Gains from ditching tru trac and going spool?
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From: Chicago area
Gains from ditching tru trac and going spool? Putting in a light weight spool and taking out the tru trac. Just curious to what gains I might see at the tire and at the track.
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From: Harford Co. Maryland
Approximately 50# rotating mass..........maybe up to .03 ????
I will also recommend that you keep an eye on lugnut torque. They will come loose once in a while due to the back and forth twisting action of the axles.
I will also recommend that you keep an eye on lugnut torque. They will come loose once in a while due to the back and forth twisting action of the axles.
I had a gear driven limited slip on my black street/turbo car.
I have a spool on my new car.
It isn't an apples to apples comparison at all, but the spool is noticeable in reverse with the wheels turned.
I couldn't give you an honest answer at the track aside from both tires spin when it doesn't hook!
I have a spool on my new car.
It isn't an apples to apples comparison at all, but the spool is noticeable in reverse with the wheels turned.
I couldn't give you an honest answer at the track aside from both tires spin when it doesn't hook!
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On The Tree
Joined: Sep 2011
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From: Georgetown TX.
I did the swap on mine, and saw no difference. I pulled it down to do a gear change, and found metal. The Detroit try trac was eating itself up, but not enough to make the car act up. I ordered a Moser steel spool. They advised against the aluminum one. Said the splines wear out faster. Witch makes sense.
I only notice mine now when I try and turn, especially in reverse. Make sure your rear tires are the same roll out or within 1/2" of each other. The M/T's I just got are just over 3/4 off and the car is wanting to pull, I'm trying to stretch the smaller one this weekend.
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From: Chicago area
I didnt think it would be much of a gain, but still help in the long run. I figured maybe .05ish and 5-10rwhp increase. Im really doing it to make sure the car stays straight and doesnt break.
I was (stuck) running 11.1x 11.25ish for months, same setup for almost 2 years worked it down form mid/high11's. Truetrac was I think acting up. changed it out to a spool (same gears and tires) saved 33.8pounds, The diffs, diff lol weight (s60) And my stock 60K mile rear shocks for some used summit 3ways from a local. When 10.8x 1st past, a week later (just put the spool in I think was the day before) It was getting fall time and the air was better, but it was still during the daytime. But not was comparing 90* air 150 track temp, 2800+ DA in AUG daytime. to 50* oct night 500DA.
I was really hopping for just a 10.99 was shocked to see it running 10.8x. I remember too, on the street car car felt slower with the spool, And I normally dont trust how the car feels (as in this case) After pulling some gears I didn't have to steer the car as much, it wasn't as wild (fun?) it drove straighter. The big ET pickup makes since, the shortest distance between 2 points is a strait line I dont know if everyone will see a result like that, but thats really how it went for me
I was really hopping for just a 10.99 was shocked to see it running 10.8x. I remember too, on the street car car felt slower with the spool, And I normally dont trust how the car feels (as in this case) After pulling some gears I didn't have to steer the car as much, it wasn't as wild (fun?) it drove straighter. The big ET pickup makes since, the shortest distance between 2 points is a strait line
I dont know if everyone will see a result like that, but thats really how it went for me