2.84 Ratio A4 77284-K
Thread Starter
Intermediate
Joined: Oct 2013
Posts: 39
Likes: 1
From: North Haven CT
2.84 Ratio A4 77284-K
Rebuilding my A4 again, this time changing the 3:06/1.63 to the closer 2:84/1.55 by way of the sonnax 77284-K Six pinion input carrier. The remainder of the hard parts are mostly all sonnex, My final will be *3.15 (current) -OR- M6 3.46 still deciding,and coupler will be the YankSS3600. The remaining detail list is long.
Ive searched high and low for a C5 owner posting *any* results with the 2.84 carrier kit, the best I was able to locate was sonnax's own YT video, a few F bodies and Zero Corvettes with this kit.
Anyone have an a4 modded in this configuration here? I'de like to know how far 1st is pulling out with this kit, I hated my first gear, just came too quick with second being way too shallow in the needle and the recovery was seemingly decades.
Thanks Guys!!
Ive searched high and low for a C5 owner posting *any* results with the 2.84 carrier kit, the best I was able to locate was sonnax's own YT video, a few F bodies and Zero Corvettes with this kit.
Anyone have an a4 modded in this configuration here? I'de like to know how far 1st is pulling out with this kit, I hated my first gear, just came too quick with second being way too shallow in the needle and the recovery was seemingly decades.
Thanks Guys!!
Advanced
Joined: Sep 2011
Posts: 54
Likes: 2
From: Alexandria Pa
Rebuilding my A4 again, this time changing the 3:06/1.63 to the closer 2:84/1.55 by way of the sonnax 77284-K Six pinion input carrier. The remainder of the hard parts are mostly all sonnex, My final will be *3.15 (current) -OR- M6 3.46 still deciding,and coupler will be the YankSS3600. The remaining detail list is long.
Ive searched high and low for a C5 owner posting *any* results with the 2.84 carrier kit, the best I was able to locate was sonnax's own YT video, a few F bodies and Zero Corvettes with this kit.
Anyone have an a4 modded in this configuration here? I'de like to know how far 1st is pulling out with this kit, I hated my first gear, just came too quick with second being way too shallow in the needle and the recovery was seemingly decades.
Thanks Guys!!
Ive searched high and low for a C5 owner posting *any* results with the 2.84 carrier kit, the best I was able to locate was sonnax's own YT video, a few F bodies and Zero Corvettes with this kit.
Anyone have an a4 modded in this configuration here? I'de like to know how far 1st is pulling out with this kit, I hated my first gear, just came too quick with second being way too shallow in the needle and the recovery was seemingly decades.
Thanks Guys!!
Advanced
Joined: Sep 2011
Posts: 54
Likes: 2
From: Alexandria Pa
Then currently with that shift point (3.06/1.63 and 3.15 rear) you would be shifting 1st to second at 50-51 mph and your rpm drop would be down to 3300. With the 2.84/1.55 and 3.15 rear 1st gear at 6150 would be 54-55 mph and your drop would be down to 3400 rpm. With the 2.84/1.55 and 3.42 rear 1st to 2nd would be at 50-51 mph and drop would be down to 3400 rpm not much of a gain, with the 3.15 you lose 1st gear torque multiplication and gain 100 rpm in 2nd with the 3.42 you have same torque multiplication in 1st as the 3.06 and gain 100 rpm into 2nd. If it were 2.84/1.63 that would be a close ratio but because its offered 2.84/1.55 to me they defeated the pupose
Thread Starter
Intermediate
Joined: Oct 2013
Posts: 39
Likes: 1
From: North Haven CT
I agree, it appears the term "close ratio" is only an advertising gimmick but it didn't make much sense to me either. So why is this a 5-700 "option" with many of the builders? Longevity? Strength?
Advanced
Joined: Sep 2011
Posts: 54
Likes: 2
From: Alexandria Pa
No idea other than promoting the product, I did take time and watch a video on youtube, and with it they tried to show a 300-400 rpm increase but in the case with the demo they programmed the the 1st to 2nd shift point at a higher rpm with the gears that they promote. But that was on a Silverado and I don't know if it uses the same ratio's as the C5. In it the 1st to 2nd in stock form was shifting at 59-6000 and the drop was down to 36-3700 rpm then with the ratio they supplied the 1st to 2nd shift was at 62-6300 and the drop went to 39-4000 rpm
Thread Starter
Intermediate
Joined: Oct 2013
Posts: 39
Likes: 1
From: North Haven CT
A few folkscalled that out in the comments section, I saw that same video in the truck the claim was the tuning wasn't complete not sure about that. I guess with this one it's try for yourself. It's in the parts pile, we'll see.
Advanced
Joined: Sep 2011
Posts: 54
Likes: 2
From: Alexandria Pa
I think the 3.42's with your converter will show 90-95% of any improvement the transmission ratio's will be minimal
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