06-27-2010 | #1 |
Join Date: Apr 2007
Location: Northern VA
Posts: 2,661
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Rear End Snubber Extensions for Drag Racing
Went to the drag strip Saturday morning to put few runs on the new Center Force clutch I installed recently. Also tried out a pair of 2.25" snubber extensions to limit the rear end downward movement so the spindles might have better chance of surviving this time out. Happy to report both the clutch and snubber extensions worked great. The clutch engagement was much smoother coming off the line than with the privious kevlar clutch and the rear end did not squat like before. Best run was 12.41 at 114 mph with a 1.86 sixty launching a 2400-2500 rpm. Could have tried launching a little harder but did not want to risk busting another spindle as I had a function to attend latter that day. Was running on 315/35R17 MT ET Street Radials at 17 psi. Here are some pics of the snubber extensions:
Last edited by Jagdpanzer; 06-27-2010 at 06:57 PM. |
06-27-2010 | #2 |
Join Date: May 2005
Location: Leesburg, VA
Posts: 2,713
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Re: Rear End Snubber Extensions for Drag Racing
Looks good! Saw Neat on CF do a write-up on that, it was interesting. Did you install it at the track? If not, was the ride rough on the way there?
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Bob Saveland Former owner of #2517 [IMG]http://a.random-image.net/aurora40/vette.jpg[/img] |
06-27-2010 | #3 |
Join Date: Apr 2007
Location: Northern VA
Posts: 2,661
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Re: Rear End Snubber Extensions for Drag Racing
I installed them at the track. Only takes a few minutes. Don't have to take the wheel off, just jack the side up about 4".
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06-27-2010 | #4 |
Join Date: Aug 2008
Location: Houston 90 Red ZR-1
Posts: 2,320
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Re: Rear End Snubber Extensions for Drag Racing
That's a great 1/4 mile time. Mine squats hard like that also at the drag strip. I'll have 2 give those a try. Cannot wait to try this new Spec stage 3+ clutch I installed a few monthes ago. Spec recommends you brake it in for 500 miles before hard launches so I'm trying to be a good boy.
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06-27-2010 | #5 |
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Join Date: Oct 2006
Location: MD
Posts: 3,690
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Re: Rear End Snubber Extensions for Drag Racing
Phil,
Car look a little dirty... Maybe we should have a detail class for you! Great add on and very nice track times! David |
06-27-2010 | #6 |
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Rear End Snubber Extensions for Drag Racing
What mods do you have?
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
06-27-2010 | #7 |
Join Date: Jun 2010
Location: back in lone pine
Posts: 591
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Re: Rear End Snubber Extensions for Drag Racing
did you measure the air gap after the install ? if so what was it . nice 60 ft time . did you do a good burn out ??
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06-27-2010 | #8 |
Join Date: Apr 2007
Location: Northern VA
Posts: 2,661
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Re: Rear End Snubber Extensions for Drag Racing
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06-27-2010 | #9 |
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Rear End Snubber Extensions for Drag Racing
You need to port your intake
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
06-27-2010 | #10 |
Join Date: Apr 2007
Location: Northern VA
Posts: 2,661
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Re: Rear End Snubber Extensions for Drag Racing
With it setting on level ground air gap is around 1/4" to the knuckle. I do a moderate line-lock burnout. Spin them in first gear at around 3-4k until I see some white smoke appear in the driver side outside mirror then let it go. I had no problem hooking up this time out. It was a hot day, around 93-95 degrees and high humitity.
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