What do you think of this engine performance upgrade?

[Humdingah]

Ummm...I thought anything over 110 octane was leaded? I'd love to find come 120 octane unleaded fuel...I could safely run 25 lbs. of boost on the turbo 'Busa and the Lightning.

[HUMMERcustoms.com/TAZ]

Really just straight methanol race fuel. You can get custom formulated fuel if you want to pay. I really plan on not running that high of octane I hope just inj. straight methanol or water/methanol mix which ever works better in high daytime temps. The purpose is to cool everything down as much as possible so you do not detonate. 87 octane has more power in it than 100 something octane does. 87 is more volatile than 93 or higher. If all was perfect You would want to run 87 and try to tame it with right inj. mix, timing and just allot of other variables then as much boost as you can. It will just depend on when we start cranking it up a notch at a time during the year playing with the tune and asking Allen for help if we are able to get it ready to go. Plus getting Allen to make small enough pulley to get to boost I want.

If we can make it to the run Allen offered to go along which I will most gladly accept if it is possible. Just hoping to get it to 18 or 20 lbs. of boost for runs. What we set up at home will be base to have to take to run and build on due to temps., altitude, humidity and what ever other variables when you get there. It is a 2 or 3 day deal so you get tuning time and test runs. Same as pro drag racers they tune at ever track starting with a base model that maybe even stored from year before on that track and adjust it. So they show up as much as possible before the races to change tunes.
That is why i hope Allen will get to go and help me since he is use to tuning in the Texas heat. We will even have an old fashion ice bucket with coiled fuel line inside to add dry ice or what ever we feel we may need to cool fuel down even more. Water/meth inj. is choice to help cool air down so you hope you figure it out. Huge balancing act and could blow it up the first test day but, do not plan to push it that hard first year there so i can learn.

Since there is no class for an SUV unless they decide to do it we will run in open class which we have no chance of running 261 mph in a 1 mile trap I think a Toyota Celica set it in 05 maybe a Nissan. Yet as i was told by organizers i would be setting a speed that may draw others to come and try and beat our SUV which could lead to a class. We have a couple of magazines interested in meeting us there so who knows may start a new class the next year. It is still bragging rights to be the fastest 8000lb. SUV speed and time holder at The Texas Mile sanctioned by the same body that does Bonneville salt flat runs and there is another in North Carolina I think. Gives somebody else that wants to bring a full stock interior etc. vehicle with same weight, something to take a shot at and if i get to bring it back the next year hope somebody shows up to compete against. Really to costly of amount of fun but, what else would you want to do leave to the kids?

We are aloud to have pit crews and they do not allow pit passes so maybe some will get to come and help out or hang out as pit crew. I hope it all works out I have been thinking about this and planning it for a year now to do it this fall since we cannot make the early spring runs. Phone calls that kind of stuff trying to figure from them what they want to do with us.

The rest of the time it will be tuned with 10 lbs. and inj. mix and co2 spray set for WOT only just incase some fun shows up.

Dragon every so often has a car club or sometime just local gearheads do some driving on the strip and then go park in a big lot and let people stop and look as most of the rigs are ones that MSA is sponsoring so they show up to support the shop. So we have Dragon's Celica Gt & the H2 there. Then we have sponsors to take H2 to show for so it has to be many things.

Oh if anyone is interested in buying the hotest Celica GT You have ever seen with turbo the works Dragon is thinking of selling it and building something new. This car has so many trophies and just so much WOW it is a 3 head jerk when you walk by it at shows. We have seen people do it. You know the retake looks. I suggest if You would like a tuner in the family also, check this car out as it has been sponsored heavily. I think has been used in web shots and mags more stuff on it than i have ever seen and is classy hi tech no cheese look here. PM Dragon for pics. He completely redid the ride in 06 paint i think. It has no rear seat as it has huge 14" subs built in with more in rear trunk with all the amps, caps and carbon fiber hand laid everywhere. Wish I had more money I want it. Lambo doors and turbo I think I said already. Blue

Hope to add some spice to life and anyone else interested in seeing what an H2 can do! We know they are great off roaders, just a new type of challenge for H2. Thanks to all of those who PM me with support as well as those who do in forum also. I know I'm running on the other edge of what H2 was built for but, it just seems to draw me to see what it could do.

I forgot Dragon had a BUSA he sponsored that ran something over 220hp at the rear wheels and when I stopped keeping up he was just getting started maybe adding nitrous etc. so i do not know where he went with it.

TAZ

[obzidian]

thats a basic heads/cam package with aftermarket dual beehive springs, pushrods, and ported tb/intake. Its expensive considering you can now get a set of the l92 heads, which fit our 6.0L 4.00" bore with no problem and your basically getting a ls7 type of head design to fit our 15* valve angle for under 300.00 a pair.

I have a 410ci motor in my camaro that turns 640rwhp on pump gas through a 6-speed. on a stock cubed, 346, my buddy and i have a heads/cam package that makes 500rwhp and 460rwhp through a 237/242 cam at 114lsa. This car idles great and with the mentioned HPtuners, we turn over 24mpg on the highway, about 18-19 mpg on the street, narrow-band tuned.

Those numbers on that site are crank hp, it would be difficult to make 435rwhp with an auto, unless you locked the converter on the dynojet, that is if the stock 4l60e trans can hold the power and had ONE HELL OF A TUNE AND a 90mm intake and every otherbolt-on available for this motor. Also, the trans is not a very strong... now the 4l80e, which i would of initially put into this rig, is stock rated at 750rwtrq. this trans (4l60e) is rated at 360ish rwtrq. anythig over stock, and your asking for it. (ask me how i know! )

The above mentioned heads, l92, can run you NEW from GM for about 200.00 a pair. A comp cam is about 399.00... ANY cam spec you wish. I would suggest some like a thunderracing cheatR cam, makes gobs of mid-range torque. Now, add the springs, pushrods, a port oil pump... anbd you should be anywhere under the 2500.00 dollar range. Porting a stock TB and intake will yield some more power but not enough... i would get a fast 90mm setup and really step it up.

Combine all of this with an aftermarket stall, like a yank 2500, (retains good towing ability) and you'll trap alot faster and get into the powerband easier without starting from the deadspot under 3k. I would suggest a good trans cooler, to get her temps down... and hope the trans stays together.

NOW, you could go supercharger, which is alot of fun really. Probably the first thing i would do.....but this is where you have some choices. You have the eaton/magnacharger. the (112) is a great blower but will run out of steam on top. They developed a newer blower, (122) which will now allow you to run a 90mm TB and make good power on top. Very noticeable. Than there is the whipple and my favorite, the KB. The Kenne Bell has a great blower that will make huge power over the magnacharger, its intercooled and has less parasitic loss (not much though) than the roots style blowers. (magnacharger)

Than there is the ATI procharger, centi. IT makes great power but its more linear and builds with rpm. You can get a D1sc and push over 20lbs... than you'll make great power. The ATI looks like a turbo, but runs of your accesories. So it has parasitic loss, but less than the roots. Also, you have the undergradeability to make HUGE power with a stock cubes, forged motor.

just some ideas... i have been in the lsx performance game for years now and basically, what we have in the H2 is a LS1 with a vortec intake and other misc. changes. Swap the intake, and you'll be hard pressed to tell the difference asethetically. You can have a built 408ci shortblock, for $3500-4k.. and that will make tons of power down low. Add a blower to that with a lower C.R. of 9.1:1 (est) and you should be able to get good power output of one of these motors. And if you get board, well, you can now have a lsx type of shortblock that can go as high as 480ci or and even 500ci SMALL BLOCK CHEVY.

MEth injection will help with a magnascharger, should be able to extend the limits of pump gas... but FWIW, i have seen 346ci ls1's make 900rwhp+ on pump gas at around 15psi or more.

[obzidian]

TAZ:

do you have a dynosheet of your H2? I really dont want to start a war or anythn, and its shown that you do know your stuff, but i believe that 550hp is at the crank for at 6/8lbs, its would be hard stretched to produce that much power, with our AWD system, and a auto trans at that. I think that at the wheels, you would be close to 400rwhp than 500rwhp. These trucks have a really high drivetrain frictional loss percentage. I cannot confirm it but i beleive it is higher than 20%, much higher.

Also, i believe you might want to actually lower the cr to go higher boost level, these motors dont need like it for pump gas, that is, if your set on C16, than you can go a bit higher though your tune has to be DEAD ONE to avoid any boom-boom!! For pump, you should be fine to make as much power as you want. 1000rwhp is alot, especially through our drivetrain, and i also dont think that 112 blower is gonna cut it. AGAIN, PLEASE DONT TAKE THIS AS A PUNCH IN THE GUT, its just some observations i have made with what i've gathered with my own car(s).

HPtuners is a great tool and anyone looking at doing a handheld should reconsider and get a laptop pcm tuning/scanning tool. Like you mentioned, with a wideband, well, you can tune just about anything, add that 3bas SD tune capability, and your pretty much set for whatever you can through at these week trans!!

I would like to see more of an emphasize towards the performance aspect of an H2.. maybe we can all put our heads together and get one in the 10's hahaha now that would the day, wouldn't it?!