Autos with 3.91s? - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Rhino79 · 05-14-2013, 07:42 PM

mickey Thompson et street ii drag radials

Nightmare2012 · 05-14-2013, 07:51 PM

Awesome thanks!

Camarojt · 05-14-2013, 08:30 PM

Quote:

Originally Posted by Rhino79

mickey Thompson et street ii drag radials

^^+1

62nalide · 05-15-2013, 12:06 AM

Yes I will be running a drag tire so the 3.91 it is! Aggressive is what I want

62nalide · 05-15-2013, 12:11 AM

Quote:

Originally Posted by smokum

I have the adm gear swap. I installed 3:45 gears and it will lite up the 305's. I would maybe go 3:70 at the most. But once you get the hp up you will have a hard time finding traction. 3:91's are too aggressive. Unless your in the hunt for some serious burnouts.

How do you like those 3.45s? i spoke to ADM about the 3.91s I think thats more of the gear I'm looking for

Johnthegreat · 05-15-2013, 12:46 AM

What if u just have headers ,tune and intake is 3.91 still to aggressive

axis · 05-15-2013, 01:50 AM

Quote:

Originally Posted by 62nalide

How do you like those 3.45s? i spoke to ADM about the 3.91s I think thats more of the gear I'm looking for

If you have plans for FI in the near future, i'd probably go with the 3.45 rear gear. That way you won't have to swap back when you add it. Still should be a nice upgrade to what you're running now. If you're going to track it a lot, i'd go higher. I know Grocerygetter is running 3.70 with a vortech and first gear is pretty much worthless. Second isn't a whole lot better.

62nalide · 05-15-2013, 01:54 AM

Quote:

Originally Posted by axis

If you have plans for FI in the near future, i'd probably go with the 3.45 rear gear. That way you won't have to swap back when you add it. Still should be a nice upgrade to what you're running now. If you're going to track it a lot, i'd go higher. I know Grocerygetter is running 3.70 with a vortech and first gear is pretty much worthless. Second isn't a whole lot better.

Would like to play the NA game for a while, after the Turbo build the 3.27s go back in

RogerBzSS · 05-15-2013, 01:57 AM

BTW 3:91 Gear can be had via GM at acheaper cost..

K32 Camaro · 05-15-2013, 02:11 AM

^ Everyone offers the cheaper price bc they too get them from gm. I'd stay with the stock gear (and I did) Saves money. Get a 3400 stall and call it.

biggerisbetter · 05-15-2013, 08:01 AM

do it the 3:91's are an absolute blast. really makes this heavy pig roll.

SGOS252382 · 05-15-2013, 08:15 AM

Your setup will determine if 3:91s are needed.
In my car (bolt ons + 3200 stall), I have no need for 3:91s. My car is already a handful trying to get traction on the street with 305 series drag radials.

I wouldn't consider 3:91s unless your cammed and need the extra torque down low. Otherwise its just overkill and will cause traction issues and extra shifts down the track.

I know several L99 owneres that took out their aggressive gears (returned to stock) and now they run faster times at the track.

VADER SS L99 · 05-15-2013, 08:25 AM

I would agree that 3.91's are more for cammed auto cars. They would not be the most ideal gears for a bolt on only car with a single disk converter or FI due to traction issues and a shift into 5th which is no bueno. With the right converter, cam and tires they look to be a great gear as evidence from Rhino's set up shows it.

axis · 05-15-2013, 11:03 AM

Quote:

Originally Posted by VADER SS L99

shift into 5th which is no bueno.

This.

I know Ryan is hitting high 6k if not 7k, in 4th, as he crosses the line. If you don't raise your limiter that high, you'll be shifting into 5th just before the line.

05-15-2013, 12:06 AM	#18
62nalide Drives: 2013 SS Join Date: May 2013 Location: DFW Posts: 4,102	Yes I will be running a drag tire so the 3.91 it is! Aggressive is what I want __________________ https://frankensteined.net/ Martin@Frankensteined.net

05-15-2013, 01:57 AM	#23
RogerBzSS Drives: 11 IBM n White 2SS/RS M6 Join Date: May 2011 Location: Tewksbury Ma Posts: 358 View My Garage	BTW 3:91 Gear can be had via GM at acheaper cost.. __________________ Black CIA -Powder Coated Red Air Scoop - Vmax Ported Throttle Body - Ceramic Coated Dynatek Headers - High Flow Cats out thru factory Cat Back - JRE rough idle cam package - Trunion Upgrade - Valve Springs - Hardened Push rods - 3 bolt timing gear - SLP Under drive pully- Washer bottle relo kit - Hurst Short Throw Shifter with updated pin bushing from C5 member NH-SS - IdealG's improved Master Cylinder - GTO Clutch reservoir - L99 Brake Reservoir - Stainless Braided clutch line - wrapped up with a JRE Tune My SS layed down 462 hp on JRE's Superflow Dyno

05-15-2013, 08:01 AM	#25
biggerisbetter lll Drives: 2010 camaro ss L99 Join Date: Jan 2013 Location: new orleans Posts: 1,176	do it the 3:91's are an absolute blast. really makes this heavy pig roll. __________________ PERFORMANCE DYNATECH LT 1 7/8 HEADERS, CATLESS MID PIPES, CORSA CATBACK, CAI. COLD AIR INTAKE w/ SCOOP, 1LE 3:91 GEARS, LETHAL RACING PROWLER CAM, LETHAL RACING DYNO TUNE, ENERGY CRADDLE BUSHING INSERTS, PADDLE SHIFTER RELOCATE KIT, 449RWHP/438TQ APPEARANCE COPO HOOD, ZL1 SPOILER, SLP BLACKOUT PANEL, PLASTI DIP WHEELS, HERITAGE GRILL, RETRO SS EMBLEMS, WEATHER TECH FLOOR MATS, ORANGE STITCHING

05-15-2013, 08:25 AM	#27
VADER SS L99 Drives: 2013 A6 GT 5.0 Join Date: Nov 2009 Location: Edmond, OK Posts: 2,909	I would agree that 3.91's are more for cammed auto cars. They would not be the most ideal gears for a bolt on only car with a single disk converter or FI due to traction issues and a shift into 5th which is no bueno. With the right converter, cam and tires they look to be a great gear as evidence from Rhino's set up shows it. __________________ BLK/BLK 1SS/RS Ordered 11-01-2009 Took delivery 12-22-2009. Heads/cam/converter/bolt ons. SOLD Feb 2015 to fund 6th gen LT1 SS with 8L90E.

05-14-2013, 07:42 PM	#15
Rhino79 Drives: 2010 Camaro SS L99/Auto Join Date: Jul 2011 Location: Cabot, AR Posts: 2,827 View My Garage	mickey Thompson et street ii drag radials

05-14-2013, 07:51 PM	#16
Nightmare2012 come find out;) Drives: stockish 2012 camaro ss Join Date: Oct 2012 Location: speed county Posts: 2,166 View My Garage	Awesome thanks!

05-15-2013, 12:46 AM	#20
Johnthegreat Drives: 2012 2SS/RS black camaro Join Date: Jul 2011 Location: New York Posts: 516	What if u just have headers ,tune and intake is 3.91 still to aggressive

05-15-2013, 02:11 AM	#24
K32 Camaro V8 lounge member #5 Drives: 12 2SS Synergy Camaro, 05 PontiacG6 Join Date: Dec 2011 Location: Ohio Posts: 1,301	^ Everyone offers the cheaper price bc they too get them from gm. I'd stay with the stock gear (and I did) Saves money. Get a 3400 stall and call it.

05-15-2013, 08:15 AM	#26
SGOS252382 Drives: 2010 Camaro 2SS/RS Join Date: Mar 2008 Location: S.W. Florida Posts: 6,294	Your setup will determine if 3:91s are needed. In my car (bolt ons + 3200 stall), I have no need for 3:91s. My car is already a handful trying to get traction on the street with 305 series drag radials. I wouldn't consider 3:91s unless your cammed and need the extra torque down low. Otherwise its just overkill and will cause traction issues and extra shifts down the track. I know several L99 owneres that took out their aggressive gears (returned to stock) and now they run faster times at the track.