PI Headswap Before/After Results at the Track
05-20-2008, 08:01 AM
#12
6th Gear Member
Join Date: Feb 2006
Location: Virginia
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RE: PI Headswap Before/After Results at the Track
Yeah, He was on a 1/8th mile track not a 1/4mile. Those times are still slow even for 1/8th mile standards but he has a good comparison in quickness.
ORIGINAL: max427
you went 12.30's bone stock? that seems a little ridiculously fast. Am i missing something?
you went 12.30's bone stock? that seems a little ridiculously fast. Am i missing something?
05-20-2008, 08:39 AM
#13
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Join Date: Mar 2008
Location: Ohio
Posts: 2,994
RE: PI Headswap Before/After Results at the Track
ORIGINAL: 5spd GT
I actually have ran a higher MPH with my 2000 GT, which was 89.47 if I recall.
It feels right at the same power. With some more practice with it, I could increase the MPH.
I just pulled right off the highway, went in-line, and ran it. No burnout, or special tricks.
I would say it puts you right at a 99-04 GT. The no-tune sort of makes of for the increased compression difference.
I did the PI Headswap last summer, but I just finally decided to take it to the track. I do not race my daily driver much.
I actually have ran a higher MPH with my 2000 GT, which was 89.47 if I recall.
It feels right at the same power. With some more practice with it, I could increase the MPH.
I just pulled right off the highway, went in-line, and ran it. No burnout, or special tricks.
I would say it puts you right at a 99-04 GT. The no-tune sort of makes of for the increased compression difference.
I did the PI Headswap last summer, but I just finally decided to take it to the track. I do not race my daily driver much.
ok so if this is only for the 1/8 mile, what would be normal mph for the quarter for a 99-04?
05-20-2008, 11:28 AM
#14
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Location: Eskimo Village, Indiana *No Igloo*
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RE: PI Headswap Before/After Results at the Track
I would have expected more improvement than that for 1 reason.
Look at his original 60', and then his new 60'. That alone was 2/10ths of a second, and yet he only gained 4/10ths in the eighth mile? I know it sounds goofy to say 'only 4/10ths' but still...
I dont know, maybe I expected a bit more cause of the obviously better launch.
Look at his original 60', and then his new 60'. That alone was 2/10ths of a second, and yet he only gained 4/10ths in the eighth mile? I know it sounds goofy to say 'only 4/10ths' but still...
I dont know, maybe I expected a bit more cause of the obviously better launch.
05-20-2008, 01:00 PM
#16
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Join Date: Aug 2006
Location: same as you.
Posts: 3,287
RE: PI Headswap Before/After Results at the Track
ORIGINAL: 72MachOne99GT
I would have expected more improvement than that for 1 reason.
Look at his original 60', and then his new 60'. That alone was 2/10ths of a second, and yet he only gained 4/10ths in the eighth mile? I know it sounds goofy to say 'only 4/10ths' but still...
I dont know, maybe I expected a bit more cause of the obviously better launch.
I would have expected more improvement than that for 1 reason.
Look at his original 60', and then his new 60'. That alone was 2/10ths of a second, and yet he only gained 4/10ths in the eighth mile? I know it sounds goofy to say 'only 4/10ths' but still...
I dont know, maybe I expected a bit more cause of the obviously better launch.
05-20-2008, 01:06 PM
#17
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Thread Starter
Join Date: Sep 2007
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Posts: 798
RE: PI Headswap Before/After Results at the Track
More power = Better 60 ft. (assuming traction).
A few guys have missed the point of this thread. Just look at the MPH, not the ET.
I am not an ET guy, but I look at MPH. I know I could go back and run better.
They are stock tires and bad track prep and one run. Any questions?
Everything is completely stock on the engine. The only thing added was 02 heads, cams, and intake.
Does anyone ever think that the track elevation may come into play?
A few guys have missed the point of this thread. Just look at the MPH, not the ET.
I am not an ET guy, but I look at MPH. I know I could go back and run better.
They are stock tires and bad track prep and one run. Any questions?
Everything is completely stock on the engine. The only thing added was 02 heads, cams, and intake.
Does anyone ever think that the track elevation may come into play?
05-20-2008, 01:16 PM
#18
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Join Date: Dec 2004
Location: Eskimo Village, Indiana *No Igloo*
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RE: PI Headswap Before/After Results at the Track
1.More power = Better 60 ft. (assuming traction).
2.A few guys have missed the point of this thread. Just look at the MPH, not the ET.
3.I am not an ET guy, but I look at MPH. I know I could go back and run better.
4.They are stock tires and bad track prep and one run.
5.Any questions?
2.A few guys have missed the point of this thread. Just look at the MPH, not the ET.
3.I am not an ET guy, but I look at MPH. I know I could go back and run better.
4.They are stock tires and bad track prep and one run.
5.Any questions?
2. I did not know the point of the thread was to look at the ET improvement, most people don't give 2 ****s about a trap and worry about the E.T.
3. See above..lol
4. Excuses
5. Yes. Why don't you care about the ET at all? Anyone can go out and mash the gas to find out what they're trap speed is.
05-20-2008, 02:19 PM
#19
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Join Date: Sep 2007
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Posts: 798
RE: PI Headswap Before/After Results at the Track
ORIGINAL: 72MachOne99GT
1. You're no where near that power level. Better driving was 100% responsible for that 60' improvement, not the power increase.
2. I did not know the point of the thread was to look at the ET improvement, most people don't give 2 ****s about a trap and worry about the E.T.
3. See above..lol
4. Excuses
5. Yes. Why don't you care about the ET at all? Anyone can go out and mash the gas to find out what they're trap speed is.
1. You're no where near that power level. Better driving was 100% responsible for that 60' improvement, not the power increase.
2. I did not know the point of the thread was to look at the ET improvement, most people don't give 2 ****s about a trap and worry about the E.T.
3. See above..lol
4. Excuses
5. Yes. Why don't you care about the ET at all? Anyone can go out and mash the gas to find out what they're trap speed is.
Atmospheric weather conditions, track prep, old vs. new tires, clutch condition, are just a few factors that can change. You think this is my first merry-go-round at the track? LOL.
A scenario assuming same drivers, track, etc.
Car A runs 11.3 @ 120 MPH. Car B runs 11.5 @ 126 MPH.
Which car has more power? B.
Which car has more traction? A.
Not anyone can go mash the pedal. Trap speed shows the power to weight ratio.
I have raced guys on the street (stupid) and track (smart) where they would outlaunch me, because they had slicks/suspension.
Low and behold, come the 1/8 mile, I was pulling on them. Which car has more power?
Throw a pair of stickies on a ride and watch the MPH hardly change, but the ET drops dramatically.
Take two cars with the same driver, track, engine, suspension, etc. Give car A slicks and give car B stock tires.
Car A runs faster, but car B has the same power.
Was car A faster because of a better driver? No, it was due to traction.
Many PI swaps are done with bolt-ons already on the 4.6L engines. This will exaggerate the actual gains from the parts alone.
If you would like to PM me, I can give you my number and we can talk about it. I like conversing with other stangers.
Thanks.
