matt93lsx

Ok guys, i have done a 100 searches....narrowing my build down now but need some help from more experienced carbed guys!

building an LQ4 at the machine shop now for a clean, cam bearings and overbore of .030
I have bought the gmpp intake,valve cover and L92 head set up
looking for 9 second passes and the most street-ability.
cam selection.....should i just have one custom ground?
nitrous or turbo?
with the cost of the headers for a fox swap and a good nitrous kit i could purchase the on3 kit for about the same money.
i feel like i could make a nitrous build a little more sstreetable, but could be wrong there. also, stroking the motor is an option as well because im changing the rods and pistons anyway.
Fuel demands will be about the same as well as the carb other than the blow thru mods.

thanks for the help
3000 lb mustang coupe,th350, 3.55 gear, caged, fully tubular suspension front and rear converter will be bought depending on the set up

thanks Matt

newschool72

iTrader: (12)

A nitrous setup will be a little more straight forward, but to go 9s with nitrous , you will need a healthy cam. A turbo setup can be built to be more street friendly and still run the number (or much quicker!) but will require more tinkering to get right and not melt a piston or 7. Both have the potential to destroy many dollars for one small mistake. Proceed with extreme caution when working up a basic tune, more so on the turbo setup, because there is at least a 100 folks that have done your exact nitrous setup ( no matter which setup you choose) so the basic setup will be easier to find . Turbo stuff is done a lot less so will require more tinkering to map out.

matt93lsx

yeah, doesnt sound like i will have too much trouble running 9's with either set up. the bottom end will be pretty bullet proof, heads should work well, i should be able to get away with a lil milder cam with them and still run good numbers.

been doing more research and several of the low buck builds are flying on motor in much heavier cars....impressive!

ZONES89RS

iTrader: (25)

I have not done a turbo because of the cost for a fuel system, carb? Turbo and all the plumbing headache. So nitrous is the simple answer.

matt93lsx

i am basically playing a numbers game. there are a couple imports around here that street race that run pretty darn well. i am going to have to get this combo in the 9.50 range to stay in front of them. that being said, im basically looking for a tried and true build i can duplicate, not wast money twice and run over top a few civics. most guys around here already hate the hybrid build but you cant beat the mustang for chassis and weight and the ls builds crazy power, is smooth and reliable.

bmeyer40

iTrader: (5)

The turbo setup can be built to be alot more streetable especially since you wont need a huge converter. That said I am going the n2o route because that is what I prefer with a carb. If I was injected then id be turbo.

speedtigger

iTrader: (16)

I can speak to the nitrous side of the equation.

The engine in my car with a 200 shot will run mid to low 9s in your #3000 setup at 140-145 MPH. My car has gone 10.04 @ 133 at #3780. If you put my power numbers in the drag race calculator for a #3000 raceweight, you get 9.30s @ 144 MPH. http://www.hotrodpitstop.com/tool.php

My engine is pretty mild:
LQ9
PRC CNC ported LS6 heads
226/234 .598"/.612" on 110 +3
Victor Jr.
950 HP Holley
Cirlce D 4c (3800) Converter
3.90 gears

Another good thing about nitrous builds are that you generally use a tighter stall converter. So, it will not be too sloppy to cruise around on the street. My converter is about as high as I would go and still run a 200 shot. My car might actually be quicker on nitrous with a slightly tighter converter.

If it were mine and I were starting with a forged 6.0 and square port heads, I would be thinking 11-11.5:1, a cam something like 231/244 on 112+4, 1 7/8" headers, 950 Quick Fuel Q series carb, 3000-3500 RPM nitrous converter and some 3.55 gears. This with a 250 shot would be a rocket.

matt93lsx

speedtigger, i watched the video of your car running and i love it, that car is so smooth. i realize the bench racing is just that but i am liking what i hear about the potential of a simple set up with a tight converter, i could really care less how the car runs on the motor, if i do a nitrous set up which is most likely. i want it to be a monster on the gas, whatever it runs on the motor doesnt concern me......

so, 9.30s huh )))

matt93lsx

talked to my engine builder today...
going with a 408, l92 heads,gmpp intake, bout 11.1 compression
going to have a custom nitrous cam ground for the motor as well...think im going with the guys at Legend Racing for that.
what has to be done to the lq4 block as far as clearancing for the stroker kit?

Do you think 9s is possible with this set up in my mustang? I have heard everything from piece of cake to it may be possible.....

speedtigger

iTrader: (16)

Definitely piece of cake.

streetknight2

iTrader: (10)

Can't speak to the 1/4 mile times, but my LS Fox has a LQ9 with LS3 heads and has been 5.90's in the 1/8 on a 100 shot at 3050#

windmill

iTrader: (4)

I know some of the weight can affect ets,, but speedtigger u saying that your motor will run 5.3's in my car?

speedtigger

iTrader: (16)

What's that thing weigh? You can plug my HP numbers and your weight into this calculator:

http://www.hotrodpitstop.com/tool.php

According to that calculator, My car makes 520 on the motor and 700 on the nitrous. Those are not flyweel or WHP numbers per se, the calculator tends to spit out a number somewhere in between. But it is fine for this comparison.

Oh, I see in your signature that it is 2440. So, if you put 2600 with driver at 700hp in the calculator, you get 8.95 @ 151. For you 1/8th mile guys, the calculator says: 5.64. Man, you light guys have it made.

windmill

iTrader: (4)

with me 2740 with me im 300lbs,,, but people say a tenth per 100 lbs not always true. u said yours is 3700 or so,,, that's 1000 lbs

motor mine says 519 flywheel hp---467 rear wheel
nos 150 671 flywheel 604 rear wheel

matt93lsx

seems like some pretty simple combos running some great numbers. i just dont want to spend money twice, whatever my car runs in will run that at its full 3000-3100 lb race weight, will be a street car first then a race car. im going to build a 408 mess w the timing on the street to keep it pump friendly. hopefully, make the right choices cam wise to have a nitrous monster. got a few things to iron out but im getting there, after all its just another lx mustang with a 6.0 . the info is abound on here, great builds in other body type cars.
my car is complete, i have gotten my fuel system, most of the electronics, transmission etc
thanks for the responses guys, each of you have very nice cars, nice builds and the finished products run very well....exactly what im trying to do and i realize bench racing is just that, i think im on a good path though and will be impressed with the finished product