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Changed from 5.14 to 3.50 #684051
04/29/10 11:15 PM 04/29/10 11:15 PM
Joined: Oct 2009
Posts: 1,267
North, Alabama
D-50 Offline OP
pro stock
D-50  Offline OP
pro stock

Joined: Oct 2009
Posts: 1,267
North, Alabama
I have a 360/380 hp crate engine in my D-50 truck. I was running 5.14 gears and my best E.T. in the 1/8 was a 7.46 @ 91 mph. I shift at 5600 rpm. Last weekend I put 3.50 gears in it. I went to T&T tonight and run it. How much do you think it slowed down ? I crossed the finish line in 2nd gear.

5954990-CIMG0081.JPG (75 downloads)
1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...
Post deleted by Defbob [Re: D-50] #684052
04/29/10 11:19 PM 04/29/10 11:19 PM

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Re: Changed from 5.14 to 3.50 #684053
04/29/10 11:22 PM 04/29/10 11:22 PM
Joined: Jun 2003
Posts: 9,225
Charleston
S
sixpackgut Offline
Drag Week Mod Champion
sixpackgut  Offline
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Joined: Jun 2003
Posts: 9,225
Charleston
2 tenths

Gen 3 power 6.22@110, 9.85@135
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performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
Re: Changed from 5.14 to 3.50 [Re: D-50] #684054
04/29/10 11:39 PM 04/29/10 11:39 PM
Joined: Aug 2003
Posts: 43,190
Bend,OR USA
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Cab_Burge Offline
I Win
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Joined: Aug 2003
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Bend,OR USA
Quote:

I have a 360/380 hp crate engine in my D-50 truck. I was running 5.14 gears and my best E.T. in the 1/8 was a 7.46 @ 91 mph. I shift at 5600 rpm. Last weekend I put 3.50 gears in it. I went to T&T tonight and run it. How much do you think it slowed down ? I crossed the finish line in 2nd gear.

Not much,(at tenth or two max) especailly if your spinning the tires with the 5:14 gears

Last edited by Cab_Burge; 04/30/10 11:51 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Changed from 5.14 to 3.50 [Re: D-50] #684055
04/29/10 11:56 PM 04/29/10 11:56 PM
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
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Sport440 Offline
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Canton, Ohio
Quote:

I have a 360/380 hp crate engine in my D-50 truck. I was running 5.14 gears and my best E.T. in the 1/8 was a 7.46 @ 91 mph. I shift at 5600 rpm. Last weekend I put 3.50 gears in it. I went to T&T tonight and run it. How much do you think it slowed down ? I crossed the finish line in 2nd gear.




You may of increased your ET. 5.14 gears are pretty steep, and can make that first gear pretty useless depending on tire size and tranny gear.

You know this allready, I can tell.

Your first gear is your Best accelerating gear.

With a switch in axel gearing even a second gear tranny combo can equal a first gear tranny combination for a equal gear multiplication. mike
Post deleted by Defbob [Re: Sport440] #684056
04/30/10 12:25 AM 04/30/10 12:25 AM

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Re: Changed from 5.14 to 3.50 #684057
04/30/10 02:05 AM 04/30/10 02:05 AM
Joined: May 2004
Posts: 2,864
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Irun5snd8th Offline
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Maybe .08

AFCO, Rons Fuel Injection sponsored Dodge Challenger Mention Street Lethal Motorsports
Re: Changed from 5.14 to 3.50 [Re: D-50] #684058
04/30/10 07:59 AM 04/30/10 07:59 AM
Joined: Mar 2008
Posts: 5,746
Ontario, Canada
Dodgem Offline
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Dodgem  Offline
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Joined: Mar 2008
Posts: 5,746
Ontario, Canada
4 tenths and 2 mph

Re: Changed from 5.14 to 3.50 [Re: D-50] #684059
04/30/10 10:22 AM 04/30/10 10:22 AM
Joined: Dec 2007
Posts: 622
NC
chris3 Offline
mopar
chris3  Offline
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Joined: Dec 2007
Posts: 622
NC
I'm waiting for you to tell me the results. I have just changed from 513 to 488. How much does your truck weigh? What trans?
Post deleted by Defbob [Re: chris3] #684060
04/30/10 10:49 AM 04/30/10 10:49 AM

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Re: Changed from 5.14 to 3.50 [Re: D-50] #684061
04/30/10 02:52 PM 04/30/10 02:52 PM
Joined: Sep 2004
Posts: 1,828
houston texas
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gremlinsteve Offline
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ill guess...7.80's

steve

if You Like Gremlinsteve. Gremlinsteve Likes You.
Re: Changed from 5.14 to 3.50 [Re: D-50] #684062
04/30/10 03:54 PM 04/30/10 03:54 PM
Joined: Aug 2003
Posts: 43,190
Bend,OR USA
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Cab_Burge Offline
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Bend,OR USA
Okay, time for the results

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Changed from 5.14 to 3.50 [Re: Cab_Burge] #684063
04/30/10 04:27 PM 04/30/10 04:27 PM
Joined: Oct 2004
Posts: 6,293
Northeast, Alpine, NY
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9 Sec Phill Offline
On a road near you
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On a road near you
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Northeast, Alpine, NY
I think it didnt slow down, it went faster....Phill
Re: Changed from 5.14 to 3.50 #684064
04/30/10 05:29 PM 04/30/10 05:29 PM
Joined: Jun 2003
Posts: 9,225
Charleston
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sixpackgut Offline
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Charleston
Quote:

not to hijack Glenns thread, but a buddy went from 4.56 to 5.38s and picked up 4 tenths. 7.80s to 7.40s in the 1/8. heavy car small motor.




Gen 3 power 6.22@110, 9.85@135
Follow @g3hemiswap on instagram

performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
Re: Changed from 5.14 to 3.50 [Re: sixpackgut] #684065
04/30/10 06:13 PM 04/30/10 06:13 PM
Joined: Oct 2009
Posts: 1,267
North, Alabama
D-50 Offline OP
pro stock
D-50  Offline OP
pro stock

Joined: Oct 2009
Posts: 1,267
North, Alabama
My best ET with the 5.14 was 1.54 60 ft. 7.46 @ 91 mph crossing the finish line at about 6000 rpm in high gear. It has a 904 trans. Last night with the 3.50 gears I had a best of 1.65 60ft., 7.66 @ 90mph crossing the stripe in 2nd gear. It has 315/60 15 M/T drag radials on it.

5956062-CIMG0081.JPG (29 downloads)
1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...
Post deleted by Defbob [Re: sixpackgut] #684066
04/30/10 06:19 PM 04/30/10 06:19 PM

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Re: Changed from 5.14 to 3.50 [Re: D-50] #684067
04/30/10 06:23 PM 04/30/10 06:23 PM
Joined: Feb 2007
Posts: 5,080
organ
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maximum entropy Offline
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organ
i bet with a different converter you could get your .2 back.

for what is the good life if not doing things thoughtfully?
Re: Changed from 5.14 to 3.50 #684068
04/30/10 06:31 PM 04/30/10 06:31 PM
Joined: Oct 2009
Posts: 1,267
North, Alabama
D-50 Offline OP
pro stock
D-50  Offline OP
pro stock

Joined: Oct 2009
Posts: 1,267
North, Alabama
The first pass I made it felt so sick I thought I had it second gear. I also tried something else last night I put my old NOS plate on this week and sprayed it with 47 fuel/53 n2o jets suppose to be 100 shot.

5956093-CIMG0081.JPG (40 downloads)
1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...
Re: Changed from 5.14 to 3.50 [Re: D-50] #684069
04/30/10 08:36 PM 04/30/10 08:36 PM
Joined: Oct 2009
Posts: 1,267
North, Alabama
D-50 Offline OP
pro stock
D-50  Offline OP
pro stock

Joined: Oct 2009
Posts: 1,267
North, Alabama
Forgot to tell what it ran on 100 shot, 7.14@95mph, 1.53 60 ft.Thinking about trying 125 next.

5956278-CIMG0081.JPG (52 downloads)
1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...
Re: Changed from 5.14 to 3.50 [Re: D-50] #684070
04/30/10 10:24 PM 04/30/10 10:24 PM
Joined: Nov 2009
Posts: 5
Alabama
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cj38 Offline
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Joined: Nov 2009
Posts: 5
Alabama
I was surprised it did'nt loose more et. I was expecting 7.80's/7.90's.
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