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Old 02-22-2017, 05:58 PM
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ramseyt ramseyt is offline
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Thumbs up My New Tremec TKO 600 5 Speed

I recently completed MDL's Tremec TKO 600 5 speed conversion on my 66 Tiger! http://moderndriveline.com/Tiger_TKO.htm I am very pleased with the results and the conversion went without a hitch. I expect it will be much more comfortable on long interstate trips now with the .64 O.D.----3k rpm's at 65 mph now drop to 2k in 5th. I still have the 2.88 rear end and so it was also a nice surprise to feel the slight reduction in first gear (2.87 vs the 2.32 in the old close ratio Toploader). The 600 bolted right up to my 6 bolt bell housing. I swapped my old 10 spline clutch disc for a 26 spline to fit the 600. My kit included a new drive shaft and cross member.

Others with 5 speeds have said "it'l be the best thing you'll ever do to your Tiger if you take long trips". I believe it now and it feels good to be there!
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Last edited by ramseyt; 02-23-2017 at 03:07 PM.
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Old 09-11-2017, 10:53 AM
boss-tiger boss-tiger is offline
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Did you have to do any trimming inside or outside the Tiger tunnel to get this to fit? Did you use your stock shift lever and if so was the final install height/position very close to original/stock?
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Old 09-11-2017, 03:13 PM
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ramseyt ramseyt is offline
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Originally Posted by boss-tiger View Post
Did you have to do any trimming inside or outside the Tiger tunnel to get this to fit? Did you use your stock shift lever and if so was the final install height/position very close to original/stock?
The ONLY tunnel mod was I had to open the shifter hole up at the back 3/8" to prevent pinching the rubber boot that came on the 600. Suspect there could be that much variation from car to car. Did use stock shifter. I didn't measure the height but can't tell that it is any different from stock.
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Old 09-12-2017, 05:14 PM
boss-tiger boss-tiger is offline
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Thanks and appreciate your reply. Another question would be clearance for stock gas and brake lines running inside lower trans tunnel area on right side ? any fit/clearance issues to consider
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Old 09-13-2017, 07:07 AM
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Originally Posted by boss-tiger View Post
Thanks and appreciate your reply. Another question would be clearance for stock gas and brake lines running inside lower trans tunnel area on right side ? any fit/clearance issues to consider
There is as much room as with the top loader. In fact you can easily run a return fuel line for fuel injection if you are so inclined. I run a thermo shield tubing over the top of my fuel line all along the trany and up the bell housing to the back of the manifold with plenty of clearance.

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Old 09-13-2017, 09:06 AM
casarris casarris is offline
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I'm thinking of converting my Tiger to this, what gear ratios did you end up with?
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Old 09-13-2017, 10:22 AM
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I'm thinking of converting my Tiger to this, what gear ratios did you end up with?
MDL recommended the 600RR with the .82 OD. I opted for the 600 with the .64 OD to have the option of later going to a lower rear end ratio from the stock 2.88 to gain more go off the line.
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Old 09-13-2017, 02:18 PM
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I have the same setup 302/5 speed/288 gears and have loved it. Highway touring is not a chore and also better off the line.
Are you going to the United in Staunton, VA next week?
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Old 09-13-2017, 06:57 PM
casarris casarris is offline
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So did you end up with a gear ratio of 2.87, 1.89, 1.28, 1.00, .64 o.d., and if so is there a big gap from 4th to 5th gear? What size wheels and tires do you have?
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Old 09-14-2017, 09:27 AM
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So did you end up with a gear ratio of 2.87, 1.89, 1.28, 1.00, .64 o.d., and if so is there a big gap from 4th to 5th gear? What size wheels and tires do you have?
The jump from a .64 OD is fairly significant which is why the .82 is recommended by MDL. If you are just looking for economy and have a mild/stock small block the .64 works just fine. However if you have a 302 with a high lift cam and stock rear gears you will find that at highway speeds the motor will run below 1500 rpm's and most likely buck and be unhappy. I have the 600RR tranny with 3:07 gears and my 302 has a very high lift cam that does not like to run smoothly below 1600 rpm and the .82 OD is perfect at highway speeds. It will also beat my 2015 Porsche 911CS in a straight line !!! but forget the corners !!!

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