Regearing Stock gears are too long

[pMak26]

Strongly thinking about going 3.91. The gearing in every gear is soooo long, 6th is useless and 5th is so sad on track in my 2016. Yes its better in the 2014 with the better 5th n 6th, but not better enough that I want to swap those ratios into the box of the 2016. I'd rather just pop a new rear ratio in and shorten them all up.

Has anyone else regeared their genV? I suppose I need to tell the ECU when I regear it so the speedo and odo will read correct. Anyone have a best way to accomplish that? I'm not sure my regular scanner can do it; I have HP tuners but it definitely isn't worth all those credits to get into the ECU just for regearing it haha

General thoughts?

[StrokerAce]

The one complaint I have of the Gen V is the gearing. More so the transmission gearing vs the rear gear. With the stock 3.55 I'd just as soon as have the gearing my 99 SS came with. 2.66 would feel nice.

[Steve M]

I'm in the process of showing you exactly how to do it, if you are so inclined: https://driveviper.com/forums/threads/30343-Viper-Dana-Super-44-Rebuild

Still have quite a bit more work to do on the write-up, but I'll get there.

And the speedo doesn't go off the transmission or the rear axle - it uses the ABS sensors.

[Lawineer]

The one complaint I have of the Gen V is the gearing. More so the transmission gearing vs the rear gear. With the stock 3.55 I'd just as soon as have the gearing my 99 SS came with. 2.66 would feel nice.

My only complaint is 6th isn't tall enough - which was remedied later.

Super tall 1st gear + closer 2-5 FTW.

FWIW, road race gearing effectively skips first and maybe even second gear. It just makes 2.5th gear first gear. Because it's difficult to find a way to use 2nd gear, let alone 1st, on a road race course.

[pMak26]

I'm in the process of showing you exactly how to do it, if you are so inclined: https://driveviper.com/forums/threads/30343-Viper-Dana-Super-44-Rebuild

Still have quite a bit more work to do on the write-up, but I'll get there.

And the speedo doesn't go off the transmission or the rear axle - it uses the ABS sensors.

Oh my. Not all heros wear capes, unless you wear a cape, then I will stand corrected.

And holy ship if I don't even need to reprogram for the ratio I'm definitely doing this.

[StrokerAce]

My only complaint is 6th isn't tall enough - which was remedied later.

Super tall 1st gear + closer 2-5 FTW.

FWIW, road race gearing effectively skips first and maybe even second gear. It just makes 2.5th gear first gear. Because it's difficult to find a way to use 2nd gear, let alone 1st, on a road race course.

You stated my exact thoughts.

With the 3.55 gears I think the a shorter gear set would be great, not like a 2.97 but the 2.66. I don't need to hit 60 in first.

Or hell, go with some 3.31's and use the 2.97 Z51 style gear set for 1st to 4th and then the shorter 5th and 6th would be a little more relaxed.

My SS has a Dana S60 with 3.73's and the 2.66 gear set in the T56 Magnum are great.

[Dan Cragin]

I tried the 3.73 and 3.91 ratio in the Gen 5's for the track, the 3.73 was best. You might consider a Wavetrack LSD or a OS Giken LSD if its a dedicated track car. Much better traction out of the corners.

[Jack B]

I changed the main cluster gear to the pre-G5 2.66 1st, This shortens 1st. 2nd an 3td. I then replaced 5th gear making it closer to 4th. Finally. I put in the long 6th gear. In 6th. the car cruises at 75 close to 1500 rpms.

You can change 5th and 6th independently.

[Dan Cragin]

Good point Jack,
Rockland gear has a couple ratio changes for the T6060, just like Jack mentioned. They also have 300m options, which will support very high torque.

[Aevus]

Did 3.73 with a Wavetrac, finally changed for 4.10.

Love it.

[SilveRT8]

On my '16 I felt all gears were too long with the 3.55 especially 6th gear with the .50 ratio
Since I do mostly street, I changed to 3.91 and love it, better acceleration in all gears and now 6th gear is more usable on the highway, still very relaxed.
If I were to redo, I would go 4.10 for even more fun on the street.
For track, I agree with Dan that 3.73 would be a better choice, as I hit redline sooner and have to shift more often with the 3.91
GO FOR IT !!!

[Lawineer]

I'm surprised you all don't like the gearing for the track.

[13COBRA]

I'm surprised you all don't like the gearing for the track.

In my Gen IV, I swapped to a Gen V rear diff with the 3.55s...that was plenty. Tons of butt torque compared to the 3.07, yet not too much.

[Jack B]

[QUOTE=Lawineer;463627]I'm surprised you all don't like the gearing for the track.[/QUOTE

5th gear is not ideal, but, that is easily changed

[Arizona Vipers]

If you go with 3.91's for the track, you'll be up a gear the entire time. You won't be able to use 2nd gear at all, *maybe* if you're running slicks.
Before my car had close to the power it does now, I tried 3.73's ONCE and got rid of them. They made the car impossible to do anything in 2nd gear, even with slicks and aero. Leave the 3.55's and just get the 5th ratio changed.
What tracks do you run where you're worried about 5th gear power? I hit 158 at COTA with my bone stock ACR with wing set to #3. Probably coulda hit 163 on #1

[13COBRA]

If you go with 3.91's for the track, you'll be up a gear the entire time. You won't be able to use 2nd gear at all, *maybe* if you're running slicks.
Before my car had close to the power it does now, I tried 3.73's ONCE and got rid of them. They made the car impossible to do anything in 2nd gear, even with slicks and aero. Leave the 3.55's and just get the 5th ratio changed.
What tracks do you run where you're worried about 5th gear power? I hit 158 at COTA with my bone stock ACR with wing set to #3. Probably coulda hit 163 on #1

Is your TT car done yet?!

[Dan Cragin]

The 3.73 is a popular gear fir the street Gen 5's. Stock is a 3.55.

[pMak26]

If you go with 3.91's for the track, you'll be up a gear the entire time. You won't be able to use 2nd gear at all, *maybe* if you're running slicks.
Before my car had close to the power it does now, I tried 3.73's ONCE and got rid of them. They made the car impossible to do anything in 2nd gear, even with slicks and aero. Leave the 3.55's and just get the 5th ratio changed.
What tracks do you run where you're worried about 5th gear power? I hit 158 at COTA with my bone stock ACR with wing set to #3. Probably coulda hit 163 on #1

Your car has a lot more power and less weight then mine ever will. I'm pretty sure I can use 2nd with the slicks, but really I'd rather just have a shorter 3rd that pulls better anyway. My '16 only made 586whp. It's heartbreaking to watch the pcars just pull n pull when I'm out of revs in 4th because going to 5th is like tossing a parachute out the back. Sure I can change 5th n 6th, but overall I think all the gears would be better if they were just a bit shorter.


The 3.73 is a popular gear fir the street Gen 5's. Stock is a 3.55.

<3 you guys and all the help on here. Sounds like 3.73 is the winning ratio!

[Aevus]

Your car has a lot more power and less weight then mine ever will. I'm pretty sure I can use 2nd with the slicks, but really I'd rather just have a shorter 3rd that pulls better anyway. My '16 only made 586whp. It's heartbreaking to watch the pcars just pull n pull when I'm out of revs in 4th because going to 5th is like tossing a parachute out the back. Sure I can change 5th n 6th, but overall I think all the gears would be better if they were just a bit shorter.



<3 you guys and all the help on here. Sounds like 3.73 is the winning ratio!

my 3.73 are still available if anyone is interested

https://driveviper.com/forums/threads/29990-FS-set-of-3-73-gears-373-less-than-5000-miles

[Arizona Vipers]

Your car has a lot more power and less weight then mine ever will. I'm pretty sure I can use 2nd with the slicks, but really I'd rather just have a shorter 3rd that pulls better anyway. My '16 only made 586whp. It's heartbreaking to watch the pcars just pull n pull when I'm out of revs in 4th because going to 5th is like tossing a parachute out the back. Sure I can change 5th n 6th, but overall I think all the gears would be better if they were just a bit shorter.



<3 you guys and all the help on here. Sounds like 3.73 is the winning ratio!

I was about 700whp back then and running Michelin mediums, the stickiest tire you can buy and 2nd was worthless, even the top of it. I had to always be in 3rd no matter how slow the corner.
Scot Rickord warned me and I didn't listen lol. I have mine laying around somewhere, only used for 2 sessions. I guess try it and see if you like it, it's not a huge expense to go back and sell the gears. What tire do you run? Do you have aero?
If you want to beat Porsche's in straight line acceleration you need more power

[Aevus]

and 2nd was worthless, even the top of it. I had to always be in 3rd no matter how slow the corner.

Arizona, do you know the max speed reached in 2nd? Also max RPM on your engine?

There's a slow corner on my local track that always require 2nd... even with lots of torque, 3rd is always the bad option


edit: cant find the calculator but if my memory serves well, 91mph @ rev limit 6,350rpm in 2nd gear (final 3.07) so no less than 70mph with 3.73 gears... say 60-ish mph for comfortable power range... and more with motors that spins more



edit 2:

Corner #14 Namerow


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[Aevus]

That's what I tought:

That's slow cars but when the driver hit the throttle mid corner it's 34-38mph all the passes

https://youtu.be/_1gHsKEdIsw?t=16

and I highly doubt any Viper could exceed 60mph in that corner

[Bruce H.]

Arizona, do you know the max speed reached in 2nd? Also max RPM on your engine?

There's a slow corner on my local track that always require 2nd... even with lots of torque, 3rd is always the bad option


edit: cant find the calculator but if my memory serves well, 91mph @ rev limit 6,350rpm in 2nd gear (final 3.07) so no less than 70mph with 3.73 gears... say 60-ish mph for comfortable power range... and more with motors that spins more



edit 2:

Corner #14 Namerow


52250

I've track Mont Tremblant many times in my '14 TA with stock gearing, which is perfect for that track. I'm in 4th approaching Namerow, and down to 3rd under braking. It's exit is too tight, off camber, and car too unweighted to take advantage of 2nd gear torque, plus you should be in 3rd entering T15 anyways. So a double downshift for 2nd and immediate upshift back to 3rd is a waste. You're better to optimize your entry and exit to Namerow in 3rd and accept that there is no fast way through that corner other than being super smooth through and out of it, imo. Viper is very fast on the track.

[Aevus]

plus you should be in 3rd entering T15 anyways.

That's a good point.

Only did few laps with my gen 3 (stock engine, 3.73 gears) and I remember clearly downshifting 2nd in corner #14 without any issues regarding torque... but stock engine and 355's ACR tires.
Probably another story with more torque.

[Aevus]

Viper is very fast on the track.

Havent witness any Viper beating PGTs or Mclarens on that track yet. In fact still waiting to see a sub 1:45min laptime from a Viper (ACR included). I guess that requires a good driver too!

[Bruce H.]

Havent witness any Viper beating PGTs or Mclarens on that track yet. In fact still waiting to see a sub 1:45min laptime from a Viper (ACR included). I guess that requires a good driver too!

I do 2 private days there each year with the Rennsport PCA club instructors and club racers mostly. Fast crowd, with many arriving on slicks in trailers. They love it when a Viper comes out as it breaks the P-monotony and provides target practice for them, but alas, the Viper drives in and represents itself very well! Not being the fastest on any given day is okay, and having a little mechanical sympathy for your car is even better!

[Aevus]

Bruce, will try the Namerow corner in 3rd gear next time, thanks for the tip... That is if I ever track my Viper again (blew an engine at Tremblant lol)

[Bruce H.]

Bruce, will try the Namerow corner in 3rd gear next time, thanks for the tip... That is if I ever track my Viper again (blew an engine at Tremblant lol)

Yeah, Namerow is a throw away corner in my book as there's just no way to put the power down, but lots of ways to screw it up and destroy your tires trying.

Blown due to oil starvation? Stock Gen 3's really need the Gen IV/V oil pan upgrade with swing-arm oil pickup handling corners when tracking as I understand it. I know a track rat that blew 2 Gen III engines, with his home track being Tremblant. Good luck!

[Aevus]

Blown due to oil starvation? Stock Gen 3's really need the Gen IV/V oil pan upgrade with swing-arm oil pickup handling corners when tracking as I understand it. I know a track rat that blew 2 Gen III engines, with his home track being Tremblant. Good luck!

lol I know, I ordered a swing-arm oil pickup pan about 5 hours after I blew my engine

... the worst thing is I KNEW it could happen, I was warned. I told myself to not push the car too much. About 4 laps later the crank bearings were done.

Next week they install my other engine, the ''racy'' one
https://driveviper.com/forums/threads/28790-What-really-limits-our-engines-to-rev-higher?p=463669&viewfull=1#post463669

Even though I have the swing-arm pickup oil pan + the Prefix oversized oil rotor and the crank machined and balanced, I am very unsure about ever bringing the car to any track...

[Lawineer]

lol I know, I ordered a swing-arm oil pickup pan about 5 hours after I blew my engine

... the worst thing is I KNEW it could happen, I was warned. I told myself to not push the car too much. About 4 laps later the crank bearings were done.

Next week they install my other engine, the ''racy'' one
https://driveviper.com/forums/threads/28790-What-really-limits-our-engines-to-rev-higher?p=463669&viewfull=1#post463669

Even though I have the swing-arm pickup oil pan + the Prefix oversized oil rotor and the crank machined and balanced, I am very unsure about ever bringing the car to any track...

Just get a dedicated track car. They hold value really well and you'll love the peace of mind.

[Aevus]

Just get a dedicated track car. They hold value really well and you'll love the peace of mind.

1000%

Just really don't know which platform

[Lawineer]

1000%

Just really don't know which platform

My 2 cents:
Don't do anything new and creative. Stick with platform that are tracked to death, sorted, and someone has developed a solution for every bug.

Miata
BRZ
Spec Boxter (or Cayman if you must)
C5/C6/C7(not Z06 or Zr1). C5 has serious ABS issues that interfere with driving. C7 is just much more expensive and heavy.

Some people like the headaches of older BMWs for some reason I cannot understand, so there's always that if you're a real glutton for punishment.

And get a build for reliability. That means no LS swapped Miatas or crazy high HP builds.

My next car will either be a Boxter or a C5 that has stand alone electronics and ABS.


I also suggest getting a track car already built, but spend a little extra for a good clean build by someone reputable. A clean, reputable track car that is already built is still way cheaper than building your own.

[pMak26]

Some people like the headaches of older BMWs for some reason I cannot understand, so there's always that if you're a real glutton for punishment.


Lol and can confirm. My "track bitch" is an e46m3. You really have to enjoy working on your car to track a BMW. It is, however, faster than C5s. Heck, it's faster than a LOT of other toys. Last time out I was doing times as quick as a GTR on slicks (me also on slicks). If anyone is interested in the build for that car its well documented here (https://nam3forum.com/forums/forum/special-interests/track-autox/13467-the-pmak26-apexobsessed-driveway-track-car-build)

Some vid if you want: Here (https://www.youtube.com/watch?v=qIpVu31J7VM)

52254

Sorry for off topic post. I'm still thinking 3.73 is the way to go on the track viper.