New Tremec 5 Speed Tranny - Pontiac GTO Forum
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post #1 of 9 (permalink) Old 06-11-2012, 02:42 PM Thread Starter
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New Tremec 5 Speed Tranny

I posted something on this a week or so back but didn't get alot of replies. I have decided to put a 5 speed Tremec TKO 600 in my 67. It has the center console shift in it right now. I wanted to know if anyone has done this already and what if any were the issue.

All input is appreciated.

Jim
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post #2 of 9 (permalink) Old 06-12-2012, 09:29 AM
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Garage
Over on the PY (Performance Years) forum there's a guy who has been writing about putting a Keisler 5-speed into his 68. It has been quite an ordeal for him so far. It's worth reading.

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post #3 of 9 (permalink) Old 06-12-2012, 10:56 AM
 
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I put a TKO 600 in my 64. It was pretty easy. The floor pan had to be raised and Hurst sells the piece to weld in. I just plazma cut out a hole, installed the tranny and fitted the new piece into place. I don't run a console so I bought a automatic car carpet and although I have a shifter porch it is mostly round to match the contour of the floor pan. I think on the 67 the crossmember has a flat surface to slide back on, not sure if you will have to drill or not. Have a driveshaft built and your set.

1964 400 4 speed Roller cammed RoadRacer
1969 400 T400 auto 2nd owner
2004 LS1 6 speed modded for roadracing
1966 GTO Altered wheelbase former 1970s show car
1973 Challenger 360/727
1931 Ford Model A
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post #4 of 9 (permalink) Old 06-13-2012, 03:08 PM
 
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Jim I went with the new Keissler 5spd and sure glad I did. No shifter problems associated with the trmacs and no cutting any holes in the floor!! Crossmember moved to the rear a couple of inches, that's it!!
https://www.gtoforum.com/f12/xmas-my-house-34329/
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post #5 of 9 (permalink) Old 06-13-2012, 04:17 PM
 
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Purple Haze, how does it shift? Would you recommend getting it professionally installed? I've been thinking of going with their new SS700, or waiting for the next version of the RS600.
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post #6 of 9 (permalink) Old 06-13-2012, 04:26 PM
 
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It's the best mod we've made. Shifting is fantastic........ no floor mods!!! We got 16.5mpg on the freeway going 65-70mph and the RPM's around 2000 with our 3:55 gear set. Launches like 4:88's!!!! Zero issues with the console but I do plan on re-installing the original shifter and 4spd knob!!!

Check the install thread... https://www.gtoforum.com/f12/keisler-...install-34354/

Go for it!! Mine was 4spd to 5spd change.

Last edited by Purple Haze; 06-13-2012 at 04:37 PM. Reason: add thread
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post #7 of 9 (permalink) Old 06-13-2012, 04:47 PM
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Do all the homework you can. It's a simple job for some, a nightmare for others. Get all the facts. My take: I'm a 4 speed guy myself, but I have to say, in the real world, an overdrive really can't be beat if you drive the car a lot. It changes the whole car..(in a good way!)
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post #8 of 9 (permalink) Old 06-14-2012, 05:03 PM
 
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Quote:
Originally Posted by Jim View Post
I posted something on this a week or so back but didn't get alot of replies. I have decided to put a 5 speed Tremec TKO 600 in my 67. It has the center console shift in it right now. I wanted to know if anyone has done this already and what if any were the issue.

All input is appreciated.

Jim

I had a Keistler 5-speed (including overdrive for fifth gear) professionally installed. Can't tell from a positioning viewpoint that it's any different from an M-20. It works real well at speeds over 60 MPH, running at about 1,850 RPMs, going along with what geeteeoh guy says above. Good luck.

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post #9 of 9 (permalink) Old 06-16-2012, 09:11 PM
 
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Have the Tremac 500 in my 65. Installed fine. Not much on the fabrication to do. Just moving the crossmember, and a little trimming on the pouch floor.
But...... Not very happy with the shifting at all. Not going to race it, until I change it out for something that shifts reliably. Tremac Does not shift smoothly. Period!!!!!
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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO Undercarriage, Frame, Transmission and Differential Discussions.

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