Can a built and S/C'd LS1 make 880 rwhp on 93 octane?
 

A local guy made 880 rwhp with his Firebird. He claims it's only running 93, but I'm having a very hard time believing that. Car isn't stroked or bored...yet he claims it makes pump gas numbers almost as high as TT Vipers do.

Is he full of it? Anyone know?

The highest I've heard of is 550 rwhp on pump gas being forced injection. You have to go with the boring or stroking from as far as I know to get higher than that.

Is it twin turboed?

I have seen a 2002 Anniversary Edition Camaro SS supercharged, stroked/bored/cammed (Everything) dyno at 995 rwhp. So it's possible, but highly doubtful without the boring or stroking.

Anyone else's thoughts?

Thanks. It's running a twin-screw S/C. Stock displacement. I think he's full of it. He had to be running race fuel.

That makes no sense. Never seen a roots-style blower on a firebird/camaro.

But you can get stupid power out of a stock displacement forged 346. 880rwhp on pump IS possible with the right setup. (Naturally, this is not an NA motor).

No dice on that guy... if that were possible, people would be turning to them instead of 2JZGTE's.

How big a blower? Built internals? I've seen stock bores in the 700's. They say the stock motor will handle 700 with just new valve springs. Not sure if I believe it though.


Low boost (6 lbs) LS1 TT motors i've seen in the mid 600's



Blower only LS2 cars (no cams, headwork, etc) hit 500's

not on 93 octane

93 octane is regular unleaded down here though....

Never seen one with a Whipple on it? Not roots but TS.

And no he's not making near 900rwhp on 93 with an LSx motor, no way, no how.

what is premium? how much $USD?

Slow down. 800+ has been done in MANY cases on an 346ci LSX car.

no kidding. but not on pump gas.

Premium is 95RON, roughly .80c/Litre USD

Ultimate/Vortex is 98RON, roughly $1/Litre USD

Cheers,
Nik

octane ratings in ther countries are much different than in the US.