Hey guys with the motor in myu sig converting it to tpi and useing the stock prom and prob a smaller cam so it will run can i reach like a 13.5-13.9 or no? also i wil be puttin 3:73's in the car. thanks

 

3.73's would help you with your setup now but would hurt you with the tpi. If you go tpi stick with the 3.27's. As for quarter mile times... i'd gues you should be in that range, but it would depend on how well those heads flow. Also with the cam, stick to less than 218 @ .050 intake duration and hope everything runs good. If everything works out good from what i've heard of other peoples mods you should be mid to high 13's. You've got a decent carb setup so why not just try to tune it good, put in the 3.73's and see what you can do with it?

 

I would really think you should be in the 13s already. If not, it's probably your heads that are hurting you. Just switching over to TPI will probably not put you in the 13s if you're not already there. A different cam may help. I actually think the 3.73s will help some, but not as much as you think.

 

Oh yea, cars well into the 13's now. I am just not to happy with having a carbed everyday driver. it gets to be annoying after a while and the gas milage is a bare. I was just wondering if I swtich to TPI could I still stay in the 13's. Fuel injection has so many upsides to everyday driving that its worth it to me to go a little slower and have the perks. thanks for the input guys

 

It's a big hassle, and you'd need to make a few changes to maintain the times you're seeing now. This is a situation where I'd start looking for a used stealthram/ecu setup, or something better. Then you'd keep your times or even improve.