I went to Test & Tune with my new set up yesterday. This past winter I had new gears, posi,axles,sub frames,alum. drive shaft,basically from the rear up to the transmission redone.
I was hoping on breaking 14 seconds but found that I couldn't break 15!!!
I just have some questions. If anyone could help it would be great!!!!!
1) Tire Pressure.
I planned on running 25lbs. on the rear of my Nitto Drag Radials. I started talking to a person who had a Cobra with Nitto's also. He told me to knock the pressure down to 15 because I would just spin 1st and 2nd. So I knocked them down to 18. It seemed to hook real well.
My question is,Nitto's are not a wrinkle wall, should I run that low of a pressure? Could the rim be spinning within the tire at that pressure?
I have 35lbs. in the fronts, BFG G-force Sports.
I drove in the water box, wet the tires,Spun out of the box, line locked and heated them up,rolled out of my burn out.
Should I drive around the water box and back in? I don't know if the fronts might be dragging the water with them. 2) I launched at 3 or 4 thousand, I didn't dump the clutch, I eased it out quickly. Does that sound like a good palce to launch?
I'm shifting anywhere from 4 to 5 thousand. Does that sound right? 3)My timing is only advance at 10
I plan on advancing it. I read in a book I have, "Mustang 5.0 Projects"
that Neil Van Oppre made his 87 LX go from 14's to 12's. That seems extreme for just a timing advance!! What do you think?
Here is my best time slip out of four runs.
Reaction........ 0.125
60'................ 1.946
330'.............. 6.125
MPH1............ 69.93
660'.............. 9.596
990'.............. 12.595
MPH2............ 89.58
1320'............ 15.076
7 MPH Headwind / Temp. 50.9
I beat a 69 Cougar on this run!!!!!!!
Should I be running better than this?
Any tuning and driving suggestions would be great!!!
Thanks
Here is my current set up. 1993 GT Mustang / Stock 302 EFI / Edelbrock 5.0 Upper and Lower Intake / 75mm Throttle Body / C&L Cold Air w/76mm Mass Air / K&N Filter / Electric Fan / BBK Underdrive Pulley's / A.C. Removed / BBK Headers / Flowmaster / H-Pipe / T-5 / Alum. Driveshaft / 3.73 Gears / Eaton H.D. Posi / Moser 31 Spline Axles/ Subframe Connectors / Line Lock / Driveshaft Loop / B&M Short Throw Shifter / 16" Chrome Cobra Wheels / Nitto Drag Radials Rear / BFG G-Force Sport Front / Racing Upper and Lower Control Arms / Lakewood Adjustable Drag Shocks
Your 60' is decent for those tires, so I would say your launch technique is fine for now. With all those go fast parts you should be able to run much more timing, I'd try 14* and maybe more. Make sure your using only high octane fuel when you advance the timing or pinging (detonation) could result. A trip to a dyno can also help you dail in your A/F ratio for optimum performance. Do you have an adjustable fuel pressure regulator?
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DHG #01434 Bullitt - full JLT intake, MGW shifter, Accel coils (I wish I had 4.10s, o/r H, tune)
Black 89 LX(the drag car) best 8.75 at 80 mph in the 1/8
97 Mountaineer V8 AWD
Nice times early on in the run:thumbsup Your 60' and 330' times should put you in line for a low 14 second pass but you are falling off by the 990' mark.
Sorry, I can't offer any advice on a '93 5.0L. I'm just cutting my teath on a stock 2006 GT. With a similar 330' times to yours, I've turned a 14.03 but the 3valve 4.6L runs a different peak RPM curve to a 5.0L.
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2006 Legend Lime Mustang GT/Manual Trans/some mods(tired of updating) 13.257 @ 109.36 on stock 18 fanblades and stock BGFs wth CAI, tune, UDPs
1967 Lime Gold Galaxie 500 XL/390 4bbl/Toploader
1966 Mustang Coupe/bare metal (rebuild in process-slowly)/engine&trans TBD
I don't have an adjustable fuel pressure regulator. What would that do and are they pretty easy to install? I always run 93 octane Sunoco. I am definately going to advance the timing. How about a MSD Blaster Coil? Would that improve anything?
It does seem like I launch hard but then fall off after.
I have been thinking, maybe my shifting points are too high from 2nd to 3rd
and 3rd to 4th. I'm shifting at 4 to 5 thousand rpms. I'm at about 5 thousand in 4th when I hit the traps. I guess a dyno is the next step if It doesn't improve.
Thanks for all the help!!
With the mods you have the engine may need more fuel pressure than the stock regulator is giving it. A good tuner can diagnose this for you. You also might be shifting too soon, try to shift at a given rpm each shift, maybe 5300-5600 rpm. Good luck!
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DHG #01434 Bullitt - full JLT intake, MGW shifter, Accel coils (I wish I had 4.10s, o/r H, tune)
Black 89 LX(the drag car) best 8.75 at 80 mph in the 1/8
97 Mountaineer V8 AWD
Neil Van Oppre made his 87 LX go from 14's to 12's. That seems extreme for just a timing advance!! What do you think?
Not possible!
Sound to me you might be running rich when under a high load in the upper RPM range. You might try just adjusting the fuel pressure, but that's hit or miss. Get a Kirban INHO and easy as spit to install.
As serious as your car/parts are, I'd say a tuner with data logging capability should be your next 'mod.' That and a broad band A/F meter.
Why in the hell are you launching just at 4k. Rev that thing up to 5k and let it rip. Soon as you leave it should put you back in your seat and while your falling back shift to second. You have bigger axles. Are you running stock heads? I didn't see it in your info of the car. A friend of mine ran 13.00 in his 87 gt. Just a little hillbilly port job on the heads, trick flow uppper and lower, and the normal bolt ons. Stock short block with 160,000 on it. My 95 vert. ran 13.50's with windsor jr's, holley upper and lower, and a few bolt ons. I pulled 1.7's- 1.8's all day long with stock suspension and stock axles. My car weighs 3850lbs also.
An adjustable fuel pressure regulator and bump that timing it will help alot. It's to bad your so far away. There are a couple excellent places are here that cane tune with the best of them. Modular depot and there is Pauls Automotive Engineering. Both are always in the stang mags
Wow, thats a big improvement! What was your mph in the 1/8 and 1/4? How about your 60'....
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DHG #01434 Bullitt - full JLT intake, MGW shifter, Accel coils (I wish I had 4.10s, o/r H, tune)
Black 89 LX(the drag car) best 8.75 at 80 mph in the 1/8
97 Mountaineer V8 AWD
Yeah, it seemed your engine wasnt pulling very hard at the end of the powerband. Where did you shift, you should try around 5500 and see if it makes its quicker IMO.
Can't Break 15 Seconds 
