Rear End Snubber Extensions for Drag Racing

[Jagdpanzer]

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:

http://i540.photobucket.com/albums/gg333/pwasinger/165-6533_IMG.jpg

http://i540.photobucket.com/albums/gg333/pwasinger/165-6527_IMG.jpg

http://i540.photobucket.com/albums/gg333/pwasinger/165-6530_IMG.jpg

[Aurora40]

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?

[Jagdpanzer]

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".

[rhipsher]

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.

[ZZZZZR1]

Phil,

Car look a little dirty... Maybe we should have a detail class for you!

Great add on and very nice track times!

:cheers:

David

[LGAFF]

What mods do you have?

[sammy]

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 ??

[Jagdpanzer]

What mods do you have?

Stock motor, Fidanza Al flywheel, 4.10s, SW headers, MF metalic cats, Corsa, HAT chip.

[LGAFF]

You need to port your intake:)

[Jagdpanzer]

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 ??

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.

[flyin ryan]

Your on the absolute right track with the 'Snubber'. Anything a person can do to limit the 'Pro-Squat' built into these cars will help. I did something similar around 10 years ago on my Stingray, turned the car around, was the best thing I ever came up with. I ended up getting it to 60 foot in that configuration 1.325, best. Lots of 1.33's, 1.34's & 1.35's though, off the foot brake.

[sammy]

did you make your own line lock or buy one from someone .sure would be nice not to have to pop the clutch in the water box and stand on the brakes .

[Jagdpanzer]

did you make your own line lock or buy one from someone .sure would be nice not to have to pop the clutch in the water box and stand on the brakes .

Used a Hurst PN 174 5000 solenoid valve installed in the ABS compartment with a neat install kit from Marc Haibeck:
http://www.zr1specialist.com/HAT%20Web/products/line%20lock.htm

http://www.zr1specialist.com/HAT%20Web/products/solenoid%20valve.JPG

[sammy]

wow thankyou for the info , it will sure make my burnouts tons easier , now if i only could find a track where the elevation isnt 4700 ft .(top gun in fernly ):rolleyes:

[FU]

Rear End Snubber Extensions for Drag Racing

Excellent idea !

[RICKYRJ1]

Nice Job Phil! We need to get a WAZOO track day together. I must say that car looks pretty clean to have spent a day at the track :mrgreen: Glad to see you didn't have any mishaps this time around. :cheers:

[Jagdpanzer]

Just stay away from the mud puddles

[HAWAIIZR-1]

Thanks for sharing Phil!!! :handshak: