Which is better for drag racing?Shorter Chassis Mnt Tq Arm or stock length relocated?
12-12-2007, 09:21 AM
#1
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Which is better for drag racing?Shorter Chassis Mnt Tq Arm or stock length relocated? As you can see what do you think is better for drag racing and better 60ft? A chassis mount like the spohn or umi or a stock length relocated with one of the relocation kits?? Any input is much appreciated. Thanks
Brian
Brian
12-12-2007, 11:01 AM
#4
Adjusting the torque arm and intersection has a lot to do with a car wheel standing or not.
Take a 4 link car, the bars are only 18-20" you move the intersection a few holes and put it on the bumper, move the intersection in another spot it hangs the tires 5" and shoots out like a rocket.
Also a lot of FAST stock suspension cars have trouble running really long torque arms and end up going to mid length or shorter styles. Not every car is the same, the length of the torque arm isn't the main factor in a car wheel standing, it's all about how the car is setup.
If you look at all the cars madman has done that have his torque arm that are hauling ***, they are not all on the bumper and 90% are faster than what we race.
Take a 4 link car, the bars are only 18-20" you move the intersection a few holes and put it on the bumper, move the intersection in another spot it hangs the tires 5" and shoots out like a rocket.
Also a lot of FAST stock suspension cars have trouble running really long torque arms and end up going to mid length or shorter styles. Not every car is the same, the length of the torque arm isn't the main factor in a car wheel standing, it's all about how the car is setup.
If you look at all the cars madman has done that have his torque arm that are hauling ***, they are not all on the bumper and 90% are faster than what we race.
12-12-2007, 12:24 PM
#5
I have a one of custom TQ arm and it's short, on a 1.42 60 ft it maybe just maybe lifted the tires 1-2". I am no expert but I've seen the success that people had locally and just copied it , kinda. Transmission Physicians of Tampa Fl built it for me!
12-12-2007, 04:22 PM
#6
vmax1500 had some custom made long torque arm and ended up switching it out to a shorter BMR. here is the link:
https://ls1tech.com/forums/showthrea...653589&page=15
https://ls1tech.com/forums/showthrea...653589&page=15
12-12-2007, 06:43 PM
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From what I have been told a short torque arm for the 700 hp and less or a longer one if going over 800hp. Depends on what you have availible when leaving the line.
The chassis shop that is building my cage and helping set up the suspension wants me to run a longer torque arm. I have pulled 1.48 60'ft with about 550 hp foot braking it. There was more in it too.
The chassis shop that is building my cage and helping set up the suspension wants me to run a longer torque arm. I have pulled 1.48 60'ft with about 550 hp foot braking it. There was more in it too.
12-12-2007, 08:48 PM
#12
On my third gen car, I had the stock length relocated arm on my car and it would pull the front tires. Switched to a short style (jegs) and the car wouldn't do it anymore, but it planted the rear tires harder and made the rear end seperate from the body (like it should)
Think about it... You have a long lever (long torque arm) its going to be able to lift the front of the car easier, and putting the mounting point further away from the rear axle means less direct (downward force) on the axle.
With a short arm, you have a shorter lever, which cannot lift the front end as easily, but its relative close location to rear end, means it can apply more direct, downward force.
I think the reason people say they see short torque arm cars going on the bumper is because the folks that spend $700+ on a torque arm such as Madman's have more money in their engines and are simply making enough power to actually put the car on the bumper, and they dont have the suspension tune completely worked out.
My .02
Think about it... You have a long lever (long torque arm) its going to be able to lift the front of the car easier, and putting the mounting point further away from the rear axle means less direct (downward force) on the axle.
With a short arm, you have a shorter lever, which cannot lift the front end as easily, but its relative close location to rear end, means it can apply more direct, downward force.
I think the reason people say they see short torque arm cars going on the bumper is because the folks that spend $700+ on a torque arm such as Madman's have more money in their engines and are simply making enough power to actually put the car on the bumper, and they dont have the suspension tune completely worked out.
My .02
12-12-2007, 09:01 PM
#13
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Take a broom stick and lift it from the nearest end with one hand then repeat it with your hand further out on the stick. The further out you lift the stick the less the effort it takes.
The longer the TA the further forward your placing the lift point and the more the front will want to lift. The more power you have off the line the more you need to move your lift point to the rear of the car so it makes it harder to lift the nose of the car. The shorter the arm the more it will shock the tires at launch also.
This is the way it was explained to me, if im wrong someone will correct me.
The longer the TA the further forward your placing the lift point and the more the front will want to lift. The more power you have off the line the more you need to move your lift point to the rear of the car so it makes it harder to lift the nose of the car. The shorter the arm the more it will shock the tires at launch also.
This is the way it was explained to me, if im wrong someone will correct me.
12-12-2007, 09:26 PM
#14
Take a broom stick and lift it from the nearest end with one hand then repeat it with your hand further out on the stick. The further out you lift the stick the less the effort it takes.
The longer the TA the further forward your placing the lift point and the more the front will want to lift. The more power you have off the line the more you need to move your lift point to the rear of the car so it makes it harder to lift the nose of the car. The shorter the arm the more it will shock the tires at launch also.
This is the way it was explained to me, if im wrong someone will correct me.
The longer the TA the further forward your placing the lift point and the more the front will want to lift. The more power you have off the line the more you need to move your lift point to the rear of the car so it makes it harder to lift the nose of the car. The shorter the arm the more it will shock the tires at launch also.
This is the way it was explained to me, if im wrong someone will correct me.
12-12-2007, 09:43 PM
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for some reason these discussions turn to well this guy said........and that guy said thats all wrong, so keep your head down now that you started it lol.
I have a long (stock length) arm, and i can put the car on the bumper at will, i can also do 1.2's in the 60 ft, on the rear tires, the fronts usually wait awhile to come down, i can also foot brake it in the 1.3's . so i am not really positive that confirms anybodys statements or throws them out the window, but thats whats under my car, which by the way is a 3rd gen, but the rear suspension is very close. in any case the torque arm needs to be taken off the trans, thats asking for trouble
I have a long (stock length) arm, and i can put the car on the bumper at will, i can also do 1.2's in the 60 ft, on the rear tires, the fronts usually wait awhile to come down, i can also foot brake it in the 1.3's . so i am not really positive that confirms anybodys statements or throws them out the window, but thats whats under my car, which by the way is a 3rd gen, but the rear suspension is very close. in any case the torque arm needs to be taken off the trans, thats asking for trouble
12-13-2007, 09:05 PM
#19
12-13-2007, 09:21 PM
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hmm, metal image of pukeing gerbil lol. I was saying what happens every time torque arms come up is sometimes um..well crazy at times. not to hijack the thread but i would like to shorten mine, but then everyone will say it will wheely more, so i usually point out that then ladder bar cars should flip over backwards.
regardless of that, there is no one answer that is the best for all cars, and what works one way in freds car might work different in barneys car. most of the aftermarket t/a's are pretty good, and most are stronger than stock. without knowing his car or goals i dont think anyone can tell him the best one, but with enough research i think he can find one that fits his budget and abilities to install.
regardless of that, there is no one answer that is the best for all cars, and what works one way in freds car might work different in barneys car. most of the aftermarket t/a's are pretty good, and most are stronger than stock. without knowing his car or goals i dont think anyone can tell him the best one, but with enough research i think he can find one that fits his budget and abilities to install.