Found a sleeper video with the SHO

[High on Ethanol]

100% torque to rear wheels isn't even possible on this platform. They definitely need to change the wording so it isn't so misleading. The system is reactive AWD unless stopped, which it seems to always take off in AWD for a short time under acceleration. The front wheels are always driven even if they are at 100% slip.

 

[SM105K]

100% torque to rear wheels isn't even possible on this platform. They definitely need to change the wording so it isn't so misleading. The system is reactive AWD unless stopped, which it seems to always take off in AWD for a short time under acceleration. The front wheels are always driven even if they are at 100% slip.

Yes sir.

 

[yaycandy]

My 94 astro awd is more easy. Full time awd no matter what, no electronics. They all spin all the time. They are beasts in the snow

 

[SilvererSHO]

100% torque to rear wheels isn't even possible on this platform. They definitely need to change the wording so it isn't so misleading. The system is reactive AWD unless stopped, which it seems to always take off in AWD for a short time under acceleration. The front wheels are always driven even if they are at 100% slip.

And even if the RDU was given 100% of the available torque coming out of the PTU (which it never is as you stated) and one wheel had no traction so traction control gave it braking you'd still only have 50% of the torque available at the other wheel (at twice the RPM's). That's just how open differentials work. A locker on the other hand would give the wheel with traction 100% torque. And....the wheel spinning in mud, ice or up in the air would receive 100% of the torque too. Lot's of double speak and half-truths in this article.

 

[SilvererSHO]

My 94 astro awd is more easy. Full time awd no matter what, no electronics. They all spin all the time. They are beasts in the snow

It's still open diffs on both ends though right? So if you got one side of your vehicle down in a ditch and all the weight and traction wound up on that side you'd still be spinning both tires on the other side with little traction. That's what traction control has over 4 x 4 with open diffs.

 

[yaycandy]

It's still open diffs on both ends though right? So if you got one side of your vehicle down in a ditch and all the weight and traction wound up on that side you'd still be spinning both tires on the other side with little traction. That's what traction control has over 4 x 4 with open diffs.

Didnt think of that. It does have open diffs as when i spin one by hand the opposite wheel spins the other way. I guess it would get stuck

 

[High on Ethanol]

Best AWD I've ever seen on a car is the Audi sedans. The S4 and up have beastly AWD systems. If Ford used a similar setup... They would've built a mustang killer. Oooops!

 

[stripSHO]

100% torque to rear wheels isn't even possible on this platform. They definitely need to change the wording so it isn't so misleading. The system is reactive AWD unless stopped, which it seems to always take off in AWD for a short time under acceleration. The front wheels are always driven even if they are at 100% slip.

A tire that has zero traction delivers zero torque. So it doesn't matter if the front wheels are always driven. If they're spinning freely then all torque is going to the rear.

 

[High on Ethanol]

Until the RDU breaks under more than 200ft torque

 

[High on Ethanol]

A tire that has zero traction delivers zero torque. So it doesn't matter if the front wheels are always driven. If they're spinning freely then all torque is going to the rear.

I do appreciate the physics reminder though. Some people struggle with understanding a tire on ice has almost zero torque. I remind myself in every empty parking lot. The more you know.

 

[yaycandy]

I do appreciate the physics reminder though. Some people struggle with understanding a tire on ice has almost zero torque. I remind myself in every empty parking lot. The more you know.

It actually still has full torque, as it will lose it as its spinning and the rpm raises. If you punch it, it will slip because its all power and little torque but if you ease into it, it will drive because there is more-full torque and little hp. And on a vehicle this works because you never drive a wheel on ice with no weight above it. As weight is also a factor of a tire moving on ice with or without torque

 

[High on Ethanol]

Unless you're going to convert torque into friction and heat, I'd just leave it at the fact that this platform cannot put full torque to the rear wheels. If you do get the full tuned torque to the rear tires, please upload a video. I like Carnage.

 

[yaycandy]

Unless you're going to convert torque into friction and heat, I'd just leave it at the fact that this platform cannot put full torque to the rear wheels. If you do get the full tuned torque to the rear tires, please upload a video. I like Carnage.

My awd power gauge shows 100% to the rear when i floor it. So only the hp goes back there and not the torque? That Cern supercollider keeps putting me in alternate universes so maybe torque and hp can be split between wheels on this universe.

 

[High on Ethanol]

Let's see ya do a rwd burnout. Put the fronts on rollers, backs on the street.

 

[yaycandy]

Let's see ya do a rwd burnout. Put the fronts on rollers, backs on the street.

I prefer lunch trays.
Are you saying my fancy gauge that fills a blue bar is lying to me!?!?

Why so serious? Im never serious online, its just typed letters

 

[High on Ethanol]

I'm just down for some Carnage. I'm the type of guy who doesn't mind a train wreck as long as it doesn't change my plans. Besides it would answer some questions, such as would the RDU handle a full-send tuned ecoboost.

 

[yaycandy]

I'm just down for some Carnage. I'm the type of guy who doesn't mind a train wreck as long as it doesn't change my plans. Besides it would answer some questions, such as would the RDU handle a full-send tuned ecoboost.

Is the RDU different on the PP or Police package then it is on NO PP? Final drive is made by the rear gear but on our platform maybe its different in the tranny because of fwd setup. If a better RDU can be had then i dont care to blow my stock non-pp one
Just remove the front axels, she’ll figure it out.

 

[stripSHO]

I've read the PI RDU has a more severe duty wet-disc clutch pack vs the dry clutches on the SHO. I have a junkyard interceptor rear end swap on my wish list.

I'd love to know what the torque limitations of the rear-end actually are so I could tune around it once I get to that point. I can promise you it's nowhere near the 150-200 ft. lbs. that has been repeated ad nauseam. If that were true it would be weaker than your average ATV axle. It wouldn't be able to handle anything beyond idle from the engine. ****, it would mean I could overpower the rearend with nothing but my 180 lb butt and an 18" pipe wrench.

I don't doubt the rear end does have a relatively weak limit, but it's in the 1000's of ft. lbs.

 

[yaycandy]

I've read the PI RDU has a more severe duty wet-disc clutch pack vs the dry clutches on the SHO. I have a junkyard interceptor rear end swap on my wish list.

I'd love to know what the torque limitations of the rear-end actually are so I could tune around it once I get to that point. I can promise you it's nowhere near the 150-200 ft. lbs. that has been repeated ad nauseam. If that were true it would be weaker than your average ATV axle. It wouldn't be able to handle anything beyond idle from the engine. ****, it would mean I could overpower the rearend with nothing but my 180 lb butt and an 18" pipe wrench.

I don't doubt the rear end does have a relatively weak limit, but it's in the 1000's of ft. lbs.

Yea i have alot of disbelief that it can only handle 200ftlb as even the weakest rears on 60s roadsters and handle more than that. My 90 miata has the vlsd rear and it can handle around around 300ftlb till failure. Now the sho may not handle 200ftlb forever, high torque would cause it to break faster maybe but i think i found a spec online long ago that it broke around 400-500ftlb directly to it

Bpd ran over 600awtq. Im sure his rear didnt break. It may not of pushed all that to the rear but im sure the rear got alot more than 200. An awd dyno run may be able to read out how much power and torque was driven to each roller maybe but im not sure. I would think it would be able to somewhere in its programming

 

[stripSHO]

What I mean is actual torque limit at the input. The transmission multiplies the engine torque 14x in 1st gear