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GT3RS engine in GT4

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Old Mar 3, 2016 | 02:36 AM
  #16  
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Originally Posted by ChrisF
Built BGB 4.0L with X51 and bolt ons. It may not have the character of the GT 9A1 but it will have nearly the same HP

That's the route I would go, and makes the most sense, in so many ways....
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Old Mar 3, 2016 | 10:57 AM
  #17  
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Originally Posted by jphughan
Wouldn't the gearbox need to be flipped upside down to mate with the diff after being flipped 180 degrees? Has that been done successfully and proven in track settings?
I don't know anyone who has done it and I'm not even sure it is possible. All the special fluid needs and finicky nature of the PDK would concern me.
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Old Mar 3, 2016 | 12:16 PM
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Originally Posted by 5500
I think when the X51 transplant with headers and tune gets sorted out, there will be fewer engine transplant/increased displacement mods done. There will always be those who want and are willing to pay for extremes but I think a well sorted X51 package is going to transform the 4 into a 3 slayer.
This is my plan; now that the 981 comes with the 3.8L we hope to refine this package Monday on the dyno and have some figures to back it up. The top end HP from the X51 is awesome. It's super linear and at 5.5K RPM the thing really comes alive.

To answer the OP's inquiry, the trans will bolt right up to that motor but fitting it in the engine bay, purchasing the engine AND retrofitting a complete chassis harness would be a $200K proposition when all is said and done. I would feel like a butcher hacking up your GT4 to bring it to fruition.

If we can produce the estimated 450+ HP goal I have in mind, I think you folks will be happy.
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Old Mar 3, 2016 | 08:26 PM
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Originally Posted by RocketGuy3
I dunno, but is there room for an LT1 back there? B-)
roflmao or a peterbilt? Loads of torque
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Old Mar 3, 2016 | 10:18 PM
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Originally Posted by BGB Motorsports
I would feel like a butcher hacking up your GT4 to bring it to fruition.
One of the B's must stand for butcher

I'll be calling you guys in a few years
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Old Mar 3, 2016 | 10:33 PM
  #21  
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I mean if you are trying to beat the gt3 and rs on the track and beat them in their own house why would you want to use a gt3rs motor? That's almost giving up and saying you need what they have haha. I'd just build the motor you have personally.
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Old Mar 3, 2016 | 10:38 PM
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Originally Posted by bhk1004
I mean if you are trying to beat the gt3 and rs on the track and beat them in their own house why would you want to use a gt3rs motor? That's almost giving up and saying you need what they have haha. I'd just build the motor you have personally.
you could compartmentalize it into a Sun Tzu type of principle
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Old Mar 3, 2016 | 10:41 PM
  #23  
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X51 group buy!
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Old Mar 3, 2016 | 10:59 PM
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Originally Posted by smmmurf
X51 group buy!
Hilarious!
Seriously though I'm soooo in if that happens lol
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Old Mar 3, 2016 | 11:01 PM
  #25  
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Originally Posted by bhk1004
I mean if you are trying to beat the gt3 and rs on the track and beat them in their own house why would you want to use a gt3rs motor? That's almost giving up and saying you need what they have haha. I'd just build the motor you have personally.
Dam good point.
Before thinking of engine swap I would check every X51 option and then go to a hell of a suspension shop that can maximize the suspension options and see if that alone doesn't do it.
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Old Mar 4, 2016 | 03:06 PM
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Originally Posted by ChrisF
Built BGB 4.0L with X51 and bolt ons. It may not have the character of the GT 9A1 but it will have nearly the same HP
Not knocking that excellent option, but one of the best parts of the R/RS 4.0L is the 8,800 rpm redline. That allows one to have way lower gearing - giving much more thrust in each gear (even BGB could match the 500hp) - assuming the gearing can be changed to suit the motor...
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Old Mar 4, 2016 | 03:24 PM
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Originally Posted by GrantG
Not knocking that excellent option, but one of the best parts of the R/RS 4.0L is the 8,800 rpm redline. That allows one to have way lower gearing - giving much more thrust in each gear (even BGB could match the 500hp) - assuming the gearing can be changed to suit the motor...
If one has torques one doesn't need to rev so high.
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Old Mar 4, 2016 | 04:08 PM
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Originally Posted by RocketGuy3
I dunno, but is there room for an LT1 back there? B-)
Dude! As much as I love the 3.8 in the GT4, I'd pay good money for a fully engineered and integrated LT1 from the new Vette in the GT4 straight from Porsche. Damn, what a combo that would be.

It's time for Stuttgart and Detroit to become good friends instead of adversaries. Have Porsche offer the LT1 as a $5k option. The LT1 is invariably cheaper to produce than the 3.8, so that results in even higher profit margins for Porsche, additional smallblocks sold for GM, and more happy customers. Win, Win, Win.
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Old Mar 4, 2016 | 04:16 PM
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Originally Posted by Quikag
Dude! As much as I love the 3.8 in the GT4, I'd pay good money for a fully engineered and integrated LT1 from the new Vette in the GT4 straight from Porsche. Damn, what a combo that would be.

It's time for Stuttgart and Detroit to become good friends instead of adversaries. Have Porsche offer the LT1 as a $5k option. The LT1 is invariably cheaper to produce than the 3.8, so that results in even higher profit margins for Porsche, additional smallblocks sold for GM, and more happy customers. Win, Win, Win.
RuF. Nuff said.
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Old Mar 4, 2016 | 04:19 PM
  #30  
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Originally Posted by Quikag
Dude! As much as I love the 3.8 in the GT4, I'd pay good money for a fully engineered and integrated LT1 from the new Vette in the GT4 straight from Porsche. Damn, what a combo that would be.

It's time for Stuttgart and Detroit to become good friends instead of adversaries. Have Porsche offer the LT1 as a $5k option. The LT1 is invariably cheaper to produce than the 3.8, so that results in even higher profit margins for Porsche, additional smallblocks sold for GM, and more happy customers. Win, Win, Win.
My fine sir ...Just what are you smokin'??
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