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Old 09-25-2013, 12:23 PM   #1
Criag B
 
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Trailing ARM ?

Who makes the best trailing arms for drag racing? Thanks
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Old 09-25-2013, 12:35 PM   #2
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Who makes the best trailing arms for drag racing? Thanks
You could debate that to the end of time but BMR and Pfadt both make a great set. Both are much stronger than stock. The Pfadt set weighs a little less but costs a little more. If you go with BMR make sure to pick up the outer trailing arm bushings as well. They are a separate item. If you have any questions feel free to hit me up.
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Old 09-25-2013, 01:25 PM   #3
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Pfadt BMR and Spohn are all great choices. Personally, I think the Pfadt trailing arm and toe rod package is is a great value. Feel free to call, PM or email me with questions.

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Old 09-25-2013, 01:47 PM   #4
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Thanks for the replies. I do like the quality of the parts I have seen from Pfadt.
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Old 09-25-2013, 02:11 PM   #5
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Who makes the best trailing arms for drag racing? Thanks
Is your 5th Gen a dedicated drag car or street driven weekend warrior?
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Old 09-25-2013, 02:12 PM   #6
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Thanks for the replies. I do like the quality of the parts I have seen from Pfadt.
The quality and engineering of the Pfadt rear arms are second to none.
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Old 09-25-2013, 02:14 PM   #7
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I will say that our BMR trailing arms with spherical bearings (TCA027) and rod ends (TCA033) are going to be stronger than any trailing arm with poly-urethane bushings. With any trailing arm that utilizes poly-urethane bushings the bushings will be the weak point of the arm itself. If you are looking for the strongest trailing arm possible I would put our BMR trailing arm with the spherical bearings against anything out there.

BMR trailing arm with the spherical bearings (TCA027)
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Old 09-25-2013, 03:06 PM   #8
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I will say that our BMR trailing arms with spherical bearings (TCA027) and rod ends (TCA033) are going to be stronger than any trailing arm with poly-urethane bushings. With any trailing arm that utilizes poly-urethane bushings the bushings will be the weak point of the arm itself. If you are looking for the strongest trailing arm possible I would put our BMR trailing arm with the spherical bearings against anything out there.

BMR trailing arm with the spherical bearings (TCA027)
They do look beefy, are they made of Cromemoly?
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Old 09-25-2013, 03:59 PM   #9
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Is your 5th Gen a dedicated drag car or street driven weekend warrior?
I missed this. Just a weekend warrior, I have had it since May and only have 1400 miles on it.
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Old 09-25-2013, 04:06 PM   #10
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They do look beefy, are they made of Cromemoly?
They are actually made of a boxed mild steel. If you are looking for something a little lighter and plenty strong enough to handle anything you are going to throw at it I would look at our BMR trailing arms with the rod ends (TCA033) which are made out of DOM mild steel.

BMR trailing arms with the rod ends (TCA033)
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Old 09-25-2013, 04:18 PM   #11
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I missed this. Just a weekend warrior, I have had it since May and only have 1400 miles on it.
Do your plans include significant RWHP increases or is your goal the best possible launch with OEM power?
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Old 09-25-2013, 05:41 PM   #12
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Do your plans include significant RWHP increases or is your goal the best possible launch with OEM power?
I made 490 RWHP with a cam, heads, LT, and usual bolt on goodies. I just added a ECS kit and meth. I am looking @ 700 or so. I should know by the weekend how much power it makes.
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Old 09-26-2013, 09:35 AM   #13
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I made 490 RWHP with a cam, heads, LT, and usual bolt on goodies. I just added a ECS kit and meth. I am looking @ 700 or so. I should know by the weekend how much power it makes.
With that a mount of power a good set of trailing arms (and more) will definitely be needed to help you get the power to the ground.

It is crazy the amount power these cars make on a regular basis, I remember back about 10 years ago when 500hp was a lot of power.
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Old 09-26-2013, 09:51 PM   #14
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Is anyone making LCAs for the newer style suspensions
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Old 09-26-2013, 10:30 PM   #15
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Is anyone making LCAs for the newer style suspensions
GM does. I think spohn as well
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Old 09-27-2013, 12:46 PM   #16
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Is anyone making LCAs for the newer style suspensions
We are currently working on both non-adjustable and adjustable rear lower control arms that will work with the FE4 style rear sway bars so hopefully we will have something before the end of the year.
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Old 09-27-2013, 12:56 PM   #17
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I made 490 RWHP with a cam, heads, LT, and usual bolt on goodies. I just added a ECS kit and meth. I am looking @ 700 or so. I should know by the weekend how much power it makes.
Your upgrades should start with our EP1201HD sub-frame bushes. All bushings are not created equal.

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PEDDERS



Putnam Park Danny Popp driving the Pedderised L/28.



Use the OEM ZL1 / 1LE toe links. The weak spot for the trailing arm isn't the arm. It is the bushings in the arm and in the rear knuckle. Mot companies make industrial strength arms with a spherical or hard urethane bush and use a split urethane bush on the knuckle / hub. We use a steel jacketed bushing with a sliver of urethane in OEM arm and in the knuckle / hub.

The OEM rear trailing arm bush is great for driving in the 8/10ths range. Pushed to 10/10ths or 11/10ths it allows too much movement creating instability. The increase in stability is enormous. Using a durometer you can see the differences in material hardness. Normally you wouldn't use a durometer to measure the hardness of steel. We did that for illustrative purposes. Both rubber and urethane soften with heat. The amount of heat generated by a 2 ton Camaro with LPE power through the exhaust and rear brakes is enormous. Using Pedders EP7265Z in the knuckle for the trailing arm reduces motion because there is less material and the material that is there is harder than the OE rubber bush.





Getting a good reading on the edge of the bush was problematic. The durometer is 85.







A rear trailing arm can be made of unobtainium and it won't matter of the bush in the knuckle feels like Jello.

Your rear alignment is critical. Toe should be IN 0.10 per side with a Total Toe IN of 0.20. ZERO negative camber gets your tire square down to the track for optimal bite.
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Old 09-27-2013, 04:46 PM   #18
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Thanks for the info. I have already bought the solid rear subframe bushings, just haven't had the time to install them.
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