You may not want to work on your own car, don't have the tools, or place, and if that's the case then ignore this post...
You can get a GT PI car in the 12's. More on that later.
I have a stock compression aluminum block PI out of an 04' Explorer. I bought it as a new crate motor. My only weight savings is the block, aluminum drive shaft, and sometimes I take out the spare tire, jack, and 15lb nitrous bottle (almost full) that I don't use because I've been too lazy to get a nitrous tune. Most of the time I leave the junk in the trunk to keep weight over the back tires since my local 1/8 mile isn’t sticky on most Friday night events.
The mods that count are not really adding much power, but they are:
The PI motor of course (this is a stick shift car with FRPP HD KC clutch kit)
BBK shorty headers
MAC o/r ProChamber
MAC flowpath catback
FRPP 3:73 gears
BBK CAI
BBK 75MM TB
Pro-Flow 87mm maf for stock 19lb hr injectors (got it mainly for the chrome to match the CAI, but also to remove the center divide)
Taylor 10.5mm wires (probably doesn't add any power)
SCT Xcal2 with timing bumped for 93 pump, rear O2's off, and adjusted for the PI motor and mods.
I've run a 8.74 at almost 82mph with a 2.04 60ft in the 1/8 and I've run a 13.58 @ 103.36 with a 2.08 60ft in the 1/4 on stock 17's and stock factory Goodyear gatorbacks.
No suspension tricks. I even have non-drag-friendly BBK specific rate springs on the car. All runs in the 1/4 I made were on around a 1/2 tank of gas in June heat and humidity.
I know I can do better with more time behind the wheel and more cool downs between runs. You can ask anyone who has been at the track with me, that I hot lap my car when I go. I hardly ever park it. When we had Tennesspeed day at Beech Bend, later in the day, there were maybe 4 to 6 cars in front of me at a time, and sometimes less. I would go down the ¼ and come right back to the line and run again.
And if I do DR's or slicks, suspension, and a built axel, I'm 100% positive I'd be in the high 12's.So if you did the same exact mods I did, and add the tires, suspension, and built axel, I know you could hit high 12’s in a stick car. Heck, a tube K member, A arms, coilovers, light weight seats, and aluminum flywheel would help, too! It doesn’t always have to be power adding mods to go fast. Proper suspension and weight savings can go a long way.
I’m going to prove this by next summer.
A local board member had an 03 Saleen S281 n/a car and he got in the 12’s… here is a post from the board on his 12sec run…
Well considering it was drizzling the whole time and got rained out after 4 passes I'm very pleased.
60ft---1.688 :naughty:
1/8th---8.073 (so close to 7.9's look out chad :lol: )
MPH----83.64
1/4-----12.814
MPH-----104.17
For only 270rwhp and completely stock Saleen suspension I'm happy.
I know the car has 7.9's and 12.7's in it the way it sits. I ran 3 back to back 12.8's. I need some control arms!!!
Probably about 3250 without me(230) Race weight should be close to 3450-3500 depending on fuel.
So there is a formula for 12’s, but a stock rear may crap out sooner or later. He later got the rear built. I can’t recall what his best ever pass was.