrous setup lasted 1.5 racing seasons at that level, then ringlands went byebye. #7 and #5 (go figure)

allngn_c5

iTrader: (3)

Not to steal this thread from ya but predator Z give me your opinion on my N/A setup and how long before she blows? Your opinion would be appreciated.

JBuenrostro

Good question??

SVT THIS

iTrader: (27)

I'm not an expert but I think you should be fine NA. He said 600 FI, which would be boost or juice. I've seen a lot of people in the upper 400s, low 500s with non-forged internals NA. And unless you spray or run some sort of FI setup you should be fine unforged.

Correct me if I'm wrong though!

GuitsBoy

iTrader: (4)

Actually, IMO its usually the RPMs that bust up a n/a motor. Forced induction dosnt require you to spin to the moon to make big numbers, so the piston speed is comparitively low. An agressive N/A setup will have big heads and cam requiring you to really spin the motor up to make power. The load on the rods and pistons increase exponentially above 7K rpm. Not to mention that the rod bolts are weak too. Nitrous however will be hard on a sttock piston if you run enough.

I could see a turbo or blower making the most HP most reliably with a stock bottom end.

allngn_c5

iTrader: (3)

thanks for the help.

300bhp/ton

I think Bob @ EPP normally say somewhere 550HP is sorta safe (not sure if flywheel or rwhp though) but I do agree with Guitsboy.

PREDATOR-Z

Your numbers look very stout and in par with that setup considering you have EWP and no cat/mufflers.

Did you re-dyno your setup at another dyno to compare?

As for the lifespan, that is up to the LS1 God and how nice you treat it.

allngn_c5

iTrader: (3)

Yes I left LG Motorsports at 460 rwhp 420 rwtq running a safe/rich base tune to get me back to Michigan so I could go back to work. I had it tweaked and re-dyno'd at Walsh Motorsports. 12.8 to 1 A/F Ratio yields the current 473 rwhp 431 rwtq. I spoke with Kirk at Vector Motorsports and he feels he can tune out my cam surging, and improve my drivability and quite possibly pull a few more ponies out her. I would love to see the final tune yield 480 rwhp 435-440 rwtq. I need some cash first. Wish me luck. Thanks again for all the good input on this thread.

PREDATOR-Z

I cured some of my surging by increasing timing at part throttle and my stoich is 14.7 to 15.0
I miss the football games and nice concerts at the Pontiac Silverdome, I went to college 70 miles from Detroit in Ohio at BGSU.
Not to mention the Detroit Auto show, the Greek Town (Bouzouki Lounge) and of course the Grand Prix.

~JOSHUA

iTrader: (92)

This thread caught my attention, because I'm about to bolt up a brand new Incon twin turbo kit to my '02.

My cam only set-up just dyno'd 421rwhp and 385 rwtq.

I plan to keep the stock 241 heads for now, and keep the same 236/236 .581 112LSA cam because a local guy who has a maxed out Incon kit said the cam will lower the peak cylinder pressure compared to a 114+ LSA. He said I can make well over 700 rwhp with this cam if I get the bottom end to handle it. Which is good for me becuase I won't have to waste effort swapping cams.

He said I can run more ignition timing and not worry so much about getting bad pump gas. The wastegate will still make the same boost regardless of cam LSA. He told me the 5-6 psi with the stage 3 turbos (GT37) will get around 550 rwhp. He also mentioned to get the air/fuel ratio in the mid 11's/1 to be completely safe.

I drive the car about 3k miles per year, should I have any concerns?

slmdLS1

iTrader: (8)

couple of guys have run a 150-200 shot on h/c (n/a)450rwhp cars havent they?

MagiC5

stock bottoms have been proven to handle over 1000RWHP. doesn't mean everyone can make that power on them.. but it's been done.

GuitsBoy

iTrader: (4)

The cranks have been proven at or past the 1K mark, but im not so sure about the rods or pistons. There was a turbo car that was doing better than 800 RWHP on a 98 formula with stock rods and pistons, but I believe this eventually got trashed.

tonyt123blue

iTrader: (8)

I have a H/C car that was making right at 400rwhp with a 224 cam I made 520s with a 5177 kit no jets.I have run about 10 to 15 bottles thru it.I just swapped in a G5X3 and went to 423N/A and 573 on the bottle.no problems yet with 2 bottles gone thru.I am thinking about some new rods and pistons this winter though

LastBlack02SS

iTrader: (21)

alln_c5, do you seriously get 34.5 mpg on the freeway?!!!
[QUOTE]

Ubergeist

iTrader: (6)

My friend has a 60 trim SS with a tad over 500whp, and still no problems.