12.5s, what do I need to do to get there?

tvanlant said:

I have a 99 GT 5 speed with PI heads. I currently ran a 13.6 at 100mph. I want to run a 12.5. Can you list what I need to do to my car to run this? Here is what I already have done to my car:

Cobra IRS from a 99 Cobra
4.10 Gears
Magnaflow Exhaust
H-pipe
Gutted cats
Underdrive Pullies
K&N induction kit
Sachs Clutch


Thanks, Tyler

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droptopponynj said:

a 99 with PI heads....interesting.
get a blower.

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hotmustang331 said:

The only way your gonna get 12.5s N/A is by getting some MPH stg 3 race heads, MPH custom cams, forged SB with 10.1-1 compression (RPMs should be in the 7200RPMS range...I wouldnt do that on the stock SB), and LTs, O/R X, electric waterpump, upper plenum, 75MM TB, and a decent plastic CAI. (it will help more on a motor like that since it will be pulling ALOT more air then stock)....

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cadde300 said:

It depends how you run. If you race from a 40 or 50 mph roll what is the point, to see who has more horsepower. Who cares. Races should be from a stop and show who is the better driver. You can have 500 hp and still run in the 13's...The ability to drive a car is a mod that is highly overlooked. It is the best mod a car can have. Whats the point of racing if your not going to see what the car can do. You will not know how fast a car is launching at 2k on street tires and granny shifting all the way down the track. In reality, 400rwhp should be nothing short of an 11 sec car.

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hotmustang331 said:

So you dont do any highway racing huh? or are you gonna stop a SRT-4 and tell him, hey im too much of a pansy to race on the highway cuz I know you will kill me so lets race from a stop since I have 315 DRs and full suspension and you have FWD on street tires. I dont like racing from a stop on the street, as there is to many things that can happen (oil, gravel ect), racing from a 60 roll, REALLY tells the tell of who has a faster car IMO. Not racing a car off the line, he has street tires, you have slicks....you run a 12.9 @ 104 and he runs a 13.1 @ 110....you even everything up, you will get killed...he asks for a run on te highway, what are you gonna say? Driver is one thing (ie BOTH cars have slicks, so it really comes down to power and driver) and real power is another.

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hotmustang331 said:

Im sorry, but to me, a REAL mid-low 12 second car is about the trap, and real power....not launching at 6500RPMS and pull a 12.5 @ 102 LOL. If that what he wants then yea you dont need all that, but you will still get RAPED on the highway buy a lightly modded LS1. My way, you would run EASY low 12s and murder all but the fastest LS1s on the highway. i just worded that wrong...YOU CAN HIT 12s ON THE STOCK HEADS AND INTAKE. You just got to rev like mad and launch at HIGH rpms and risk tearing up things....But any blower 2V will still rip you a new one one the highway, and have all his interior and stock tires. N/A is a waste IMO, sure you can pull 12s but you WILL NOT do it at full weight...DK your raceweight is just over 3100 pounds, our race weight is over 3500pounds. Otherwise with fullweight, you wouldnt be much faster than anyone else. Sorry, but gutting a car and running skinnys is just a track queen, and on the street in street trim you wont run like that, espically at a race weight of 3500. My time was run at full weight and on my street tires...my time is what i REALLY run on the street.

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hotmustang331 said:

DK your raceweight is just over 3100 pounds, our race weight is over 3500pounds. Otherwise with fullweight, you wouldnt be much faster than anyone else. Sorry, but gutting a car and running skinnys is just a track queen, and on the street in street trim you wont run like that, espically at a race weight of 3500. My time was run at full weight and on my street tires...my time is what i REALLY run on the street.

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