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Re: Whats the best cruising gear?
[Re: 70RT Charger]
#320857
05/17/09 08:25 PM
05/17/09 08:25 PM
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Joined: Oct 2004
Posts: 601
Clintwood VA
johnedod
mopar
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mopar
Joined: Oct 2004
Posts: 601
Clintwood VA
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For cruising I like 3.23s.
Johnedod
68 Road Runner
71 Road Runner
78 Power Wagon
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Re: Whats the best cruising gear?
[Re: 70RT Charger]
#320858
05/17/09 08:42 PM
05/17/09 08:42 PM
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Joined: Jul 2008
Posts: 30,424
Florida STAYcation
dOc !
The village idiot's idiot
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The village idiot's idiot
Joined: Jul 2008
Posts: 30,424
Florida STAYcation
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THINK about it .... how often do you use a "cruiser" or streeter for stop-light/drag-strip action ? NOT MUCH. So I now have ...in a light-weight(for a B-body) car ..with a torquey 440 .... a 2.76 gear. I drive-it ... and LOVE IT. SURE ...it does not 60-foot like a 4.56 gear ... but for a streeter... you will LOVE the cruise-speed and MPG 
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Re: Whats the best cruising gear?
[Re: dOc !]
#320860
05/17/09 08:51 PM
05/17/09 08:51 PM
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Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo
Too Many Posts
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Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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Get an overdrive transmission. Best of both worlds. Why compromise? If you have a 4-gear, passon makes an o/d gearset or you could do a 70's/80's o/d 833 for cheap. If that doesn't sound appealing, play with this calculator: http://vexer.com/68rt/speed.htmlI've got 3.55's and a 727 and it's basically 3000rpm at 65mph. Livable but I don't like to see my motor revving that high needlessly so I have an overdrive trans in the garage waiting for me to get to it.
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Re: Whats the best cruising gear?
[Re: 1_WILD_RT]
#320866
05/17/09 09:24 PM
05/17/09 09:24 PM
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Joined: Jan 2008
Posts: 894
Connecticut, USA
sixty7gtx
super stock
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super stock
Joined: Jan 2008
Posts: 894
Connecticut, USA
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3.23 for my charger RT, 3.55 for the GTX. any taller may be too much for long distace?
1967 Plymouth GTX,
1968 HEMI, 4 Spd. Super Bee,
2010 Chrysler 300 Touring,
MOPAR = Machines Of Performance And Racing!!
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Re: Whats the best cruising gear?
[Re: sixty7gtx]
#320868
05/17/09 10:13 PM
05/17/09 10:13 PM
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Joined: Jun 2004
Posts: 3,319
Chicago Burbs
sthemi
master
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master
Joined: Jun 2004
Posts: 3,319
Chicago Burbs
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with the 4 speed I would recommend the 3.23, if you run taller (like 2.76) with the torquey 440 and the 4 speed in a heavy car the clutch will not be happy at all. I run a 275-70-15 on my stock 440 68 Charger and it is fine on the highway with excellent off the line. I also have a 68 300 with a stock 440 and 2.76 and it is a highway monster, but off the line is not so happy... 
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Re: Whats the best cruising gear?
[Re: DaytonaTurbo]
#320870
05/17/09 11:23 PM
05/17/09 11:23 PM
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Joined: Mar 2008
Posts: 571
Western NC
68Bullit
mopar
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mopar
Joined: Mar 2008
Posts: 571
Western NC
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Quote:
Get an overdrive transmission. Best of both worlds. Why compromise? If you have a 4-gear, passon makes an o/d gearset or you could do a 70's/80's o/d 833 for cheap. If that doesn't sound appealing, play with this calculator:
http://vexer.com/68rt/speed.html
I've got 3.55's and a 727 and it's basically 3000rpm at 65mph. Livable but I don't like to see my motor revving that high needlessly so I have an overdrive trans in the garage waiting for me to get to it.
Overdrives are totally the way to go. A Gearvendor is pricey, but It's paying for itself each time I drive the car. 4.30's and a Gearvendor behind my 904 with 25.7" tires puts me at 70 mph @ 3100 rpm (plus or minus a mile per hour or two). I just drove my car on the first small road trip yesterday after the GV install (about 1.5 hours each way). Man it was nice. In overdrive, I have the equivalent of a 3.35 gear.
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Re: Whats the best cruising gear?
[Re: DennisH ]
#320872
05/18/09 12:13 AM
05/18/09 12:13 AM
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Joined: Feb 2003
Posts: 10,200
Someplace you aren't
SomeCarGuy
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 10,200
Someplace you aren't
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3.23 has been the best for me. I drive a ton and those help a bunch.
On the eastern KY two lanes I don't think you will want a 2.94 or higher gear. I run into enough traffic over there that it would cause some extra shifting as the 3.23 almost does sometimes.
If you are running a stock size tire the 3.23 will turn plenty of RPMs on the interstate. A 3.55 would be getting close to unbearable for me. But if you find a deal on one I wouldn't turn it down, I know parts in our part of the world can be hard to come by and new stuff is spendy.
I want my fair share
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Re: Whats the best cruising gear?
[Re: DaytonaTurbo]
#320874
05/18/09 12:44 AM
05/18/09 12:44 AM
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Joined: Dec 2007
Posts: 18,157
Mass
DAYCLONA
I Live Here
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I Live Here
Joined: Dec 2007
Posts: 18,157
Mass
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Quote:
Get an overdrive transmission. Best of both worlds. Why compromise?
Exactly,......I enjoy 4:10 gears on the street,.......and with my Keisler 5spd TKO .64 OD they equate to 2.64's in 5th gear cruising on the interstate,......running a 275/60/15 tire, MPG can range as high as 22 MPG, and MPH in the 140/150 range with a 440/6, with 4:10's.......if "originality" is your thing,.....put a Passon transmission in it?, why compromise on rear gear sets, or desired tire size?
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