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Dragstrip and Launch Techniques Discussion 1/4 mile, 1/8 mile, launch discussions.

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Old 05-11-2011, 03:49 PM   #1
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Exclamation Upgrade axels or suspension first?

This past weekend I was at my first drag strip (pics in my profile) but I did NOT run my car at all. I bought this 2010 2SS/RS LS3 and baby it like you wouldn't believe. It is my first sports car, my first real new car and my baby I was scared of running it because I know that there are issues with snapping axels and other rear end components and to be honest I'm scared of breaking something haha. I knew I wasn't going to run it and was fine with it, but after that day wrapped up... I wish I would have... looked like so much fun!!!

My "question" is what have some other Camaro owners done to overcome the fear of the "wheel hop" that can lead to so many problems. I have done searching and have read many threads about upgrading axels or rear suspension parts or even whole kits. I know that doing new axels will then just make that stronger but everything else still "weak" and that suspension kits can reduce wheel hop as well etc... etc...

Do any of you have some advice on some routes with upgrades and personal experiences as to what has helped with feeling more comfortable launching the car?

And because I have an earlier model 2010 (no rear-assist sensors) does that make me more prone to these issues?

Thanks!
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Old 05-11-2011, 03:56 PM   #2
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I'd validate your tranny's output shaft.. I've seen people complain about those snapping on the earlier builds..

I have upgraded axles, PFADT solid sub frame mounts and trailing arms -- but, since I'm still on the PZ0s, I'm not looking at too much improvement in traction other than less wheel hop (which is what I wanted) and a little better rear alignment and such.. Though, once I do put drag radials on it, i'll be in much better odds with not breaking something.. My axles came free with my S/C -- so, that was a nice bonus.

Honestly -- being as stock as you are.. Just don't dump the clutch at the line or put slicks/drag radials on.. I can't promise you'll never break something (that's always a risk) -- but, you're not "on edge".. Also, if you even think you're experiencing wheel hop, get out of the throttle immediately.. Even stock you'll tear something up by pushing through wheel hop. I'd do suspension first, you'll get more parts there than the 1500+ you'll spend on axles.
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Old 05-11-2011, 03:56 PM   #3
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I would look into upgrading your suspension some first. A stock vehicle shouldn't snap the axles unless you are launching pretty hard. We recomend you get the suspension handled add some power and then get the axles taken care of. Unless you plan on being at the track every other day. We carry BMR products and offer free shipping, check it out.
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Old 05-11-2011, 04:21 PM   #4
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I would look into upgrading your suspension some first. A stock vehicle shouldn't snap the axles unless you are launching pretty hard. We recomend you get the suspension handled add some power and then get the axles taken care of. Unless you plan on being at the track every other day. We carry BMR products and offer free shipping, check it out.
Which part of the suspension would you start with, if I can ask you to be more precise.
thankyou
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Old 05-11-2011, 04:31 PM   #5
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Trailing arms and bushings, subframe bushings, and differential bushings are where I'd start.
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Old 05-11-2011, 04:31 PM   #6
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Which part of the suspension would you start with, if I can ask you to be more precise.
thankyou
Sub-frame bushings. Depending on your horsepower goals, the inserts should be fine. Between the inserts and some trailing arms, wheel hop at stock or close to stock power levels should be manageable. I've done the inserts, waiting to see if trailing arms will be needed.
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Old 05-11-2011, 06:09 PM   #7
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Okay! Bushings..everyone seems to be on the same page. Could you explain to me what they will do compare to the oem?

Also another question; how would you fix the nose dive when you release tha gaz pedal on the top end of the rpms in 3rd gear?
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Old 05-11-2011, 07:19 PM   #8
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If your stock I doubt you will break anything.. if it wheel hops get off the gas..

But to eliminate wheel hop like everyone said replace the rear bushings to cradle, dif, and suspension components
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Old 05-11-2011, 07:44 PM   #9
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Okay! Bushings..everyone seems to be on the same page. Could you explain to me what they will do compare to the oem?

Also another question; how would you fix the nose dive when you release tha gaz pedal on the top end of the rpms in 3rd gear?
They stiffen up the car so the rear end doesn't bounce around with all the slop in the stock bushings.

Push in the clutch pedal.
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Old 05-11-2011, 11:04 PM   #10
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Originally Posted by Mikamaro View Post
Okay! Bushings..everyone seems to be on the same page. Could you explain to me what they will do compare to the oem?

Also another question; how would you fix the nose dive when you release tha gaz pedal on the top end of the rpms in 3rd gear?

GM's stock bushings are rubber and flex a ton! This creates body roll and flex in the suspension. Flex will cause wheel hop! BMR bushings are polyurethane and will not flew. They will stiffen your ride up some but it's a small price to pay for wicked launches and handling like your on rails.
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Old 05-12-2011, 08:23 AM   #11
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should I just worry about the rear bushings or get a complete kit for both front and rear?
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Old 05-12-2011, 08:31 AM   #12
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should I just worry about the rear bushings or get a complete kit for both front and rear?
If you worried about over handling do the front. If your worried about launching without wheel hop, do the rear.
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Old 05-12-2011, 09:11 AM   #13
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If you worried about over handling do the front. If your worried about launching without wheel hop, do the rear.
So the BK030 Rear Cradle Kit and BK021 Rear Suspension Kit would be a good choice to improve launching and hopefully lessen the chance of wheel hop? What would be the pros/cons if I did the Complete Pro Kit over just doing the 2 Rear Kits.

Also, are there any major differences between the BMR street and pro kits?
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Old 05-12-2011, 09:28 AM   #14
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Check out this article from our blog.

Curing Camaro Wheel Hop

It explains what causes wheel hop and what upgrades help eliminate it.
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Old 05-12-2011, 09:34 AM   #15
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Originally Posted by jmart53 View Post
So the BK030 Rear Cradle Kit and BK021 Rear Suspension Kit would be a good choice to improve launching and hopefully lessen the chance of wheel hop? What would be the pros/cons if I did the Complete Pro Kit over just doing the 2 Rear Kits.

Also, are there any major differences between the BMR street and pro kits?
The BMR Pro bushings are stiffer than the Street bushings. Their name indicates their intended us. The Street bushings are a good option for tightening things up for street applications and the Pro bushings are for more aggressive applications. A stiffer bushing obviously performs better but will transmit more NVH (noise, vibration, harmonics) into the chassis. There isn't much to be afraid of with the sub frame bushing, go as solid as you can on those (Pfadt solid mounts are ideal but not cheap), but you have to be careful with the rear differential bushings. Depending on how your rear end was set up from the factory you can end up with gear whine if you go too stiff which isn't pleasant for street applications.

It doesn't sound like you are trying to build a race car, just trying to make some common sense upgrades so you will feel more comfortable driving more aggressively. I would recommend BMR BK024 to firm up the sub frame, BK001 for the rear differential, BK006 for the trailing arm bushings, and TCA026 trailing arms. That should help a lot without degrading ride quality. Feel free to shoot me a PM if you have any questions.
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Old 05-12-2011, 11:29 AM   #16
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It explains a lot of questions I had, I think changing the Arm will be my first modification for getting better results in Autocrossing...
Thank you guys
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