I need a list of mods to be done to a stock mint condition 90 RS. Please list mods and estimated HP/ET improvement. My friend got her a$$ handed to her by a 94-95 mustang GT and I am trying to help and am not all that familiar with the TBI used on these cars, but do have extensive mechanic/drag racing experience.

 

Open element, Headers, Hi flow cat, 3" cat back (these should always be the first mods).....this should get the car into the high 15s, im currently running a best of 15.97 with these mods in my 90 RS

 

oh yeah, also do a search, there are 100s possibly 1000s of answers to this very question, most of the time you dont even have to ask the question because it has already been answered a dozen times.
And welcome the boards!!!

 

I hope that you have extensive cash/credit access to go with that experience because you are going to need it once you do a search and see the mods needed.

 

Perfect suggestion. I would just like to add <b>GEARS</b>. Some 3.42 or 3.73 gears with <a href="http://www.slponline.com/view_product.asp?PARTNUMBER=64501T">$99 SLP posi </a> and with the open element and <a href="https://www.thirdgen.org/newdesign/tech/ultimatetbi.shtml">ultimate TBI mods</a> will get you very close to a Mustang GT. With the FULL exhaust replacement you should be able to take a stock Mustang GT but if anything has been done to the stang then you will still get beat. It just won't be as ugly. A LT1 cam, edelbrock intake and higher stall torque converter will put you over the top. But exhaust must be done before adding cam and intake.

 

I guess I forgot to mention that this is a TOUGH stang. A 5spd car, loud, lopes like a big dog, not sure but I think it has gears, and lord knows what else. I have heard the guy is lookin into aftermarket heads and intake, so the current one's must be stock. But this is one of those cars that probably hauled when it WAS stock. I have heard that it went mid 9's in the 1/8 when he first got it before he did anything to it, and since then i has chopped a second off those times. I was just wondering if there was anything we could do to make the RS at least not look like it was tied to a post. Didn't really expect to beat this car, just wanted to look a little better losing. The guy is pretty cool though, so losing with dignity won't be a problem.And do this with stock heads, cam, and no N2O.

 

If it's possible anyway.

 

on top of the gears and exhaust, if u really want to add some power to the 305, get an LT1 cam, Edelbrock Performer intake, and some World S/R torquer heads, then with a higher stall torque converter you should be able to do more than just keep up with him.

 

Combine the mods in my sig with headers and traction (posi, lca's etc) and see what you get

 

Check out the link in my signature, it's a database for what people have done to their RS's and what the results are.

(I've been waiting to make a post like this )

 

Hey Tony, update me on the site

Toronto Motorsports Park -Cayuga
2:32 PM
13/Oct/2002
Temp 60 F
Humidity 70% (Was raining in the morning)

R/T 0.694
60 2.232
330 6.429
1/8 9.902
MPH 71.01
1000 12.891
1/4 15.414
MPH 89.48

Latest Additions are 1.6 Roller Tip Rockers and a pre cat cutout, the cutout shaved off 0.2 tenths, the rockers another 0.2 tenths and an extra mph. If I had >90mph, times were 15.45+...

 

Once you add heads, cam and intake to the list, you might as add WINALDL to it too and an adjustable fuel pressure regulator and gauge or you will not get close to running at its potential.