Swappin' Gears - Page 3 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

10 2SS/RS 6M · 09-08-2013, 09:11 PM

When I first boost it (stock internals) I'm going to try the 3.91's with the stock diff..
When I go all out w/cam, heads and manifold and forged internals with the procharger and more boost, then I'm going with the Hammerhead with 4.11's, just for the fact it's a better 1/4 mile gear and still has good street matters, could even get away with a 4.33 on the street with the overdrives these days. I'm talking about long fairly hi speed drives.
But I've seen streeters with lower then 5.14's!
In other words that was probably already mentioned it's always better to go with the lowest gear you want to tolerate on the street opposed to better track times, after all I guess it depends on where you drive the car the most. Then you have the bragging rights of course... Everybody is different. But Everybody wants to go fast!

BiggFoot · 09-14-2013, 01:18 PM

I have an M6 with Strange 4.11 gears and they pull like a freight train but you better be ready to shift fast or your hitting the limiter in no time flat.

I wont post it here due to rules, but if you want to see a 10 - 120 mph pull with 4.11 gears go to youtube and search for bigggggfoot. You will see how fast the rpms rev in each gear and how quick the shifts are. Redline is between 125-130 in 4th gear with the 4.11 gears in my A6 BUT that is on 22's.

Apex Motorsports · 10-02-2013, 10:46 AM

Quote:

Originally Posted by BiggFoot

I have an M6 with Strange 4.11 gears and they pull like a freight train but you better be ready to shift fast or your hitting the limiter in no time flat.

fldrummer · 10-02-2013, 10:34 PM

Quote:

Originally Posted by BiggFoot

I have an M6 with Strange 4.11 gears and they pull like a freight train but you better be ready to shift fast or your hitting the limiter in no time flat.

I wont post it here due to rules, but if you want to see a 10 - 120 mph pull with 4.11 gears go to youtube and search for bigggggfoot. You will see how fast the rpms rev in each gear and how quick the shifts are. Redline is between 125-130 in 4th gear with the 4.11 gears in my A6 BUT that is on 22's.

You should see how fast the redline shows up with 4.10s/4.11s combined with a positive-displacement supercharger!

Apex Motorsports · 10-25-2013, 10:23 AM

Quote:

Originally Posted by fldrummer

You should see how fast the redline shows up with 4.10s/4.11s combined with a positive-displacement supercharger!

I can imagine. I have 4.11 in my NA car and it comes pretty freaking quick.

6bangerBOOM · 11-13-2013, 01:56 AM

Great write up. I'm about to slap 3.91's in my V6 and wanted to know what transmission gear were you using to make your calculations? I crunched some numeros and came up with 70mph at 2162rpm in 6th (0.67:1) with 28.5" wheels. Did I do this right?

toNspahreP · 11-13-2013, 02:21 AM

http://www.car-videos.net/tools/speedrpm.asp?

Apex Motorsports · 11-19-2013, 06:22 AM

Quote:

Originally Posted by 6bangerBOOM

Great write up. I'm about to slap 3.91's in my V6 and wanted to know what transmission gear were you using to make your calculations? I crunched some numeros and came up with 70mph at 2162rpm in 6th (0.67:1) with 28.5" wheels. Did I do this right?

Should be 0.67 for auto, 0.75 for manual. I use the calculator on Richmond Gears website.

not · 11-19-2013, 05:04 PM

Mr. Chase,

You alluded to suggesting the 3.73 over the 3.91 for the SS L99. Any reason? It seems the 20% increase would be dramatic but not cause too much loss of mpg...

Am I off base or what?

Apex Motorsports · 11-20-2013, 12:56 PM

Quote:

Originally Posted by not

Mr. Chase,

You alluded to suggesting the 3.73 over the 3.91 for the SS L99. Any reason? It seems the 20% increase would be dramatic but not cause too much loss of mpg...

Am I off base or what?

Which gear is best should really be looked at on a case by case basis so that is a pretty generalized statement. 3.73 has proven to be a very fun gear for most L99 street applications. With the more aggressive gearing in the auto trans the 3.91s start to get into territory where traction can become an issue without some supporting mods.

not · 11-20-2013, 03:50 PM

Quote:

Originally Posted by Apex Chase

Which gear is best should really be looked at on a case by case basis so that is a pretty generalized statement. 3.73 has proven to be a very fun gear for most L99 street applications. With the more aggressive gearing in the auto trans the 3.91s start to get into territory where traction can become an issue without some supporting mods.

Okay thanks. Reason I ask is that Chevy Performance is advertising the 3.91 in their catalog exclusively, and I would have to think most applications would be street driving.

Apex Motorsports · 11-21-2013, 06:12 AM

Quote:

Originally Posted by not

Okay thanks. Reason I ask is that Chevy Performance is advertising the 3.91 in their catalog exclusively, and I would have to think most applications would be street driving.

That is the only gear they have. It is great in the LS3 and will work in the L99, it just needs some other upgrades along with it.

ZWA SS · 11-21-2013, 06:38 AM

Quote:

Originally Posted by Apex Chase

That is the only gear they have. It is great in the LS3 and will work in the L99, it just needs some other upgrades along with it.

Which mods do you suggest to compliment 3.91 in A6 SS.?

Already have headers, cold air, exhaust, subframe, and rear trailing arms.

Apex Motorsports · 11-21-2013, 07:03 AM

Quote:

Originally Posted by ZWA SS

Which mods do you suggest to compliment 3.91 in A6 SS.?

Already have headers, cold air, exhaust, subframe, and rear trailing arms.

When you say subframe, do you mean bushings or a brace? If you have bushings and trailing arms you are pretty much set. It is probably going to be very easy to break the rear tires loose though so stickier tires may be in the cards afterwards.

09-08-2013, 09:11 PM	#29
10 2SS/RS 6M Drives: 2013 Camaro ZL1 bone stock 9K miles Join Date: Oct 2010 Location: Philadelphia, PA Posts: 389 View My Garage	When I first boost it (stock internals) I'm going to try the 3.91's with the stock diff.. When I go all out w/cam, heads and manifold and forged internals with the procharger and more boost, then I'm going with the Hammerhead with 4.11's, just for the fact it's a better 1/4 mile gear and still has good street matters, could even get away with a 4.33 on the street with the overdrives these days. I'm talking about long fairly hi speed drives. But I've seen streeters with lower then 5.14's! In other words that was probably already mentioned it's always better to go with the lowest gear you want to tolerate on the street opposed to better track times, after all I guess it depends on where you drive the car the most. Then you have the bragging rights of course... Everybody is different. But Everybody wants to go fast! __________________ SLP- long tube headers, hi flow cats w/full SLP 3'' PowerFlo exhaust incl/X-pipe, 160 degree stat, SLP Blackwing CAI. Dyno tuned by ECS-407/409RWHP&TQ. BMR- trailing arms w/poly knuckle bushings, toe links, cradle bushings and differential bushings. QA1 rear lower control arms. Hurst short throw shifter, SS- level 4 axles, DSS- aluminum driveshaft, Pfadt- sport 1.5" rear sway-bar. SPOHN 1.25" front sway-bar. Monster LT1-S twin clutch. Prothane motor mounts. Best 1/4 mile so far- 12:70ET @ 112.24 MPH w/ 2.06 second 60'. SOLD. Last edited by 10 2SS/RS 6M; 09-08-2013 at 09:27 PM.

09-14-2013, 01:18 PM	#30
BiggFoot Drives: 2010 Camaro (M6) 1000+ HP SBE Join Date: Jun 2011 Location: Houston Posts: 1,391	I have an M6 with Strange 4.11 gears and they pull like a freight train but you better be ready to shift fast or your hitting the limiter in no time flat. I wont post it here due to rules, but if you want to see a 10 - 120 mph pull with 4.11 gears go to youtube and search for bigggggfoot. You will see how fast the rpms rev in each gear and how quick the shifts are. Redline is between 125-130 in 4th gear with the 4.11 gears in my A6 BUT that is on 22's. __________________ F-1X, Cog Drive, ATI Super Pulley/Sprag ~ 19 psi Blower Cam Brodix BP BR 3 Heads Kooks LT Headers and full 3" exhaust Fore Triple Pump Fuel System with ID 1700X Injectors - E85 conversion DSS 9” Conversion (1400 hp axles, driveshaft, pumpkin) & Strange 3.70 gears McLeod RXT Twin HD Clutch & Upgraded Slave RPM Level VII TR6060 BMR Drag Suspension Package w/Strange shocks Carlyle 15" and M/T ET Street R radials 10.1 @ 143 mph 1/4 mile

11-13-2013, 01:56 AM	#34
6bangerBOOM Drives: 2016 1SS SW Join Date: Jun 2013 Location: N/A Posts: 1,443	Great write up. I'm about to slap 3.91's in my V6 and wanted to know what transmission gear were you using to make your calculations? I crunched some numeros and came up with 70mph at 2162rpm in 6th (0.67:1) with 28.5" wheels. Did I do this right?

11-13-2013, 02:21 AM	#35
toNspahreP Account Suspended Drives: SS Join Date: Aug 2013 Location: jawja Posts: 128	http://www.car-videos.net/tools/speedrpm.asp?

11-19-2013, 05:04 PM	#37
not Account Suspended Drives: Camaro 2SS/RS Join Date: Sep 2013 Location: New Hampshire Posts: 341	Mr. Chase, You alluded to suggesting the 3.73 over the 3.91 for the SS L99. Any reason? It seems the 20% increase would be dramatic but not cause too much loss of mpg... Am I off base or what?