Who knows the most horsepower made off of a non-intercooled YSi?

[stevieturbo]

Little late in posting this, but my little YSI made 1182 HP, but more impressively, it made 1142 foot pounds of torque!

What car ? engine ? spec ? fuel ? etc

[Greg D]

The YSI is on a 555" BBC. We used VP C-16 on the dyno. The YSI is actually too small for an engine of this size and caliber, but I went with what I had. It's going in my 1964 Chevy Nova 10.5" tire car, (3000 lbs. with me in it).

[m3r]

WOW!
How fast are you spinning the supercharger?ic?

[stevieturbo]

17psi on a 555 ?????

Im making 19psi at 7000rpm, but thats just haning on to cross the line.

Im on a custom 12-rib setup,, and I dont beleive I am suffering from slippage.

With an 8.5 crank, and a 3.0" blower.....go figure...

Im amazed the YSi can make so much boost, on a huge engine like a 555 !!!!!

On the other hand....
There is a guy running low 8's at 160+ in Australia with a 408ci LSx and they say they are making 12psi spinning 50,000rpm with a cog drive, and they are using a pretty big cam.

When I ran the stock 346LS1 and I was making around 10psi, I was spinning to about 43000rpm.

I dont get it......something doest add up.

[m3r]

17psi on a 555 ?????

Im making 19psi at 7000rpm, but thats just haning on to cross the line.

Im on a custom 12-rib setup,, and I dont beleive I am suffering from slippage.

With an 8.5 crank, and a 3.0" blower.....go figure...

Im amazed the YSi can make so much boost, on a huge engine like a 555 !!!!!

On the other hand....
There is a guy running low 8's at 160+ in Australia with a 408ci LSx and they say they are making 12psi spinning 50,000rpm with a cog drive, and they are using a pretty big cam.

When I ran the stock 346LS1 and I was making around 10psi, I was spinning to about 43000rpm.

I dont get it......something doest add up.

I make 30psi at7800rpm,and the supercharger 67000rpm (cog) 3liter(183cui)

[Greg D]

WOW!
How fast are you spinning the supercharger?ic?

I'm using an 83 tooth crank pulley and a 29 tooth supercharger pulley. At 6,500 engine RPM, the blower is spinning 64,182 RPM, just under Vortech's claimed MAX RPM limit of 65,000.

This is a non intercooled deal.

I am looking to purchase a XX trim in the very near future.

[stevieturbo]

In theory, Im spinning to circa 68,000rpm at 7000rpm.

Boost is still linear, hence I dont beleive I am suffering any huge slippage. I must try and rig up something to measure blower speed though, as it would be very interesting to see for sure.

It would also be nice if they made a bigger compressor for a YSi sized blower.

M3R..

Have you had your car out yet with the blower ?? How's it performing ??

[m3r]

I have only drive it on the poblicroad yet,I dont have any numbers yet(horsepower ,stripptime)To the summer i will go for the 8s at the stripp.

[stevieturbo]

How do you like it compared to your last rubo setup ???

I think the power delivery with my YSi is excellent.

[m3r]

I like the supercharger,Its more power now.

[swilldup]

r you guys talking rwhp or flywheel???.....our renegade car made over 900 rwhp
at 35 lbs of boost.......went 8.57 @ 161 blowing the tires off w/ a 1.388 60'

[Greg D]

r you guys talking rwhp or flywheel???.....our renegade car made over 900 rwhp
at 35 lbs of boost.......went 8.57 @ 161 blowing the tires off w/ a 1.388 60'

Mine was 1182 crankshaft HP with only 17 PSI.

[stevieturbo]

The CAPA Ute from Aussie land runs a 408 LS1, and makes something like 1100 dyno HP.

It runs 8.6x @ 164 or thereabouts. 3100lbs raceweight.

Although they say its only making 12psi. Even more striking, is that they say they are only spinning 50krpm on the blower..

You guys are also making some power. How fast are you spinning the blower ?