Well I would post this in the drag section but being turbo'd, I figured with all the fast cars in here, someone with a similar set-up could help me out.
So far I have made 5 passes since i switched from T56 to Th400. I am happy with the improvements but know there is a lot more in the car.

On two different days with very similar temp/humidity (80-85degrees and 60-65% humidity). Best ET so far has been a 10.44 and best mph was 138.25. Four of the five runs had 60's from 1.74 to 1.78.....the 10.44 was on a 1.62.
So on the footbrake it went 1.75. On the TB with the pedal to the floor, 60's stayed the same or got worse with the car spinning through 1st gear (26" ET Streets, 17.5psi warm). My car makes 10psi almost instantly on the TB when i floor it, rpm's are around 4500-4800. The 1.62 was doing what MIGHTYMOUSE suggested in that i throttle the car on the TB and launch with less boost, which was about 5psi around 4000rpm. The problem on that run was i forgot to floor it when i let off the TB button so the car slightly fell on it's face.
My stall is a trans specialties 3000-3300rpm stall but it seems i am pushing through it or is this normal?
The car now has 3.08 gears in it, stock cut rear springs (previous owner did this), stock shocks, BMR LCA's with relo brkts, SPOHN body mount TA (-2degrees), BMR panhard, boxed subframes. Front sway bar removed, stock struts with the ground pounder coil over sleeves...I don't know the specs on the springs as the car had these when i bought it.

So, what should be my next mod...two-step? Qa1 coilovers? rear drag bar? Which would make the most difference on a 50/50 street/strip car?
I've got video of the runs which i am trying to get on the net so you can see that the car really doesn't lift up, squat or anything on the launch so I think suspension is where i need to spend the money but want some opinions before i start throwing money at it.

My bad on the long post but thanks for any input.
-Jarrod

 

28'' tires is the next mod

 

First thing I would do is get a 2 step, then you can dial the launch in better with what you have. After that some better tires. 26" ET streets arent the best tire to get a good 60' with a 9 second capable stock suspension turbo car, set of 28" ET drags on a pretty stock suspension with LCA relocation brackets and the fron sway bar off should get you where you want to be the quickest.

 

I have to agree with kp. By the 2-step. Set it at 4000, stomp the gas, release T/B, you'll see a world of difference. For tires, try one of the M/T ET Street Drag Radials. The shop's Mustang did 1.33 on a set of these tires, 275's. You could go bigger, 295 or 325's, believe all of them are 28" but different track patch.

Good luck.

David

 

I agree with what kp said also..2 step will give you a consistent launch pass after pass. The 28 inch tire will give you more sidewall and more rollout so you otta have your 9 sec pass when you do those two things.. Good luck and keep us posted..

 

his car is too low for 28's. jarrod maybe 27" hoosiers would fit? his 26's are a few years old and done i say.

the 2 step would make for consistency but you have the opportunity to 60 just as good with what you have now. which i would say is 1.50's or so.. at least at Richmond. more than that you'll have to get into race car stuff.. honestly it looked to me like the air conditioning stuff over the front end was liftinging the *** end up some.

 

I"d get a 2step, and get some new 27" Hoosiers. You could try hooking 10psi on some new 27's, might happen, might be a little too much.

 

....don't hate

 

Thanks for all the replies.
Ok so looks like I will be buying some tires this week...and work on getting a 2-step....crappy thing is i had a Harlan one on the car last year but sold it after breaking my T56...that little black box is worth it's weight in gold now....dammit.
I don't have adj lowr LCA's but my rearend seems to be in the center of the wheel well and I have a set of stock V-6 springs...think it will work? I hate to have to raise the car way up but will do it for a 9sec pass what are my odds of having to also buy a new set of LCA's though with the 28's?
Navy David: I like the idea of some 325 DR's on the prostars...and anything sub 1.5 would be just super...but how well was that stang's suspension set-up to cut those 60's?
haha....yea maybe you are on to something....I finally had to add a 12oz can of 134a to it....I think it pushed me over the edge. Call me a pansy but i don't like to be hot....gotta have that a/c

 

You will need adjustable LCAs with 28" tires, and a big hammer. The 27" QTPs probably wouldnt need any beating.

You need LCA relocation brackets also if the car is lowered, its must have thing and wont affect the ride at all but it will help with the launch a ton.

 

OK...maybe I will just go with the 27" qtp's then. For the record, I do have lca reloc brkts now and they're in the lowest (most aggressive) position.

Thanks again for your input KP.

 

The stang's suspension is all stock location, but with all aftermarket parts. I guess I should have taken some pictures of it, but good god those cars are ugly The stang is just one bad *** street car - he drives it every chance he gets - I'd bet 100 miles a weekend.

No one in your area has a set of tires/wheels similar to the ones you want? Once your decision is made, no turning back - at least until you sell the ones you just bought (I have a set of M/T 30x10.5x15S and Hoosier 30x10.5x15R in the garage taking up room ).

David

 

oh btw jarrod you can get the qtp in 2 compounds, get the one for the automatic cars of course..