dcairns Posted March 26, 2003 Report Share Posted March 26, 2003 Well, I finally found an AWD dyno pretty close to me. http://www.xs-engineering.com Looks like they cater to the import crowd, but they do have the AWD dyno. Now as soon as Whipple can get their hands on an SS and certify the 6.0L kit for the SS, I will be making a base line run on the dyno. I prefer to compare numbers rather than "It rocks now dude, must be a 1000 hp gain..." kinda stuff Link to comment Share on other sites More sharing options...
RATFINK Posted March 27, 2003 Report Share Posted March 27, 2003 How much boost do you think you can attain given the 6.0's already high compression ratio? Has whipple said anything yet? RF Link to comment Share on other sites More sharing options...
zippy Posted March 27, 2003 Report Share Posted March 27, 2003 my guess would be 7 if it were intercooled. the LS1 and LT1 both have ratio's than the LQ9 (LQ9=10.08:1, LS1=10.1:1, LT1=10.5:1) and there are more of them supercharged in stock form than worth counting. fuel quality and programming will be the main issue. my choice though isn't the whipple, but is the magnacharger. Link to comment Share on other sites More sharing options...
dcairns Posted March 27, 2003 Author Report Share Posted March 27, 2003 Whipple says they are running 5 lbs of boost and getting 470 hp out of the Escalade, so the numbers for the SS should be the same. I am not sure if they were using the wonderful 91 octane gas we have here in CA or not (they are located her in CA, but I am sure creative specmanship is employed whenever possible Quote from Whipple: The way that we are capable of doing it is through timing and sparkcurve. The engine from the Escalade made 470 HP with 5 lbs of boost. We have had to drastically adjust timing to allow the engine and supercharger combination to work properly. The aggressive timing in the computer is how the engine makes its power. We have had to reduce timing and make less power to start making more power. The supercharger made about 40% increase in performance. In order to take it up from there, someone is going to have to figure a way to lower the compression of the LQ9 and replace it with more boost from the supercharger. Something like an extra thick head gasket and pulley swap might do the trick, but I don't know how the computers will respond to modifications like that. Does anyone have the specifications to figure out how thick that head gasket would need to be to lower the compression from 10:1 to 9 or 8 :1. I am just wondering if it would require longer push rods or start causing alignment problems with the intake manifold. As a seat of the pants guess, I would think you could get away with an 1/8 inch spacer, but a 1/4 inch would probably start to be a problem Right now my SS has a smooth acceleration, rather than the kick in the butt acceleration that an F-150 HD has, so I am sure the supercharger will deliver the good kick in the butt I am after Link to comment Share on other sites More sharing options...
RATFINK Posted March 27, 2003 Report Share Posted March 27, 2003 You never want to add a thick head gasket to lower the compression ratio, it will kill your quench and can actually induce detonation even at the lower static ratio. RF Link to comment Share on other sites More sharing options...
dcairns Posted March 27, 2003 Author Report Share Posted March 27, 2003 So it is either a head swap or some major interal changes (pistons or rods). All of which are probably illegal here in CA. Well I am not looking to go beyond the supercharger anytime soon, so I won't worry about it. Link to comment Share on other sites More sharing options...
RATFINK Posted March 28, 2003 Report Share Posted March 28, 2003 Personally I would remachine the combustion chamber to a larger better flowing size and or use a dished piston. ;) Using a shorter rod woulod have the same effect on the quench as using a thicker head gasket. RF Link to comment Share on other sites More sharing options...
variant Posted March 28, 2003 Report Share Posted March 28, 2003 you could use somthing like a aftermarket JE piston with an offset wrist pin I would think... then again... if your going to have the heads off... shiiiiittttttttttttttttttt...... go nuts!! Link to comment Share on other sites More sharing options...
Krambo Posted March 28, 2003 Report Share Posted March 28, 2003 Finally! A very good tech question with tech answers. Keep them flowing! BTW I wouldn't rec. using a thicker gasket to lower the comp. ...waiting for the aftermarket goodies to start being available Link to comment Share on other sites More sharing options...
RATFINK Posted March 29, 2003 Report Share Posted March 29, 2003 you could use somthing like a aftermarket JE piston with an offset wrist pin I would think... then again... if your going to have the heads off... shiiiiittttttttttttttttttt...... go nuts!! That would lower the compression, but you would kill the quench. It would be more likely to detonate even with the lower static compression ratio. The only viable options are using a dished piston, or a larger combustion chamber. RF Link to comment Share on other sites More sharing options...
dcairns Posted March 29, 2003 Author Report Share Posted March 29, 2003 The only viable options are using a dished piston, or a larger combustion chamber. So have you found the part numbers for heads with a larger combustion chamber for us? Seriously, it will be a few years before I will want to start modding that much. The Whipple should keep me happy for a couple of years. At least till the SS is paid for Link to comment Share on other sites More sharing options...
RATFINK Posted March 29, 2003 Report Share Posted March 29, 2003 The correct part number would be MAZAK-CNC. RF ;) Link to comment Share on other sites More sharing options...
zeeohhsix Posted April 11, 2003 Report Share Posted April 11, 2003 first off let me say hello to every one seems like some ford owners are giving others a bad name here well i own both so no biggy to me and personally like the ss looks.my current cars are a 01 zo6 03 lightning and a 02 bmw 325i(wifes car) genral car / truck enthusiast ...been looking around the site ,and see alot on super charges . have any of u considered nitrous used correctly it is very safe alot less expensive as far as hp to dollar and i think it would deffintly benefit the awd being u guys have the traction to launch on a big shot. i think 100 - 150 shot would be safe on the ss trucks may have to pull some timing and run a colder plug cause of the agessive program the ss has but i bet 125 shot would drop 1/4 times close to a full sec.. i currently run a 100 shot on the zo6 have had no problems thus far 6 10lb bottels, and have had it on past cars with no probs. also there is no better feeling than to purge the system onside of the competion Link to comment Share on other sites More sharing options...
Krambo Posted April 11, 2003 Report Share Posted April 11, 2003 ...Love the gas! even put it on my 02 snowmobile (modified NOS kit) makes around 220 HP. The blue NOS bottles would look great in a custom bed. Link to comment Share on other sites More sharing options...
dcairns Posted April 11, 2003 Author Report Share Posted April 11, 2003 I like the supercharger idea because it is my teenage dream fulfillment. A Chevy V8 with a blower... . I have not given much consideration to a centrifugal blower or nitrous for the same reason. I like the power to come on down low, not just full throttle. More fun for daily driving and no bottle to refill, just the gas tank Link to comment Share on other sites More sharing options...
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