Fall 2017 GT500 supercharged voodoo, 10 speed auto and....

Fourcam380

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I will say that the 4.9 1st is great for helping gas mileage on stop/go, and slight throttle driving. The mechanical levarage would require half the power from the engine to get it rolling. I get why it's there, but for performance numbers, I think a strong to possibly full power pull from 2nd at 2500rpm if sc or 3500rpm if turbo would rally hard. My two step hit hard from a dig with 2.66 1st, 3.08 rear, 28" tires and 3800rpm on the street. Very quick launch for rwd and drag radials.

With DRs it will get out of the hole hard. Should really help ETs as long as the tire is there. Changing the ratios themselves may be an option as well.
 

tt335ci03cobra

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I could see slicks and skinnies launching very well with a 4.9 1st on a limited torque setup. Mechanically, that's about 3400lbs/ft of torque if my mental math is correct. It'd probably be a bit much for drag radials though.

Let's say it has 750/700hp/tq as measured in a 1:1 gear. Multiply that by 4.9 and you get 3430lbs/ft tq to be exact. That's a lot of effective torque. Divide that out by the tire and factor in a 3.27 rear and you still need something like a 31x14.50 drag slick to actually stick that much effective torque, again mental math/guestimation. Most street outlaw and renagade cars run what like a 2.40 1st iirc? They can run a 28x12 because the effective torque is almost half, like 1500ish in most cases. Again just mental math, I'm not an engineer.

The new demon launches on a similarly high 1st gear running like a 4.10 1st iirc, but that car weighs 4100lbs and is using electronics to limit torque on launch down into the 400wtq range if I've read between the lines well enough to understand what it is their doing with the software/bypass setup on the car.

I think ford would either have to do the same, with something like 275-300wtq on the initial bite, then ramp up to 500wtq by the top of 1st, go full power from 2nd forward. Or they could just lock out 1st for launch mode and start off straight in 2nd. Launching in a 2.9/1 gear with 700tq is like 630wtq, which would be 1827wtq (effective) which you then can factor a 3.27 rear would definitely hook hard on a 27-28x12 drag radial, it'd probably pull a 1.4-1.5 60ft and about 1.75-1.8G's of launching force assuming the mag shocks were tuned for it to rock back, set and squat, tires were aired correct, moon was half assed, wind was nice, seas had parted, mountains had a little snow, and so on...

Just guesses, I'm excited to see how it ends up working. :Beers:

One things for sure, it won't be long now. And honestly, it should be easy to get 10's from it based on what's happened the last 3 years in the gm and dodge camp. The ford guys are well aware and actively pursuing this type of strong all around performance much like the zl1/z06.
 

Fourcam380

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If it will hook depends as much if not more on the cars setup as it does tq at launch. My 4250lb 7G E63 buturbo made 740rwtq at 2400rpm and would launch at ~3500rpm never spinning on 265/40/18 MT DRs. That's with a 4.37 1st gear and 2.82 rear diff with non drag suspension.
 

tt335ci03cobra

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It definitely comes down to what electronic/programming they go with. If they go pretty heavy on the e-diff/power management, they could easily make a 4.9 1st work.

They actually did pretty good on the 2013 trinity cars. Before that, magazines could never launch a gt500 anywhere close to a 3.5-3.8 0-60. Then ford put it together for them to where they just needed to hold a pedal down, and bam, 3.5 0-60 from a mustang.
 

Sonic605hp

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I along with many others are tired of this conjecture bullshit. I wish Ford would just drop this thing....it's obvious they're not going to be after the Demon and they're after the ZL1 and most likely the Z1LE. Just give us the ****ing car at this point.
 

tt335ci03cobra

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If it was just going to be a sticker/strip dog and pony special, they'd have already released it.

They want to make something excellent. The cobra/gt500 name carries a lot of history.

They'd have already launched a shitbox if that's all that was coming.
 

DepWraith

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I was told by an engineer to expect an announcement in June so I'm passing that along. I wouldn't say July unless I was told different.
 

DepWraith

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5.0 with twin 62mm turbos...same one I've been posting for quite some time now (with the small exception where I was told by someone on here about a blown 5.2...I knew there were 2 motors concurrently in development, and that they were leaning towards blown 5.2 for cost cutting: but that changed when the demon was revealed apparently).
 
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tt335ci03cobra

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Turbo would be excellent. I'd buy that.

Basic bolt ons and a boost controller with a driver and tires, 145mph car.

That's worth $75k. $70k at the showroom and $5k in parts.

Look at how well the turbo v8 amg's and m's respond to those mods with 4.xL v8's and lesser heads.
 

tones_RS3

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5.0 with twin 62mm turbos...same one I've been posting for quite some time now (with the small exception where I was told my someone on here about a blown 5.2...I knew there were 2 motors concurrently in development, and that they were leaning towards blown 5.2 for cost cutting).
I will agree with that. I heard from my guys the same thing.
 

Fourcam380

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Turbo would be excellent. I'd buy that.

Basic bolt ons and a boost controller with a driver and tires, 145mph car.

That's worth $75k. $70k at the showroom and $5k in parts.

Look at how well the turbo v8 amg's and m's respond to those mods with 4.xL v8's and lesser heads.

MB and BMW heads have been light years ahead of anything domestic until the coyote and voodoo. You can have boat anchor heads (modular 2v) and still make a ton of power with a turbo or blower. The displacement of the head unit of the supercharged or turbo dictates potential hp not heads like when NA. This is why it's so easy to make power with FI.
 

Fourcam380

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I'd take MB M156 and M159 heads over pretty much any other NA 4v head on the market. Stock M159 outflow and have much higher velocity than Yates or comparable NASCAR heads. Let alone ported or M159 BS.
 

AustinSN

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I'd take MB M156 and M159 heads over pretty much any other NA 4v head on the market. Stock M159 outflow and have much higher velocity than Yates or comparable NASCAR heads. Let alone ported or M159 BS.
On a huge bore though, not sure I can give all the credit to the design.

If you shrunk those heads down to fit on a 10mm smaller bore they would likely flow very similar to most other 4v heads out there.
 

Fourcam380

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On a huge bore though, not sure I can give all the credit to the design.

If you shrunk those heads down to fit on a 10mm smaller bore they would likely flow very similar to most other 4v heads out there.

Ding ding ding. 4.02" bore FTW.
 

Fourcam380

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4.02" bore?? Wow. Isn't that approaching big block territory?

It's the largest production 4v v8 bore I know of but only on par with Ford 302s and chevy 350s.

The BS heads filled 380" at 8k from the factory.

Modern emissions laws FTL
 

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