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Old Jul 25th, 14, 08:04 AM   #1 (permalink)
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GForce T5 vs TKO 600

70 Camaro...

So after putting about 500 miles on my car and a track day at road Atlanta I am very unhappy with my TKO 600. The transmission almost always grinds and misses 3rd gear at track day events. Turns out this is a common complaint online. Do a search. Also, The 1st gear ratio is simply to tall for a 3.73 rear end ( 2.87 ratio).

So... I am doing research on another transmission. As a side note, I have an auto gear M22 with super case with road race gear rations in another car. Now that is an outstanding transmission, however, it only has 4 gears and that is very limiting on top speed with a 3.73 rear. RPM will max out at road Atlanta or other road courses when on a straight away. 5th gear is needed for the straights. The auto gear M22 road race gear ratio is 2.19 first. This is excellent with Pontiac high torque engines.

Here is the M22 Road Race Gear ration, which is outstanding with a 3.42 rear end and 26 or 27 inch tires.

2.19
1.5
1.17
1

Here is the TKO 600 ratios, not nearly as good as the M22 ratios when doing track day events on a road course. There is actually no comparison in performance.

2.87
1.89
1.28
1.00
.64 (Overdrive)


After doing some research I found the GForce 5 Speed. The ratios look great. Does anyone have experience with this transmission and the install in a 2nd Gen Camaro?

2.42
1.53
1.23
1.00
.75 (Over Drive)
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Old Jul 25th, 14, 08:11 AM   #2 (permalink)
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Re: GForce T5 vs TKO 600

FTIW: I don't think you have enough miles on the TKO to really get a grindless shift. I have used both Tko 500 and 600. I don't have anything but a stock shifter body. I think you need more miles on this gear set and make sure your clutch is releasing properly.
Just my 2 cents.

If you need pointers on the subject, I believe David Pozzi may have some suggestions. He can be found on this site.
Also if my memory serves correct, there is a road race TKO 600.
The TKO 500 has a very low first gear, 3.27:1 . Sounds like a dump truck at times in first with a 3.73 gear.
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Old Jul 25th, 14, 08:27 AM   #3 (permalink)
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Re: GForce T5 vs TKO 600

OK I can believe that. however the gear ratio is just not right for my car and what I'm doing so still tryin to find people who have experience with the G Force T5 5 speed.
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Old Jul 25th, 14, 08:57 AM   #4 (permalink)
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Re: GForce T5 vs TKO 600

There's probably no one on here that has experience with the G Force. However, if you google it there is a ton of info from the Mustang guys.

I know it's not what you asked, but another less expensive option is to talk to Liberty Gear and see what they can do on the TKO. I know they offer a pro-shift or face-plate service, upgrade the linkage, and can most likely swap in the RR 0.82 fifth. No idea on how to fix first gear though.
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Old Jul 25th, 14, 08:59 AM   #5 (permalink)
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Re: GForce T5 vs TKO 600

OK thank you Steiner.
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Old Jul 25th, 14, 05:20 PM   #6 (permalink)
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Re: GForce T5 vs TKO 600

The TKO does take some getting used to - especially for an "old" 4-speed guy like me.

Oversimplified for TV, but American Powertrain decribes the TKO shift pattern on the RideTech 48 hour build. scroll to about the 5 minute mark if you don't want to watch the whole thing

https://www.youtube.com/watch?featur...&v=8oR4Y_M8C8M
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Old Jul 25th, 14, 08:17 PM   #7 (permalink)
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Re: GForce T5 vs TKO 600

yes I'm familiar with the differences and shifting but what they tell you in the video simply is not true when you're on a road course it's almost like the synchros can't keep up with the transmission and it grinds going into 3rd. that's why companies like Liberty gear offer a synchronizer upgrade package to correct the issue.
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Old Jul 26th, 14, 06:11 AM   #8 (permalink)
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Re: GForce T5 vs TKO 600

Have you considered the close ration t-56 magnum? 2.66 first, double overdrive, no shifting issues and rated at 700 inch lbs.

Close: 2.66, 1.78, 1.30, 1.0, .80, .63

If you are running that much power and take it on a road course I wouldn't think anything but the close ratio magnum. Plus you could drive it on the street with out any issues.
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Old Jul 26th, 14, 06:16 AM   #9 (permalink)
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Re: GForce T5 vs TKO 600

That does sound nice
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Old Jul 26th, 14, 07:54 AM   #10 (permalink)
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Re: GForce T5 vs TKO 600

TC member sc68z28 uses a G-Force 5 sp trans for drag racing, don't know if it's the same one you want info on though. You might PM him and ask
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Old Jul 26th, 14, 02:46 PM   #11 (permalink)
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Re: GForce T5 vs TKO 600

Quote:
Originally Posted by 130fe View Post
Have you considered the close ration t-56 magnum? 2.66 first, double overdrive, no shifting issues and rated at 700 inch lbs.

Close: 2.66, 1.78, 1.30, 1.0, .80, .63
That's exactly what going in my '67. My TKO in the '69 has the synchro upgrade, but after driving a few T-56's I'm sold
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