analize my et,s - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 8 Old 06-08-2008, 12:03 PM Thread Starter
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analize my et,s

I have a factory five Cobra replica with a CHP 347 Edl. rpm heads and intake 274 Comp cam etc. The car went 11.70 117 on a 1.79 60 first time I had it out. I recently went to a rpmII intake and a set of M/T 26x10x15 slicks. My 60 went to 1.57 and my et went to 11.62 while my mph dropped to 115.6. What happened? The temps were almost identical on both days, if anything the air was better the second time out. I played with the timing and it seemed to like 36* total the best. Any Ideas?


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post #2 of 8 Old 06-08-2008, 12:50 PM
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The added traction probably slowed the mph, but picked up et.


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post #3 of 8 Old 06-08-2008, 03:16 PM Thread Starter
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Yeah I agree but dont you think 2 tenths quicker on my 60ft would net me more than 8 hundreths on my 1/4 et?

Chris Dolt
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post #4 of 8 Old 06-08-2008, 04:09 PM
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Chris, Were you using the same 26x10 mt slicks for both times out?

'93 Cobra 10.26 @ 129.08 1.39 sixty foot
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post #5 of 8 Old 06-08-2008, 06:11 PM
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Quote:
Originally Posted by Chris Dolt View Post
Yeah I agree but dont you think 2 tenths quicker on my 60ft would net me more than 8 hundreths on my 1/4 et?

I would have thought it would have picked up a little more in et but there are many factors involved.

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post #6 of 8 Old 06-08-2008, 07:04 PM Thread Starter
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No, the other time I was running BFG DRs 275 50 15.

Chris Dolt
FFR Cobra replica CHP 347, ported Edelbrock RPMs with port matched intake, comp 274hr cam, FMS 373 etc, all work performed by me, including body and paint.
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post #7 of 8 Old 06-08-2008, 08:46 PM
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Slicks grow on the top end and will slow you down some.

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post #8 of 8 Old 06-08-2008, 11:27 PM
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drag radials will mph higher.I lost 7mph when I put slicks on.
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