Finally bought 3.91 gears - Page 3 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

SS PANTHER · 07-19-2015, 09:33 PM

Quote:

Originally Posted by 10 Silver Bullet

Man I am really torn on 3.73s or 3.91s I ran a ls3 on the track this weak end and beat him by 3 lengths in the 1/8 and a nose in the 1/4. Can someone help me with some advice that has experience in the L99 A6?

I went with the LPE AAM 3.70 gears as I think it was the best overall gear for my applications, autox, canyon carving and spirited driving. I could still go f.i. if I decide to go that route, whereas you would have to do a gear change with the 3.91's. The down side is the 3.70's are almost $400 more. RPM's at 70mph is ~150 less than the 3.91's and the 3.70 may be good for an additional .5-1mpg if that's a concern.

10 Silver Bullet · 07-20-2015, 02:14 PM

Thx mine is for straight line application but it's my wife's grocery getter so still torn!

Pro Stock John · 07-20-2015, 02:16 PM

I like my 3.91 gears. I am doing 2200 at 70.

10 Silver Bullet · 07-20-2015, 03:21 PM

Did it make a huge impact on mpg

Pro Stock John · 07-20-2015, 03:39 PM

It's had some impact, but I don't track my mpg.

10 Silver Bullet · 07-20-2015, 04:03 PM

How is it launching and what mods do you have

07-20-2015, 02:16 PM	#31
Pro Stock John Writer Drives: 2010 SS / 1967 Camaro Join Date: May 2009 Location: Chicago, IL Posts: 7,216	I like my 3.91 gears. I am doing 2200 at 70. __________________ 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

07-20-2015, 03:39 PM	#33
Pro Stock John Writer Drives: 2010 SS / 1967 Camaro Join Date: May 2009 Location: Chicago, IL Posts: 7,216	It's had some impact, but I don't track my mpg. __________________ 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

07-20-2015, 02:14 PM	#30
10 Silver Bullet Drives: 2010 Silver SS2 Join Date: Dec 2014 Location: Littlefield,Texas Posts: 183 View My Garage	Thx mine is for straight line application but it's my wife's grocery getter so still torn!

07-20-2015, 03:21 PM	#32
10 Silver Bullet Drives: 2010 Silver SS2 Join Date: Dec 2014 Location: Littlefield,Texas Posts: 183 View My Garage	Did it make a huge impact on mpg

07-20-2015, 04:03 PM	#34
10 Silver Bullet Drives: 2010 Silver SS2 Join Date: Dec 2014 Location: Littlefield,Texas Posts: 183 View My Garage	How is it launching and what mods do you have