Y2K WS6

iTrader: (33)

I am building an APS Twin turbo car, Forged 347 engine. 9.0:1 comp. ratio 241 heads for the first season/year may go with ported if power isn't where I want/need), a descent cam ( can't remember specs right now) ( it's the APS base kit but i've seen some MAD numbers from them.

Looking at whether to go with an LS6 intake and p&p throttle body, OR go with a FAST setup, or maybe the new WEIAND street warrior.

I know the size of the intake, etc doesn't mean as much with boost. but what kind of HP/tq difference are we talking about on this? And what have you guys done/would you do differently?

Thanks!

BIG_MIKE2005

iTrader: (116)

I'll be running a Vir Jr EFI manifold w/sheet metal elbow & my Bo White P/P stock TB. I know I'll loose a little bottom end with it over other options but thats fine by me cause it'll carry the power further in the RPM's.

I'd say you'll be just fine on the LS6 though. No need to spend the extra on a Fast with your boosted build. Save that cash for another area of the project. Plenty of guys making big HP with a LS6.

dschmittie1

iTrader: (64)

Save your money and run your LS6. That or run a Vic Jr with an elbow. No need to spend the money on a Fast

Y2K WS6

iTrader: (33)

right now i have NO intake. lol well a stock LS1 but i don't feel that's near appropriate I'm looking to put down in the neighborhood of 575-600 on 7 PSI so the field is pretty open.

dschmittie1

iTrader: (64)

Well I am making 676rwhp with my stock LS6 intake stock 241 heads and 14psi from my procharger. I am looking to make the swap to a Vic Jr to have port matched to a better set of heads this winter. So my LS6 may be up for sale.

stevieturbo

Stock LS6 and TB will work just as well as most of the intakes available under boost...and cost a lot less.

EPP

iTrader: (22)

809 rwhp at only 14.4 psi of boost on an conservative Mustang Chassis Dyno! Over 400 ft lbs of torque at just over 2000 rpm to boot! This is with a stock LS2 intake and throttle body.



With less boost, attributed to the better flowing FAST 92mm intake manifold, we have made 864 rwhp on a 84 degree day on 93 octane! Bob

stevieturbo

Around a year between those graphs though. Are there any actual back to back tests ?

EPP

iTrader: (22)

No actual back to back test, but the customer has had this CTS-V at another dyno shop (closer to where he lives) when the LS2 intake was on it, as well as since we installed the FAST intake, and saw similar results on that dyno, so I know our results are valid. Bob

Y2K WS6

iTrader: (33)

Bob a couple of questions what was the displacement of the engine, and what heads. since i'm using 241 heads now... how much of an increase do you think it will gain?

Thanks! nice dyno charts those Rock!