Vss question
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Junior Member
Joined: Feb 2014
Posts: 61
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From: Wappingers falls ny
Car: 1985 iroc z
Engine: Crate 350
Transmission: T56
Axle/Gears: 3:24
Vss question
Does anyone know the pulse per mile comming out of the vss on a 94 t56? Im pretty sure its 17 pulses per driveshaft revolution but whats that equal to pulse per mile?
Joined: Sep 2005
Posts: 27,867
Likes: 2,428
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Vss question
Calculate it...
MEASURE the tire radius (distance from center of wheel to ground), DO NOT even begin to hallucinate that the "trade size" printed on the side is anything remotely near "accurate". Also, don't use the "gear ratio"; use the tooth counts. Again, more accurate.
2 x pi x radius = how far the wheel rolls in one rev; 5280' x 12 (" per foot), divided by that, = how many wheel revs per mile; that, times 41 ÷ 12 = how many times the drive shaft turns per mile.
A 3rd grader can do it.
MEASURE the tire radius (distance from center of wheel to ground), DO NOT even begin to hallucinate that the "trade size" printed on the side is anything remotely near "accurate". Also, don't use the "gear ratio"; use the tooth counts. Again, more accurate.
2 x pi x radius = how far the wheel rolls in one rev; 5280' x 12 (" per foot), divided by that, = how many wheel revs per mile; that, times 41 ÷ 12 = how many times the drive shaft turns per mile.
A 3rd grader can do it.
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