JKentws6

Hey all,
I have a 99 ws6 m6. I have the motor at the machine shop now. Planning on doing forged internals. So far I have: 1 3/4 long tubes, off road you pipe, cat back, ls6 intake slp lid, 42 lb injectors, ms4 cam, ls6 stage 1 heads. Probably forgetting a few more small things.

Basically I would like to know what rotating assembly to go with. With or without forged crank. Do I use factory head gaskets? I already have arp head bolts. I'd like to safely shoot a 150 shot. Car will be driven on the street as well as at the track (hard). Will be doing a Ford 9 soon with 3.90s.

Also, I don't know much about tuning software needed. Does the necessary equipment usually come with the kit. I worry about all the tuning stuff because I keep hearing people say " just don't miss a gear, it'll blow for sure"

any input appreciated. sponsor and vendors welcome to show me what you have and suggest for my setup. I'm not made of money but I want to do things right the first time. Thanks in advance.

slammedsam

iTrader: (1)

What engine? LS1? Most stock cranks will hold upwards of 1000 horse, rods and pistons should do well for you. And depending on what engine you have alot of people just use an oem mls gasket.

JKentws6

LS1 Gen 3. It's not the original motor but I bought it new from GM as a stock replacement about 3 years ago. So I'm assuming it's the Gen 3

NitrousExpress

iTrader: (4)

Shouldn't really be an issue adding 150 to your current setup. If you are going to do rods/pistons I would go with a set Wiseco pistons and they also sell rods. Definitely wouldn't be too worried about an aftermarket crank if you are only looking to hit 150 on it.

We use HP tuners on all of our stuff, and you could use the lnc-2000 lingenfelter box to pull timing on the fly, and only when the nitrous system is armed, that way the car isn't a pig on motor.

We make an RPM window switch that you wire into a coil to prevent you from hurting anything when you miss a shift. It allows you to set a minimum and maximum RPM for the nitrous to come on and cut off at. Our's also controls TPS/WOT.

http://www.nitrousexpress.com/18959-...-required.html

Here is a link to our plate system that will make for a clean install and get the job done performance wise.

http://www.nitrousexpress.com/20935-...ut-bottle.html

If you have anymore questions, feel free to ask.

Thanks,
Garrett

JKentws6

Very thorough thank you. I'm still on stock fuel pump.... is that going to be an issue? Do you also agree to use factory head gaskets? And plugs? If I later decided to spray 200, would that require a different tune? Thanks

NitrousExpress

iTrader: (4)

Definitely want to change the plugs out to a BR7EF, gap at .034 thousandths. I would look into a Boost a Pump or new drop in unit being that the car has a cam and other mods. We have sprayed 200hp on a stock LS1. Stock though haha!

Factory head gaskets should be fine, if you have to replace them I would go with some LS9 head gaskets.

Thanks,
Garrett

JKentws6

Is the lingenfelter box to have two tunes? One for N/A and one for spray? I have the engine apart now so I have to put new head gaskets either way. Would it be safe to say the ls9 gaskets would hold the pressure better than stock ls1, so go with ls9 anyway? Thanks

HISS

iTrader: (52)

The way the box works is it will only come on when the nitrous is armed. It piggybacks the ignition system to pull timing based on what you have it set up to pull. This eliminates the need to reflash or retune for nitrous.

NitrousExpress

iTrader: (4)

What he said. The LS9 gasket is probably the best OEM one you can get for boost/nitrous.

Thanks,
Garrett

JKentws6

You guys have been great, thanks
As for the fuel booster, what would u recommend? I saw two different in line ones on the NX website for different ratings but they said the boost limits not hp. So would I need the 500 or 700 hp. And the regulator it says I would need, is that included in the NitrousExpress kit or do I get that separately? Thanks for all your help.

NitrousExpress

iTrader: (4)

http://www.nitrousexpress.com/15004-...-methanol.html

This is the one you need if you plan on running factory pressure.

You could use this one but you will have to get low pressure jetting and run it on 8-10lb's flowing pressure seperate of the car system.

http://www.nitrousexpress.com/15003-...-gasoline.html

If you are going to run a seperate bung out of the factory tank and mount the pump inline, either one of those would work for what you are doing, and as far as a regulator for that, the Aeromotive 13301 would be the 55psi one, and our standard billet regulator you can run at 8-10lbs like I said.

http://www.nitrousexpress.com/15952-...ure-gauge.html

Honestly, for 150, you may be able to just pull it off the fuel rail as long as you have a big enough fuel pump in the tank.

Thanks,
Garrett

JKentws6

Ok sorry if I'm annoying, i just want to make sure i understand correctly. So areyou saying i could avoid these standalones or boosters if i just put a stronger fuel pump in place of the factory fuel pump in the gas tank? I already have an access panel cut to access pump so wouldn't take much to replace if that would be simpler. If that is the case what fuel pump should i go with?

69gto96z

iTrader: (13)

I have a Walbro 255 with the hotwire kit, and pull a 150 off the rail.

NitrousExpress

iTrader: (4)

Yes, for 100 or 150 that is fine.

Thanks,
Garrett

JKentws6

OK so I got the call from my machine shop and now have to order my pistons. I called and they asked what compression I wanted to run. What is a good base line for pistons and rods for my cam now and the nitrous when I get it. I was told wiseco -3.2cc and callies rods. What compression should I be aiming for? Thanks.

NitrousExpress

iTrader: (4)

Depends on what your goals are for the car, street car or track only, as well as what type of fuel you are willing to run. We have guys running 15:1 compression and a fair amount of nitrous. Something like that would have to run on alcohol or race fuel all the time. If you are looking for something streetable, I would shoot for anywhere from 10:5:1 to 12:1, that will still take a pretty good amount of nitrous on 93 octane with appropriate tuning. You can run nitrous with higher compression you will just have to run higher octane fuel and tune accordingly.

You could also enrich it with race fuel through the standalone setup and that will help alot when spraying.

Thanks,
Garrett