1/4 times in my Mach1 w/ 04 Cobra IRS

[gaazuremach1]

OK guys I am building this car for Autocross and open track but I took it to SCMC's fall track day to see how she would still handle the quarter. So here are some of my slips. I had a really hard time hooking up. Goodyear Eagle F1's are not very good for dragracing.

This was my best run of the day. Bad wheel hop and traction led to the high 60' time.

This was my next best run of the day.

Here were 2 other 13sec passes.

 

[BlackMachWon]

Saw this over on the Registry as well.

I only ran a best of 104.5 mph in my Mach, so maybe the other runs you ran back to back when it was really hot?

The 1/8 mph is low also on those runs. Weird.
Had you ran the car before the IRS swap for comparisons sake?

Congrats anyhow and nice lookin car :beer:

 

[gaazuremach1]

Originally posted by BlackMachWon
Saw this over on the Registry as well.

I only ran a best of 104.5 mph in my Mach, so maybe the other runs you ran back to back when it was really hot?

The 1/8 mph is low also on those runs. Weird.
Had you ran the car before the IRS swap for comparisons sake?

Congrats anyhow and nice lookin car :beer:

Thanks for the comments.

Yes I ran it once at Silver Dollar Raceway in Reynolds, GA. I don't remember all the stats but I do remember

1.90--------60'
13.216-----1/4 ET
106.2-------1/4 MPH

The car was bone stock and I dropped the tire pressure on the stock radials down to 18psi. I also remember that it was real cold that night, abnormally so, about 55 degrees.

 

[BlackMachWon]

Your 'before' runs look strong.

Not sure what to say.
The IRS is heavier for sure, but not that much.

If that's the only difference before and after then maybe there is some issue with the swap or diff itself?:shrug:

104 to 106 mph difference could be attributable to conditions, different track, extra weight, good vs poor run, but not sure about the other low mph runs.

 

[Machinator]

Yea those low mph runs are sure weird considering you were still deep in the 13's.

 

[dru440]

yo uwere letting off early

 

[o3SnakeBite]

Those 96mph traps are extremely low! How did you trap 104 after traping 96?