727 low gear set
#2384027
10/08/17 06:23 PM
10/08/17 06:23 PM
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Joined: Nov 2010
Posts: 3,696 jersey
Spaceman Spiff
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master
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OP
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Joined: Nov 2010
Posts: 3,696
jersey
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Does anyone make a gear set for a 727 that 3.00, 2.00, and 1.00? A friend has this done about 20 years ago to a TH400, so he could run a mild gear out back, and still have the multiplication.
This is going into a 4600 wagon, 526 stoker, currently has 3.73's. i'd like to go down to 3.23's for highway driving, but would like to keep the tq multiplication. This is a '65 cable shift trans, a GV is out of the equation.
526 cubes of angry wedge, pushbutton shifted, 9 passenger killer!
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Re: 727 low gear set
[Re: Spaceman Spiff]
#2384040
10/08/17 06:50 PM
10/08/17 06:50 PM
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crabman173
Unregistered
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crabman173
Unregistered
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Your 526 Is the TQ multiplier! It will do great with a 3.23 --just try it!
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Re: 727 low gear set
[Re: Spaceman Spiff]
#2384041
10/08/17 06:50 PM
10/08/17 06:50 PM
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Joined: Dec 2005
Posts: 11,608 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,608
Fulton County, PA
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I expect you would have to go with the 904 lightwight internals and case mods to be able to do that with a 727. Not really a street combination.
If the results don't match the theory, change the theory.
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Re: 727 low gear set
[Re: Spaceman Spiff]
#2384088
10/08/17 08:30 PM
10/08/17 08:30 PM
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Joined: Nov 2010
Posts: 3,696 jersey
Spaceman Spiff
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My concern, for wanting to do this, is the weight. I see plenty of strokers in lighter cars with 3.23’s, but not a car that weighs 4,600lbs.
526 cubes of angry wedge, pushbutton shifted, 9 passenger killer!
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Re: 727 low gear set
[Re: Spaceman Spiff]
#2384211
10/09/17 12:24 AM
10/09/17 12:24 AM
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Joined: May 2003
Posts: 6,566 Downtown Roebuck Ont
Twostick
Still wishing...
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Still wishing...
Joined: May 2003
Posts: 6,566
Downtown Roebuck Ont
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What are you running for a converter? If it is anywhere close to being right for your current combo you might only lose a few tenths going to 3.23's. It should still have no problems embarrassing Porsches. Kevin
Last edited by Twostick; 10/09/17 12:25 AM.
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Re: 727 low gear set
[Re: Spaceman Spiff]
#2384217
10/09/17 12:46 AM
10/09/17 12:46 AM
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Joined: Oct 2011
Posts: 326 Alberta
Wookie316
enthusiast
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enthusiast
Joined: Oct 2011
Posts: 326
Alberta
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I run a low gear set in my 4100 tank. I 60 around 1.42-1.44 on motor with a 9.5” converter. I run a 30” Radial slick and a 4.30 gear set in my Dana. Getting a big car to move quick is different than moving a small car. I run a solid roller 268/276 and go through the traps around 7000 at 132 and change. 10.14 is best I’ve run on motor. Big cars can move. Takes a bit more planning and strong parts. Overkill on parts LOL.
1971 Plum Crazy Super Bee. 572 World Aluminum block with a Cope 727 & Dana 4.10 out back. 9.88 @ 138 with a 1.35 60 NA. Dialed back to 10.0’s. 4000 lbs with me in it.
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Re: 727 low gear set
[Re: Spaceman Spiff]
#2384455
10/09/17 02:23 PM
10/09/17 02:23 PM
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Joined: Feb 2012
Posts: 368 michigan
turbo toad
enthusiast
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enthusiast
Joined: Feb 2012
Posts: 368
michigan
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I have heard that some of the 727 out of motor homes have a low gear set. Might be worth looking into.
Check out my build on Facebook Ttoad Hurley its updated regularly
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Re: 727 low gear set
[Re: turbo toad]
#2384511
10/09/17 04:04 PM
10/09/17 04:04 PM
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Joined: Jan 2003
Posts: 25,870 Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,870
Rio Linda, CA
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I have heard that some of the 727 out of motor homes have a low gear set. No 727 ever came from the factory with a low gear set.
The INTERNET, the MISinformation superhighway
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Re: 727 low gear set
[Re: Spaceman Spiff]
#2384551
10/09/17 05:23 PM
10/09/17 05:23 PM
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Joined: Oct 2007
Posts: 4,209 New York
polyspheric
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master
Joined: Oct 2007
Posts: 4,209
New York
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WRT 3.00, 2.00, and 1.00
If there were a 3.00:1 low gear, 2nd would be closer to 1.60.
Boffin Emeritus
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Re: 727 low gear set
[Re: Spaceman Spiff]
#2384723
10/09/17 09:20 PM
10/09/17 09:20 PM
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Joined: Jan 2003
Posts: 10,010 Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
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Posts: 10,010
Frostbitefalls MN (Rocky&Bullw...
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With that many cubes I would be tempted to try a 2.96 rear gear, as long as you have a good converter that has a decent stall rpm. I only ran .20 slow (10.40 on a 10.20 dial) accidently leaving in second gear. That is an SLR of 5.9 (4.10x 1.45) versus 7.2 , a 2.45 and 2.96 combo.
Last edited by gregsdart; 10/09/17 09:25 PM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: 727 low gear set
[Re: Spaceman Spiff]
#2384729
10/09/17 09:31 PM
10/09/17 09:31 PM
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Joined: Nov 2010
Posts: 3,696 jersey
Spaceman Spiff
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I'll have the car out this weekend, if the weather is decent. I've never bothered to check where the converter actually stalls. Am i looking for brake stall or flash stall? It's a manual valve body, so to check flash stall, just be in third at about 20mph, then nail it?
I live in an area with lots of stop and go driving, around town lights, etc. I usually just leave it in drive around town, and come off a stop easy. it's a pain to keep pushing buttons all the time!
526 cubes of angry wedge, pushbutton shifted, 9 passenger killer!
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