What gear set for a Dana ?
#854677
11/15/10 06:33 PM
11/15/10 06:33 PM
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Joined: Nov 2006
Posts: 100 Winnipeg, Canada
StrokerDart
OP
member
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OP
member
Joined: Nov 2006
Posts: 100
Winnipeg, Canada
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I'm looking to switch from the 4.56 gears I have in my Moser Dana 60 to a 4.30 ... I think . It's a street/strip 76 Dart Sport weighing 3200, 455cid small blk, 727 with trans brake, 30" slick and has run a best of 9.76 @ 137 open exhaust ... shift light is at 7200 so shift probably occurs at 7400 and the light is on at the 1000' mark so I'm crossing the stripe at 7400+ Peak HP/TQ throught the mufflers from the chassis Dyno was 585 at 6750 and then drops to 573 and holds there till 7200 (end of run) Peak TQ was 482 at 6350 Am I over geared ??? I'm thinking a 4.30 would bring it down to the 7000 ish mark and I might pick up some et/mph Any thoughts ?
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Re: What gear set for a Dana ?
[Re: S/ST 3040]
#854679
11/15/10 09:09 PM
11/15/10 09:09 PM
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Joined: Jan 2003
Posts: 4,616 Kissimmee Fl.
dusturbd340W5
master
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master
Joined: Jan 2003
Posts: 4,616
Kissimmee Fl.
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I am running 4.88's but I am running a 32" tire and I am trapping about 74-7500
70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake
best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4
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Re: What gear set for a Dana ?
[Re: S/ST 3040]
#854681
11/15/10 09:16 PM
11/15/10 09:16 PM
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Joined: Jan 2003
Posts: 4,616 Kissimmee Fl.
dusturbd340W5
master
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master
Joined: Jan 2003
Posts: 4,616
Kissimmee Fl.
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other than a little less trap RPM what else do you think it would change?
70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake
best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4
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Re: What gear set for a Dana ?
[Re: S/ST 3040]
#854683
11/15/10 09:30 PM
11/15/10 09:30 PM
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Joined: Jan 2003
Posts: 4,616 Kissimmee Fl.
dusturbd340W5
master
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master
Joined: Jan 2003
Posts: 4,616
Kissimmee Fl.
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well I will just leave it for now we only get to run a few races a year that are 1/4 95% of every thing down here is 1/8 so I don't spin it that high very often.
70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake
best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4
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Re: What gear set for a Dana ?
[Re: dusturbd340W5]
#854684
11/15/10 09:38 PM
11/15/10 09:38 PM
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Joined: Jul 2006
Posts: 4,595 On the south side of Nowhere
S/ST 3040
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master
Joined: Jul 2006
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On the south side of Nowhere
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Years ago, there was a guy back home who had a Dana 60 in his 455/4-speed Trans Am. It had 4.88s (I don't remember tire size). Anyway, he used to run it at Kanawha Valley (1/8 mile) I told him it would probably be quicker with 4.10s. He switched to 4.10s and it was quicker. I don't remember how much but, I know his car was NOT light. True story.
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Re: What gear set for a Dana ?
[Re: StrokerDart]
#854686
11/15/10 10:22 PM
11/15/10 10:22 PM
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Joined: Nov 2003
Posts: 5,160 Texas
dannysbee
master
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master
Joined: Nov 2003
Posts: 5,160
Texas
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Dr. Diff has light weight 4.30's.
Getting old just means you were smarter than some and luckier than others.
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Re: What gear set for a Dana ?
[Re: StrokerDart]
#854691
11/16/10 09:17 AM
11/16/10 09:17 AM
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Joined: Feb 2008
Posts: 716 Central TEXAS!!!!
sr4440
super stock
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super stock
Joined: Feb 2008
Posts: 716
Central TEXAS!!!!
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Make sure you get the correct series of gear, that 4.56 should be a series 4 and the 4.10 MAY be a series 3. The 4.30 could be either or
Joe
Last edited by sr4440; 11/16/10 09:18 AM.
Without Data, you’re just another guy with an opinion.
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Re: What gear set for a Dana ?
[Re: S/ST 3040]
#854696
11/17/10 03:41 PM
11/17/10 03:41 PM
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Joined: Sep 2007
Posts: 238 Roseau, MN
1976 Aspen
enthusiast
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enthusiast
Joined: Sep 2007
Posts: 238
Roseau, MN
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Quote:
You don't want to run a Pro Gear on the street. The street gear is harder and work in 98% of drag applications.
My car is almost the same deal and I broke my Richmond 4.56's the last race of the season after one full season on them. So does my car fall into the 2% category??? Not likely. I'm switching to Pro Gears and not looking back. By the way, Pro Gears are softer not harder. Hard=brittle, soft= malleable...
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