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2Likes
03-06-2009, 02:49 PM
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CC Member
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Join Date: Apr 2006
Location: Los Angeles,
ca
Cobra Make, Engine: Hurricane Motorsports, 427w
Posts: 437
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Not Ranked
TKO 600 Tranny Fluid
With about 500 miles on my tranny, I'm planning on changing the fluid this weekend. Thought I'd call Tremac to see if there's any update on their prefered fluid and if they like any of the synthetic blends, like Dexron IV or VI. The instructions with my tranny said to fill it with GM Synchromesh or Dexron III ATF. Got kind of an interesting response that I thought I'd share.
First, they tested and don't like the synthetic blends. Said they are too thin.
Two, they are now recommending Pennzoil Synchromesh over the GM and Dexron III fuilds. They like the thicker viscosity of the Pennzoil.
Three, they said that although the owner's manual for Corvettes say the tranny runs Dexron VI and Ford manuals say Dexron IV, they really have Dexron III in them since Tremac pre-fills them.
Matt
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Hurricane Motorsports #1053; 427w
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03-06-2009, 03:18 PM
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CC Member / Sponsor
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Join Date: Oct 2003
Cobra Make, Engine:
Posts: 808
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Not Ranked
Trans Oil
Matt,
I really didn't care for the GM Sychromesh, so I went with Amsoil Sychromesh. I like this much better. Don from DD Performance told me not to use any type of ATF. The TKO's seem to shift better since I have used Amsoil Synch. Then again it just my opinion.
Bill
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Squeaky wheel always gets the grease!!
www.gcperf.com
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03-06-2009, 05:11 PM
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CC Member
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Join Date: Feb 2001
Location: St. Louis, Missouri,
MO
Cobra Make, Engine: SPO 2715
Posts: 1,648
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Not Ranked
What about this stuff?
http://performanceunlimited.com/cobr...ltrashift.html
I used it in SPF 1380, and it seemed to help the shifting.
E
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03-07-2009, 03:06 PM
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CC Member
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Join Date: Mar 2005
Location: Orange County,
CA
Cobra Make, Engine: SPF Brock Coupe #88, Keith Craft 427w
Posts: 707
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Not Ranked
Ditto on the UltraShift - I use it in my Daytona and it is the best!!!
Doug
__________________
Now back to my midlife crisis...
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03-16-2009, 11:12 AM
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CC Member
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Join Date: Dec 2003
Location: Lehigh Valley, PA,
PA
Cobra Make, Engine: Look-a-like cobra POS
Posts: 955
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Not Ranked
Mobil 1 atf.
__________________
B. Ewing
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05-31-2018, 09:57 AM
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CC Member
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Join Date: Feb 2010
Location: Honolulu HI, East Haddam, CT, Middletown,
HI
Cobra Make, Engine: BDR #656 402 SR TW
Posts: 179
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Not Ranked
Quote:
Originally Posted by MFE III
With about 500 miles on my tranny, I'm planning on changing the fluid this weekend. Thought I'd call Tremac to see if there's any update on their prefered fluid and if they like any of the synthetic blends, like Dexron IV or VI. The instructions with my tranny said to fill it with GM Synchromesh or Dexron III ATF. Got kind of an interesting response that I thought I'd share.
First, they tested and don't like the synthetic blends. Said they are too thin.
Two, they are now recommending Pennzoil Synchromesh over the GM and Dexron III fuilds.
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Was that Pennzoil Synchromesh MTF or ATF?
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05-31-2018, 10:03 AM
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CC Member
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Join Date: Dec 2012
Cobra Make, Engine:
Posts: 973
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Not Ranked
Are you racing? If not, I think the TKO fluid is meant to not require changing.
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05-31-2018, 10:47 AM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,889
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Not Ranked
Quote:
Originally Posted by 66gtk
Are you racing? If not, I think the TKO fluid is meant to not require changing.
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If you're not racing, or ragging it out somehow, you might change it once in your lifetime... if that. But what's kinda interesting is that Tremec used to specify the GM #12345349 for its fluid. Now they specify GM #88861800. Tremec Lube FAQs I dunno, maybe GM just changed the numbers and it's the same stuff, but you can still buy either one from Summit.
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05-31-2018, 04:55 PM
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CC Member
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Join Date: Dec 2003
Location: Gurnee,
IL
Cobra Make, Engine: Kirkham #259
Posts: 1,393
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Not Ranked
Mobil 1 Synthetic ATF...(it’s a Dex III)..we’ve had many discussions also with Liberty.....
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Morris
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06-02-2018, 01:53 PM
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CC Member
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Join Date: May 2018
Location: Loxley,
Ala
Cobra Make, Engine: Shell Valley, 408 Stroker
Posts: 28
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Not Ranked
x2 on Amsoil Sychromesh!!
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06-02-2018, 06:24 PM
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Senior Club Cobra Member
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Join Date: May 2001
Location: Florence,
AL
Cobra Make, Engine: RCR GT 40 & 1966 Fairlane 390 5 speed
Posts: 4,511
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Not Ranked
old thread but
several of us have been using Pennzoil because is 1/3 the cost and ease to find.
I found this online:
Pennzoil® Synchromesh Fluid is designed to offer optimal protection for moderately loaded gears in manual transmissions. Containing a high detergent additive system, it helps cope with water, dust, dirt, and any other small deposits you might encounter on or off-road1. Pennzoil® Synchromesh Fluid also offers synchronizer compatibility for performance in manual transmissions, specifically to fulfill the needs of Chrysler, GM, Honda and other transmission requirements.
Pennzoil® Synchromesh Fluid meets General Motors specification 9985648 for use where GM part numbers 12345349 or 12345577 are called out for use. Chrysler manual transmission fluid specification MS-9224 is also met. This high quality manual transmission fluid is formulated for good low temperature flow to maintain shift characteristics even after a cold night2. Corrosion protection is added to help protect your transmission.
__________________
''Life's tough.....it's even tougher if you're stupid.'' ~ John Wayne
"Happiness Is A Belt-Fed Weapon"
life's goal should be; "to be smarter than inanimate objects"
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06-08-2018, 08:35 AM
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CC Member
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Join Date: Dec 2015
Cobra Make, Engine: Superformance #705, Ford Racing 460 - 514ci
Posts: 108
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Not Ranked
I called Tremec a few weeks ago and they told me to buy the Pennzoil.
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06-08-2018, 04:54 PM
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CC Member
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Join Date: Oct 2002
Location: Eagle,
Ne.
Cobra Make, Engine: 1966 Lone Star 427SC.
Posts: 4,298
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Not Ranked
I just bought a new TKO, is there any type of break-in-period, with shifting, fluid etc..?
I don't have my trans at home to read the manual.
__________________
Regards,
Kevin
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06-08-2018, 06:04 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,889
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Not Ranked
Quote:
Originally Posted by FUNFER2
I just bought a new TKO, is there any type of break-in-period, with shifting, fluid etc..?
I don't have my trans at home to read the manual.
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A 500-mile break-in period will prevent premature wear and possible damage to the transmission. During the break-in period, you must avoid high RPM shifts and drag starts. The clutch must be fully disengaged to shift the transmission. Do not use excessive force when shifting the transmission. If you experience clash shifts (grinding), check the travel of the clutch to ensure proper air-gap is achieved (see above). Another possible cause of clash shifting is improper transmission installation, (excessive driveline angle / resulting in poor driveline alignment). Do not attempt to shift the transmission when the engine is revving over 6,500 RPM’s. Do not hold the transmission in gear by applying force on the shifter. This will damage the pads on the shift forks and may result in significant damage to the transmission.
From the TKO Installation Tips that come with your transmission: http://libertysgears.com/wp-content/...ation-Tips.pdf
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06-08-2018, 07:14 PM
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CC Member
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Join Date: Oct 2002
Location: Eagle,
Ne.
Cobra Make, Engine: 1966 Lone Star 427SC.
Posts: 4,298
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Not Ranked
I pretty much drive the same, as you don't have to treat and beat a tranny to death, even if racing. Same thing with engines. (and my wife)
I've never used a mic to run in the bellhousing for dead on line up of the fly, disk, bell and trans, with no issues in the past, but I'm going to with this new drivetrain. A friend has a magnetic dial indicator, so it'll be interesting. I need to order a throwout and pilot bearing.
Do you know where I can buy a bell to fork boot ?
I have a new Quicktime.
__________________
Regards,
Kevin
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06-08-2018, 07:20 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,889
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Not Ranked
Quote:
Originally Posted by FUNFER2
Do you know where I can buy a bell to fork boot ?
I have a new Quicktime.
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If blykins is still talking to you, you might try him. If not, try Mike Forte Fortes Part's Connection | Quality high performance parts at the most competitive price Personally, I think TKOs are more sensitive to having the bellhousing dialed in as close to perfect as you can get. QTs are far better than Lakewoods on that, but try and get it as close to perfect as you can.
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06-09-2018, 09:55 AM
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CC Member
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Join Date: Jul 2006
Location: Sulphur Springs,
Tx
Cobra Make, Engine: Hurricane Motorsports #1121 427W
Posts: 105
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Not Ranked
I broke my TKO 600 in with ATF and at 500 miles I changed the fluid no metals shavings. I refilled with ATF (Dexron) and added 2-3 ounces of Lucas Oil and 5000 miles later the tranny shifts great . It quick shifts fine too. And, I don't baby the car either.
I did have major clutch issues and shift problems until I bought a Quiktime Bellhousing and got rid of the Lakewood boat anchor . I have Forte's hydraulic cylinder and my clutch/shift issues went away .
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06-09-2018, 01:53 PM
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CC Member
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Join Date: Oct 2002
Location: Eagle,
Ne.
Cobra Make, Engine: 1966 Lone Star 427SC.
Posts: 4,298
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Not Ranked
It took 5,000 miles ?
Why are some people using ATF ?
What were the problems with the Lakewood ?
__________________
Regards,
Kevin
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06-09-2018, 01:59 PM
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CC Member
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Join Date: Oct 2002
Location: Eagle,
Ne.
Cobra Make, Engine: 1966 Lone Star 427SC.
Posts: 4,298
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Not Ranked
Is Ultra-shift made by Eaton ?
We know that when you break in a new engine, you don't want to use synthetic oil, use regular oil until the rings set.
Ultra-Shift is synthetic, so you don't need to do the same with a transmission ? (Mine is a TKO-600)
__________________
Regards,
Kevin
Last edited by FUNFER2; 06-09-2018 at 02:23 PM..
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