Lenco or Liberty?
#622476
02/23/10 10:54 PM
02/23/10 10:54 PM
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Joined: Jan 2003
Posts: 4,084
Indiana
W5Duster436
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Indiana
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Friend wants to convert his '67 GTX over to either a Lenco or perhaps Liberty manual trans? Which would be the best setup for this scenario? Obviously the Lenco can handle the power but how about Liberty?
Engine is a 540" Hemi with 10-71 blower and two 1150 Doms I believe. Whatever the biggest thing QFT had at the time was. HP is 12-1400? Long story there. Dana with locker and 4.10 and the chassis is 4 link certed to 8.50 I believe. This is primarily a street driven car.
Gonna change the induction to fuel injection and put a manual trans in. Which trans would work the best in this application?
Thx!
'70 Duster - SDSS 436 W5 4spd (Gone)
'71 Dodge D100
'70 Dodge W100
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Re: Lenco or Liberty?
[Re: gillman34]
#622478
02/23/10 11:12 PM
02/23/10 11:12 PM
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Joined: Jul 2003
Posts: 12,129
Cleveland
sunroofgtx
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I Live Here
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Posts: 12,129
Cleveland
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Give Justin Brangers a call. They do a ton of work on all of the top tranny's. Have most in stock, at all different levels needed. They are outside of Louisville. Tell Justin Rick sent you. http://www.brangersracing.com/
Join the quickest team in motorsports. Team FireCore. CustomWiresets.com
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Re: Lenco or Liberty?
[Re: sunroofgtx]
#622479
02/25/10 07:55 PM
02/25/10 07:55 PM
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Joined: May 2004
Posts: 12,397
Taxes & Virus's R-US, NY
Dragula
I Live Here
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I Live Here
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Taxes & Virus's R-US, NY
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Never driven a blown hemi, but I always wanted a manual trans behind my EFI Hemi, and with the power plant you describe, its going to need to be a clutchless trans. My vote would be for the lenco. Its a little more drag and heavier, but still very streatable. A littler noisy too....I have been wanting a Lenco drive (w/converter) for a long time or an st1200 (w/ clutch). For your application a Lenco drive 3-speed would be the ticket with all that torque on tap. Hemis rev so quick, I ave no idea how you would get the clutch in and the thing shifted in time, that's why if I did one, it would be a clutchless no atter what. http://www.racingjunk.com/category/1087/Racing_Transmissions/post/1786719/DONOVAN-LENCO-COAN.htmlFrom what I understand, the Liberty trans jumps out of gear when you lift, but I don't know if you physically held it in gear if it could be streeted. http://www.racingjunk.com/category/1262/Manual_Transmissions/post/1800696/LIBERTY-4-SPEED.html
Last edited by Dragula; 02/25/10 07:58 PM.
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Re: Lenco or Liberty?
[Re: CRE2004]
#622484
02/26/10 09:46 AM
02/26/10 09:46 AM
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Joined: Oct 2004
Posts: 8,165
Left Coast
BobR
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Left Coast
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Quote:
The torque that a 1200hp blown hemi produces would shred a DR4 in about a second and a half.
Just think of what it will do to his Dana/Locker combo?
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Post deleted by Defbob
[Re: BobR]
#622485
02/26/10 11:15 AM
02/26/10 11:15 AM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Re: Lenco or Liberty?
#622486
02/26/10 12:42 PM
02/26/10 12:42 PM
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Joined: Dec 2004
Posts: 1,717
Rancho Cucamonga, Calif.
PUNK
top fuel
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top fuel
Joined: Dec 2004
Posts: 1,717
Rancho Cucamonga, Calif.
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What about the G-force units. It seems that most of the time I talk to a SuperStock stick racer, more often than not, they say they have a G-force. I think the fastest stick HEMI cars use a G-force. Ive been told from the SuperStock racers that all the manual trannies will eventually break, so they go with the one thats the easiest to service and maintain and they claim G-force is the way to fly. I have no personal idea however so its not my opinion, just what I have gathered from the track. My wife asked me about changing her car over to a stick, so I started researching alittle and about soiled my shorts when I saw the cost of the tranny alone!! I think we are going to stick with the 904 and keep it boring.
Last edited by sloan; 02/26/10 12:45 PM.
10.53 @ 125mph. 1.37 60 foot. Caltracs and Monoleafs, AFCO shocks.
Heads by INDIO MOTOR MACHINE; IMM.
CP Pistons, PC Carbs.
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Re: Lenco or Liberty?
[Re: Bob_Coomer]
#622487
02/26/10 12:44 PM
02/26/10 12:44 PM
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Joined: Dec 2007
Posts: 486
IL
knyech1
mopar
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mopar
Joined: Dec 2007
Posts: 486
IL
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Quote:
Quote:
The torque that a 1200hp blown hemi produces would shred a DR4 in about a second and a half.
You might be right, but when I was looking for one be it not near that power level...
They told me they were rated to over 1800hp in drag race conditions 
Quoting Jerico:
This transmission's durability is proven by the leading Pro Stock teams, which repeatedly put 1300-plus horsepower through the JericoŽ.
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Re: Lenco or Liberty?
[Re: Dragula]
#622489
02/26/10 04:42 PM
02/26/10 04:42 PM
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Joined: Jan 2003
Posts: 4,084
Indiana
W5Duster436
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Indiana
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I called Lenco and they recommended a beefed up ST1200 with racing internals. They said to run it with a Ram clutch setup and a lakewood or other approved BH. We're gonne get with Mike@MR2 and go from there. I know the engine made right at 1000 lbs of tq at 3600 rpm or something like that. Tim's dyno would only do 1000/1000 so he had to back off the timing and other stuff so we really have no idea what it puts out. The engine will be going back up to Tim soon so hopefully this time he can get it on a dyno that'll give us the true output to get the correct trans setup. Quote:
Never driven a blown hemi, but I always wanted a manual trans behind my EFI Hemi, and with the power plant you describe, its going to need to be a clutchless trans. My vote would be for the lenco. Its a little more drag and heavier, but still very streatable. A littler noisy too....I have been wanting a Lenco drive (w/converter) for a long time or an st1200 (w/ clutch). For your application a Lenco drive 3-speed would be the ticket with all that torque on tap. Hemis rev so quick, I ave no idea how you would get the clutch in and the thing shifted in time, that's why if I did one, it would be a clutchless no atter what.
http://www.racingjunk.com/category/1087/Racing_Transmissions/post/1786719/DONOVAN-LENCO-COAN.html
From what I understand, the Liberty trans jumps out of gear when you lift, but I don't know if you physically held it in gear if it could be streeted.
http://www.racingjunk.com/category/1262/Manual_Transmissions/post/1800696/LIBERTY-4-SPEED.html
'70 Duster - SDSS 436 W5 4spd (Gone)
'71 Dodge D100
'70 Dodge W100
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Re: Lenco or Liberty?
[Re: W5Duster436]
#622491
02/26/10 05:03 PM
02/26/10 05:03 PM
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Joined: Oct 2004
Posts: 8,165
Left Coast
BobR
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master
Joined: Oct 2004
Posts: 8,165
Left Coast
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Quote:
Quote:
Just think of what it will do to his Dana/Locker combo?
So what differential should he be running to handle the hp/tq?
A fully race prepped Dana is a good unit but that means aftermarket race gears and a good spool. Dr Diff will be able to answer that question better than I can. If the car is a show piece that won't get driven hard then what he has will be OK.
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Re: Lenco or Liberty?
[Re: W5Duster436]
#622493
02/26/10 07:41 PM
02/26/10 07:41 PM
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Joined: Oct 2004
Posts: 8,165
Left Coast
BobR
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master
Joined: Oct 2004
Posts: 8,165
Left Coast
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Quote:
Quote:
Quote:
Quote:
Just think of what it will do to his Dana/Locker combo?
So what differential should he be running to handle the hp/tq?
A fully race prepped Dana is a good unit but that means aftermarket race gears and a good spool. Dr Diff will be able to answer that question better than I can. If the car is a show piece that won't get driven hard then what he has will be OK.
I thought that it had pro-gears and whoever he got it from (moser/mark williams/strange) had recommended he run the locker knowing the amount of power he had. ??
For that kind of power if slicks are used and the car hooks I wouldn't put a lot of faith in anything other than a good spool.
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Re: Lenco or Liberty?
[Re: W5Duster436]
#622494
02/27/10 10:13 PM
02/27/10 10:13 PM
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Joined: Dec 2004
Posts: 10,555
Rittman Ohio
fourgearsavoy
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I Live Here
Joined: Dec 2004
Posts: 10,555
Rittman Ohio
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I would go G-Force or Liberty  But one must remember that combo will require an adjustable clutch to make it live past the first launch and gear change  Call Tim Hyatt for a custom unit,I don't have his number in my new phone but you can find his number and anything you ever wanted to know over here: www.umtrnorth.com Just go to the forum and read  Gus 
64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60
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Re: Lenco or Liberty?
[Re: fourgearsavoy]
#622495
02/27/10 10:44 PM
02/27/10 10:44 PM
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Joined: Nov 2006
Posts: 637
Kokomo,IN
StripeHOG
mopar
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mopar
Joined: Nov 2006
Posts: 637
Kokomo,IN
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I've seen a fast blown car w/a locker before it was a blown dakota that ran 5.'s in the 1/8
Andrew Brough D372
1969 Dodge Dart GTS
1.43 60'best
6.82 1/8 98mph
"the light came on and I ran out of talent"
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