3.45 vs 3.91 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

THATSS · 03-20-2018, 03:19 PM

Need the best advice for a DD/street car (no track). My car has LTs, ported TB and Mani, PMAS cai. Just a FBO car.

frankwjr · 03-20-2018, 04:54 PM

If ur happy now? if u want her to feel 1k lb lighter? 3.91's and start investin in rear tires! peace

acammer · 03-20-2018, 04:56 PM

Gears are a blast for the road or the track!

THATSS · 03-20-2018, 05:35 PM

I’ve seen people say it’s too much gear for the A6. So that’s the only reason I haven’t really done it. I want to buy the best one this week.

Bo White · 03-20-2018, 06:32 PM

3.91s or leave it stock

briancamaross · 03-20-2018, 07:11 PM

I have. 3.91 rear gears one of the best mods to do makes the car feel a lot
Lighter.

acammer · 03-20-2018, 07:46 PM

Quote:

Originally Posted by THATSS

I’ve seen people say it’s too much gear for the A6. So that’s the only reason I haven’t really done it. I want to buy the best one this week.

Possibly for power adder A6 cars - but for a bolt on car like the OPs they should be awesome!

havelegs · 03-21-2018, 01:20 PM

how has the 3.91 changed your acceleration times? like a 0-60 run or a 1/4 run?

Pro-tuned · 03-21-2018, 04:59 PM

To Select the proper ratio would depend on many factors and use of vehicle.

THATSS · 03-22-2018, 02:07 PM

Quote:

Originally Posted by Pro-tuned

To Select the proper ratio would depend on many factors and use of vehicle.

I daily drive the car but go out every weekend and do pulls on highway with everyone.. no track

hammdo · 03-22-2018, 02:30 PM

3.91s in a bolt on/stock A6 is the ticket...

Then I went FI, dropped down to 3.45 and sold the 3.91s...

-Don

xc_SS/RS · 03-22-2018, 02:31 PM

Quote:

Originally Posted by THATSS

I daily drive the car but go out every weekend and do pulls on highway with everyone.. no track

go 3.91's if you want to beat more people lol

Pro Stock John · 03-22-2018, 02:32 PM

3.45's not even worth it IMO.

I was already going 112 when I added 3.91s, and I hit 115mph and after the swap I was running 114 and 115 mph a few times.

havelegs · 03-22-2018, 04:11 PM

Please, someone, tell me how this has increased the 0-60 and/or 1/4 runs. Does anyone have a before and after video?

03-20-2018, 03:19 PM	#1
THATSS Drives: 2014 2SS L99 Join Date: Apr 2017 Location: Edinburg, Tx Posts: 8	3.45 vs 3.91 Need the best advice for a DD/street car (no track). My car has LTs, ported TB and Mani, PMAS cai. Just a FBO car.

03-20-2018, 04:54 PM	#2
frankwjr Drives: 2010 SS 2SS M6 Join Date: Aug 2016 Location: Smithsburg, Md. Posts: 2,445	If ur happy now? if u want her to feel 1k lb lighter? 3.91's and start investin in rear tires! peace __________________ 2010 SS 2SS M6 - Tune by RDP dynoSteve!(Woot) - Daily Driver - *150K!* - All work by me...

03-20-2018, 04:56 PM	#3
acammer GPI Sales Consultant Drives: 2011 Camaro 2SS SGM Join Date: Jul 2016 Location: Weedsport, NY Posts: 2,822 View My Garage	Gears are a blast for the road or the track! __________________ GPI Max Package 2.0: Brodix BR7 heads/GPI porting, MAX3 cam, ST2116LSR, BSR Max Lift rockers, LS7 LSXR with 103mm TB, Vararam OTR, Mcleod RXT, G-Force/Strange 9" IRS setup with 4.63 gear. 551whp, 11.1@124mph. *Got a question about a GPI product? Feel free to shoot me a message!*

03-20-2018, 06:32 PM	#5
Bo White Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012 Location: Vance Alabama Posts: 8,021	3.91s or leave it stock __________________ Retired wanna be cylinder head porter 2015 2SS 1LE Clutch reservoir, Vararam DRX, ported TB, TSP 2" headers, MGW shifter Totalled: 2010 1SS Wilkes Performance/Eagle 416 shortblock, TSP custom valvetrain, PRC 260 heads, Edelbrock Pro Flo 102, th400 swap, 8" PTC 5500 stall= 535/435 at the wheels tuned Gen 3 Performance and Dyno 10.97 @ 124 full weight in 3100 DA CamaroFest X

03-20-2018, 07:11 PM	#6
briancamaross Drives: 2011 ss 2ss auto camaro Join Date: Mar 2015 Location: mary esther florida Posts: 385 View My Garage	I have. 3.91 rear gears one of the best mods to do makes the car feel a lot Lighter. __________________ 2011 2ss white Camaro mods are texas speed stage 4 cam 235/239 Texas speed 2inch headers no cats magna flow bullet mufflers gpi rod mod ,circle d 4000-4200 5c stall. 3.91 gears vararm cai power wedge.

03-20-2018, 05:35 PM	#4
THATSS Drives: 2014 2SS L99 Join Date: Apr 2017 Location: Edinburg, Tx Posts: 8	I’ve seen people say it’s too much gear for the A6. So that’s the only reason I haven’t really done it. I want to buy the best one this week.

03-21-2018, 01:20 PM	#8
havelegs Drives: '23 LT1 A10 Join Date: Oct 2015 Location: Austin Texas Posts: 1,010	how has the 3.91 changed your acceleration times? like a 0-60 run or a 1/4 run?

03-21-2018, 04:59 PM	#9
Pro-tuned Angewendet Ingenieur Drives: 14 Camaro ZL1 Join Date: Apr 2015 Location: USA Posts: 401	To Select the proper ratio would depend on many factors and use of vehicle. __________________ ———— LQ9, Iron Block, Forged internals, 408CI, Jannetty custom cam, TS short block, Whipple, Hardened Jackshaft, PRC 260, 2X3 Dynatech Full Competition, HF Cats, CAI, NW 103, Chee, ID 1300, COPO Breather, MSD, Fore Dual Pump, ultratorque, E85, dual Meth, True Trac, 3:45, 1500hp axle-shafts, DSS CF, BMR, custom Pearl/Candy paint by Jaidah.

03-22-2018, 02:30 PM	#11
hammdo 'It's an experiment' Drives: [COTW 2/09/15] '11 GPI LSA SC Z/LE Join Date: May 2014 Location: Dallas TX Posts: 8,695 View My Garage	3.91s in a bolt on/stock A6 is the ticket... Then I went FI, dropped down to 3.45 and sold the 3.91s... -Don __________________ 747 RWHP 794 RWTQ "Horsepower sells cars, torque wins races." - Enzo Ferrari See My Build: http://www.camaro5.com/forums/showthread.php?t=385577

03-22-2018, 02:32 PM	#13
Pro Stock John Writer Drives: 2010 SS / 1967 Camaro Join Date: May 2009 Location: Chicago, IL Posts: 7,216	3.45's not even worth it IMO. I was already going 112 when I added 3.91s, and I hit 115mph and after the swap I was running 114 and 115 mph a few times. __________________ PROJECT HEAVY CHEVY Camaro Now: Mods for the Masses Part I \| Part II 13.15@106 1.95 \| 100% Stock 12.37@112 1.85 \| + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune 12.06@113 1.70 \| + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune 11.84@115 1.59 \| + 3.91s + Race Star 17x7 Fronts 10.90@125 1.47 \| + GPI VVT Cam + BW Ported Heads + CD 3800

03-22-2018, 04:11 PM	#14
havelegs Drives: '23 LT1 A10 Join Date: Oct 2015 Location: Austin Texas Posts: 1,010	Please, someone, tell me how this has increased the 0-60 and/or 1/4 runs. Does anyone have a before and after video? __________________ 24 LT1 M6 Sharkskin Metallic 14 Mazda Mazda3 S Grand Touring (Daily)