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'05 CTS-V
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I found the Fastrack News that added the CT4-V BW for T2 - https://cdn.connectsites.net/user_files/scca/downloads/000/061/927/2022 May Final TBs 04.13.pdf

Allows up to 18x10/11" wheels (f/r) with up to 295 width tires. Says "Suspension and engine components must remain OE or OEM unless noted below: ECU and all other computers must remain unmodified and must utilize OEM programming unless noted below. Carbon Fiber package RPF-PFZ allowed. Rear spring allowed #84004133. eLSD Calibration permitted." I looked up that rear spring part number on a couple of the GM parts sites and both came up as "discontinued" with no information about what it is. Any ideas?
 

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2023 CT4V Blackwing 6MT Black Raven/Sky Cool Gray
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It makes sense for a road race. The auto is a smidge faster around a track then the 6MT. The Blackwing were designed for track duty. Cooling is not an issue for that transmission.
 

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I joined just to watch this thread. Does anyone know the differences in the rear spring rate between the stock 4BW and the 84004133 part? Also, is the eLSD cal the same as the GMPP version for the Camaro?

I just looked and that spring part number seems to be discontinued.
 

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Does that mean you have traded the 5BW for the 4BW? Or is that still an 'underconsideration' move?
I'm definitely keeping the 5BW, I'm just hesitant to beat it up too much on track and I'm really afraid of the replacement costs of the CCB rotors. The 4BW would be something I'm less concerned about beating up on track but it would still be a road car and my C7 would still be my primary track car.
 

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96 FWB
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'Follow'ing And you're straight up for not charging us to watch. :coffee:
 
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2002 F55 STS, 2014 Explorer XLT, F-150
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Moderator edit at 1300 EST 31 Dec. 2022 - The OP mg8t7gn has (as of 13 Dec.) gone back and changed every one of his 8 posts to simply read "ok". Those non-info posts have been removed from the visible forums. The thread title and replies remain for possible interest. Moderators may wish to see the Deleted ...... forum.

Since the OP last logged in at the same date/time he essentially removed all his CF posts I doubt we'll see him again.
 

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96 FWB
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Meh. Interesting, in a 'wish it were more interesting' sorta way. Could be as simple as enticed to becoming an 'influencer' or to finding a platform that pays for content v. merely conversing and sharing information as with this forum.
 
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