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Cutting 60' times #1328706 10/30/12 02:58 PM 10/30/12 02:58 PM
Joined: Mar 2003 Posts: 710 Harrisburg Pa. 17112 M moparmikethree OP super stock
moparmikethree OP super stock M Joined: Mar 2003 Posts: 710 Harrisburg Pa. 17112	With all things being the same, how much of an improvement will you see changing from a 3:23 gear to a 3:91 gear set?

Re: Cutting 60' times [Re: moparmikethree] #1328707 10/30/12 03:06 PM 10/30/12 03:06 PM
Joined: Mar 2008 Posts: 5,746 Ontario, Canada Dodgem master
Dodgem master Joined: Mar 2008 Posts: 5,746 Ontario, Canada	Should give you over .10 in the 60 foot if you don't spin but will improve numbers all the way down the track.

Re: Cutting 60' times [Re: Dodgem] #1328708 10/30/12 03:16 PM 10/30/12 03:16 PM
Joined: Jan 2003 Posts: 33,003 Grand Prairie,Texas stumpy I Win
stumpy I Win Joined: Jan 2003 Posts: 33,003 Grand Prairie,Texas	Plus you will raise the cruising rpm by about 600rpm.

Re: Cutting 60' times [Re: moparmikethree] #1328709 10/30/12 05:21 PM 10/30/12 05:21 PM
Joined: Aug 2003 Posts: 43,347 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,347 Bend,OR USA	Quote: With all things being the same, how much of an improvement will you see changing from a 3:23 gear to a 3:91 gear set? Maybe none Maybe some Every car is different, the complete package has a lot to do with the results Heavy car that dosen't spin the tires will see some possible benefits, a light weight car that spins the tires with the 3.23 ratio now will problly not see a reduction in the 60 ft times, probally spin worst Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Cutting 60' times [Re: Cab_Burge] #1328710 10/31/12 01:19 AM 10/31/12 01:19 AM
Joined: Nov 2004 Posts: 638 South East VA J Joel71 mopar
Joel71 mopar J Joined: Nov 2004 Posts: 638 South East VA	My Satellite will 60 ft within .02 with either a 26" slick or a 28" drag radial and a 3:23 gear. Both hook well so the difference in tire diameter (same as a gear change) is next to nothing. The taller tire has had the best 60 ft. The other thing I see is more MPH with the tall tire. Quarter mile ets are a bit lower with the 28" also. I have run all the following on my car with the same gear and the only real difference is using a sticky tire vs a real street tire. Real street tires: 215/75-14 (26.5") 235/75-15 (29") 255/60-15 (27") 295/50-15 (26.5") Sticky race tires: 26X10-15 (26") slick 275/60-15 (28") drag radial The best time ever...13.06 The worst best time for any of the street tires...13.40 The difference mostly is having a sticky tire that will hook. If all these were the same compound there might be about .03 to .05 between all of them. For my car lower gear hurts it all the way plus I will not have a street car that I can't cruse at 70+ MPH all day in. If it's nothing but a track car that would be different.

Re: Cutting 60' times [Re: moparmikethree] #1328711 10/31/12 08:11 AM 10/31/12 08:11 AM
Joined: Sep 2004 Posts: 22,873 Chicken coop dustergirl340 Chicken Little
dustergirl340 Chicken Little Joined: Sep 2004 Posts: 22,873 Chicken coop	I saw a far greater improvement in sixty foot times by using a quality converter (PTC) than changing from 3.23's to 3.91's. Around town fun factor is higher with the 3.91's, freeway driving is less fun. A quality converter will also lower cruising RPM's by a couple hundred.

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