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07-07-2022, 11:54 AM
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CC Member
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Join Date: Apr 2014
Location: Virginia Beach,
VA
Cobra Make, Engine: ERA 289FIA:289 8 stack
Posts: 31
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Not Ranked
Tremec TKX install into 289FIA
Bob,
Has ERA installed a TKX into a chassis yet? It looks like a drop in replacement for the TKO so I figure that it would bolt right in like a TKO. I'm strongly considering a TKX and Quick Time bell for ERA-2164. I'll be bolting this all to a 289. I just want to understand any fitment issues including cross member/support, driveshaft length, clutch, etc.
V/r,
Sean
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07-07-2022, 04:08 PM
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CC Member/Contributor
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Join Date: Feb 2000
Location: Greenville,
SC
Cobra Make, Engine: 70 Shelby convertible, ERA-289 FIA, 65 Sunbeam Tiger, mystery Ford powered 2dr convertible
Posts: 12,685
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Not Ranked
Quote:
Originally Posted by seatra
Bob,
Has ERA installed a TKX into a chassis yet? It looks like a drop in replacement for the TKO so I figure that it would bolt right in like a TKO. I'm strongly considering a TKX and Quick Time bell for ERA-2164. I'll be bolting this all to a 289. I just want to understand any fitment issues including cross member/support, driveshaft length, clutch, etc.
V/r,
Sean
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Have not do one in a Cobra yet, but helped upgrade a big motor 92 mustang convertible recently, should be a straight bolt in.
Bill S.
__________________
Instead of being part of the problem, be part of a successful solution.
First time Cobra buyers-READ THIS
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07-07-2022, 04:34 PM
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Senile Club Cobra Member
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Join Date: Feb 2001
Location: Buffalo, NY USA,
NY
Cobra Make, Engine: Superformance
Posts: 4,527
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Not Ranked
Bill is correct, the TKX is a dimensional clone of the TKO 500/600. A nut and bolt swap.
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07-07-2022, 05:23 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: 22,000
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Not Ranked
I have never seen a TKX live and in the flesh, but I do know that the TKO has a boss on the right side that you have to grind off flush or you can't get it to clear the ERA's chassis X-brace. I can post pics if somebody actually gives a shi*.  |
07-07-2022, 09:38 PM
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CC Member
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Join Date: Apr 2014
Location: Virginia Beach,
VA
Cobra Make, Engine: ERA 289FIA:289 8 stack
Posts: 31
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Not Ranked
Thanks for the bolt in confirmation guys!
Patrick, I would like to see the TKO boss mod. The TKX casing is smaller but it may have the same fitment issue with X brace
Last edited by seatra; 07-07-2022 at 09:40 PM..
Reason: Spelling
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07-08-2022, 05:37 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: 22,000
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Not Ranked
Quote:
Originally Posted by seatra
Patrick, I would like to see the TKO boss mod. The TKX casing is smaller but it may have the same fitment issue with X brace
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This is the TKO boss that requires grinding:
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07-08-2022, 09:42 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: 22,000
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Not Ranked
Here's a pic of a TKX from Summit. It looks like it has the same boss.
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07-08-2022, 10:36 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: 22,000
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Not Ranked
And here's a pic of mine installed. Remember the engine goes in first, then the transmission well behind the engine, then you push it forward to mate. Like everything else on the car, whether it's dropping a transmission, putting in a new relay, or taping up a loose wire, you've got about a quarter inch of clearance to work with.
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07-08-2022, 10:38 AM
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CC Member
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Join Date: Nov 2007
Location: Clayton,
IN
Cobra Make, Engine: ERA 838
Posts: 1,122
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Not Ranked
I have a TKX in my garage waiting for 838 to show up. It looks like a direct bolt in for a TKO except it looks like no boss to remove.
John
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07-08-2022, 10:42 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: 22,000
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Not Ranked
Quote:
Originally Posted by Grubby
I have a TKX in my garage waiting for 838 to show up. It looks like a direct bolt in for a TKO except it looks like no boss to remove.
John
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Did it look like there ever was a boss? Or did someone just politely remove it for you.  |
07-08-2022, 01:53 PM
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CC Member
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Join Date: Nov 2007
Location: Clayton,
IN
Cobra Make, Engine: ERA 838
Posts: 1,122
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Not Ranked
Patrick,
The rear of the TKX has a much different shape. Actually the entire trans is smaller and more stream lined.
John
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07-08-2022, 02:02 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: 22,000
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Not Ranked
Quote:
Originally Posted by Grubby
Patrick,
The rear of the TKX has a much different shape. Actually the entire trans is smaller and more stream lined.
John
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Hmmm, does your TKX look like the picture I posted above of the TKX from Summit? |
07-08-2022, 03:39 PM
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CC Member
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Join Date: Nov 2007
Location: Clayton,
IN
Cobra Make, Engine: ERA 838
Posts: 1,122
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Not Ranked
The picture looks like mine.
John
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07-08-2022, 03:42 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: 22,000
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Not Ranked
Quote:
Originally Posted by Grubby
The picture looks like mine.
John
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But you don't have that big-ass boss sticking out the side like a pack of Juicy Fruit? |
07-09-2022, 05:38 AM
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CC Member/Contributor
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Join Date: Feb 2000
Location: Greenville,
SC
Cobra Make, Engine: 70 Shelby convertible, ERA-289 FIA, 65 Sunbeam Tiger, mystery Ford powered 2dr convertible
Posts: 12,685
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Not Ranked
Quote:
Originally Posted by patrickt
Did it look like there ever was a boss? Or did someone just politely remove it for you. |
I can confirm that the old style boss is not on the new style transmission.
Bill S.
__________________
Instead of being part of the problem, be part of a successful solution.
First time Cobra buyers-READ THIS
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07-09-2022, 07:03 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: 22,000
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Not Ranked
Quote:
Originally Posted by mrmustang
I can confirm that the old style boss is not on the new style transmission.
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Well alright, that answers that. Thanks, Bill. |
07-09-2022, 08:24 AM
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CC Member
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Join Date: May 2000
Location: WEST TX USA,
Posts: 91
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Not Ranked
The major issue i had putting the TKX transmission in . Was the spacer alignment. The holes wasn't centered. With the spacer, it pushed the transmission back. On the earlier models Era the emergency brake mount is not removeable so trying to get it aligned and pushed in was a big issue for me.
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09-07-2022, 04:43 PM
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Registered User
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Join Date: Jun 2020
Location: Hanford,
CA
Cobra Make, Engine: ERA FIA 2163, 331 CI
Posts: 1
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Not Ranked
I have ERA 2163 (sort of; it's at the painters), so yours is sequential to mine. From what I researched, the TKX is a better fit, and also has a higher RPM limit (7,000+ vs. 6,200 for the TKO). I decided on a toploader, due to building a high RPM 331; from what I recall, the RPM difference in fifth would only save around 500 RPMs at 70 mph.
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