Re: 1970 Cuda 340 clutch
[Re: moparmatt0]
#2446877
02/05/18 03:10 PM
02/05/18 03:10 PM
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Joined: Jan 2003
Posts: 4,720 Moved to N.E. Tennessee
GomangoCuda
master
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master
Joined: Jan 2003
Posts: 4,720
Moved to N.E. Tennessee
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For your application I think you would like a Centerforce. Many here will agree but a few purists will insist on a Borg & Beck style.
In theory, there is no difference between theory and practice. In practice, there is.
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Re: 1970 Cuda 340 clutch
[Re: moparmatt0]
#2446954
02/05/18 05:28 PM
02/05/18 05:28 PM
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Joined: Jan 2003
Posts: 16,376
dogdays
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,376
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Mild 340 street use only will use a stock clutch set just fine. Why complicate things???
Rockauto is your friend in this case: http://www.rockauto.com/en/catalog/plymouth,1970,barracuda,5.6l+340cid+v8,1496494,transmission-manual,clutch+kit,1993
Generally speaking, the diaphragm clutches have lower pedal effort than the Borg & Beck.
Here's why you don't need anything more than a stock type clutch: factory engineers were very good at matching clutches, transmissions, etc., to the engine in front of them. If you have hopped up your 340 mildly or even majorly, without a power adder the engine's torque will not increase over stock or at most, add 10%, which is well within the safety margin designed into your stock clutch. What increases the power is moving the torque peak higher in the rpm range. But it doesn't matter what horsepower your engine makes! What the clutch sees is TORQUE. So unless you use nitrous or supercharger/turbocharger the torque stays close to the same, meaning the stock clutch is adequate. The farther you go from originality, the greater the chance of reducing driveability.
BUT if you really have to spend $500, then either the Centerforce II or Dual Friction is a very nice setup which will last forever in your application.
R.
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Re: 1970 Cuda 340 clutch
[Re: moparmatt0]
#2447201
02/06/18 12:41 AM
02/06/18 12:41 AM
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Joined: Jul 2011
Posts: 957 Chicago
PurpleBeeper
super stock
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super stock
Joined: Jul 2011
Posts: 957
Chicago
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I will point out that years ago I bought a "stock" clutch from AutoZone & I couldn't hit the gas pedal more than about 1/3 of the way down, even while already moving, without slipping the clutch.... HORRIBLE. So don't go "ultra cheap" in my opinion and at least get a decent one.
Also, I had some bad luck recently with a Hays street/strip clutch, but I was pretty hard on it to be honest. It just didn't seem like the same quality Hays used to sell.
70 Roadrunner convt. street car
440+6, NOS, 4-spd, SS springs
'96 Mustang GT convt. street car
'04 4.6 SOHC, NOS, auto, lowered
"Officer, that button is for short on-ramps"
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Re: 1970 Cuda 340 clutch
[Re: moparmatt0]
#2447661
02/06/18 09:46 PM
02/06/18 09:46 PM
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Joined: May 2007
Posts: 1,443 Maryland
Dads426
pro stock
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pro stock
Joined: May 2007
Posts: 1,443
Maryland
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I used a Luk clutch and pressure plate from Rock Auto for my stock 72 340 Duster a few years ago and I'm very happy with it. You have to remove the overcenter spring and the pedal effort is low and engagement is very smooth. Luk clutches have a good reputation with the Diesel truck crowd.
2012 422 Allstars NSS Champion 2013 422 Allstars NSS Champion 2014 422 Allstars NSS Champion
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Re: 1970 Cuda 340 clutch
[Re: rarefish]
#2448079
02/07/18 04:59 PM
02/07/18 04:59 PM
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Joined: Jan 2003
Posts: 5,268 NY
70440+6bbl
master
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master
Joined: Jan 2003
Posts: 5,268
NY
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I had the exact same problem with that clutch in my ‘69 340 Swinger several years back.
'70 Super Bee 440 6 pack 4-spd 4.10 Dana N96 EB5 ‘70 Super Bee 440 6 pack 4-spd 3.54 Dana FC7 ‘70 ‘Cuda 440+6bbl 4-spd 3.54 Dana N96 EB5 V1W
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Re: 1970 Cuda 340 clutch
[Re: moparmatt0]
#2451247
02/13/18 04:45 PM
02/13/18 04:45 PM
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Joined: Jan 2003
Posts: 5,439 So Cal
Sinitro
master
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master
Joined: Jan 2003
Posts: 5,439
So Cal
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I have been running a McLeod for many years in the RR.. Originally tried a CenterForce, didn't like it pulled it out and chucked it in the dumpster... Just my $0.02...
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Re: 1970 Cuda 340 clutch
[Re: moparmatt0]
#2456481
02/24/18 02:05 AM
02/24/18 02:05 AM
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Joined: Jan 2003
Posts: 1,607 Western Washington
Sixgun
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,607
Western Washington
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Mcleod 10.95 3 roller...ceramic faced disc= awesome. I tear 'em up and these things last. Rebuildable at McLeod also. 671 HP 670 TQ and no dual disc...
I'm 55 now, no time to waste. Not a week goes by that I don't hear about someone passing on.Let's get out there,smoke some tires,have a beer with a good friend,do what you have always wanted to do.I am pretty sure no one will ever say on their deathbed "gee I'm glad my life was calm and boring"
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