4x4 Traction
03-29-2010, 03:53 PM
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4x4 Traction
Has anyone seen this sport truck article?
If anyone has experience with this modification, can you share how it is engineered?
http://www.sporttruck.com/featuredve..._427ci_v8.html
Says he's from Baytown TX
Interesting article on traction in a Silverado, 600 horsepower 2006 Corvette LS7 427ci V-8 / 90mm intake and heads ported and polished / custom camshaft with .239 intake and .268 exhaust lift @.050 inch with a 116 degree centerline / Kooks 1 7/8-inch headers / Aeromotive A1000 electric fuel pump / Speedtech dry nitrous and plate nitrous systems (275 HP shot)
Rather than run slicks, Paco swapped in a 4x4 system taken from an '08 Chevy Silverado Z-71. Four-wheel-drive on a lowered truck-that's what we were wondering. According to Paco, he engages the automatic system using an MSD timer that keeps the four wheels working for approximately two seconds during holeshots and then switches to two-wheel-drive mode once the truck gains traction. The system eats up a bit of power due to parasitic losses but more than makes up for it by keeping the tires from spinning obnoxiously while the competition takes off
If anyone has experience with this modification, can you share how it is engineered?
http://www.sporttruck.com/featuredve..._427ci_v8.html
Says he's from Baytown TX
Interesting article on traction in a Silverado, 600 horsepower 2006 Corvette LS7 427ci V-8 / 90mm intake and heads ported and polished / custom camshaft with .239 intake and .268 exhaust lift @.050 inch with a 116 degree centerline / Kooks 1 7/8-inch headers / Aeromotive A1000 electric fuel pump / Speedtech dry nitrous and plate nitrous systems (275 HP shot)
Rather than run slicks, Paco swapped in a 4x4 system taken from an '08 Chevy Silverado Z-71. Four-wheel-drive on a lowered truck-that's what we were wondering. According to Paco, he engages the automatic system using an MSD timer that keeps the four wheels working for approximately two seconds during holeshots and then switches to two-wheel-drive mode once the truck gains traction. The system eats up a bit of power due to parasitic losses but more than makes up for it by keeping the tires from spinning obnoxiously while the competition takes off
03-29-2010, 04:17 PM
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I dont see how it would work, everything should need a signal to disengage it.
Its not like the front actuator gets power held to it the entire time it is engaged and if you just cut power it disengages, it needs to be powered the other way to disengage it.
Its not like the front actuator gets power held to it the entire time it is engaged and if you just cut power it disengages, it needs to be powered the other way to disengage it.
03-29-2010, 04:56 PM
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What's wrong with just manually switching to 2WD before you shift into third?
It kinda surprises me that he went through all of the trouble to swap to 4WD, especially since he supposedly has 405s on the back.
It kinda surprises me that he went through all of the trouble to swap to 4WD, especially since he supposedly has 405s on the back.
03-29-2010, 06:58 PM
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My 7100# 2500HD runs 14.60 with a 1.99 60' in 4X4 with-out 4X4 it boils the tires.
He may think he is shifting out of 4 wheel drive but...as long as there is load on the drive train it will stay in 4 wheel, then when you back off it will shift.
NO RIG will shift in or out of 4 wheel under load, unless it is a Full time AWD
He may think he is shifting out of 4 wheel drive but...as long as there is load on the drive train it will stay in 4 wheel, then when you back off it will shift.
NO RIG will shift in or out of 4 wheel under load, unless it is a Full time AWD
03-29-2010, 07:05 PM
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I am afraid I will Break something doin that.
do it a few more times and see. then I will try it.
03-30-2010, 11:04 AM
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Mine does the same thing. I hit the button after the 1-2 shift and the light blinks a bit then goes in 2wd. I used to think it was still in 4wd until I forgot to turn it off one time and I lost a few mph in the 1/4 at the track. Its kind of strange though, some trucks seem to be able to shift out and some dont.
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03-30-2010, 02:29 PM
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Just like these guys'
Mine does the same thing. I hit the button after the 1-2 shift and the light blinks a bit then goes in 2wd. I used to think it was still in 4wd until I forgot to turn it off one time and I lost a few mph in the 1/4 at the track. Its kind of strange though, some trucks seem to be able to shift out and some dont.
