TKO 600 Modifications

[GregWeld]

Cut to cure!

[strtlegal]

Thanks for the name. I'm having the same issues. I know the TKO is not supposed to be spun past 6,500 but man my motor loves that area. I've never been real happy with any of my shifting so I'm hoping these guys could fix me up. I wish I would have known a year back I would have gotten a T56. $500.00 is not bad at all though...Thanks again. if i get it pulled out and shipped to them i will give you a full report

[Vegas69]

I'd appreciate that. I haven't decided what I'm doing. I'll just keep driving until I do.

[strtlegal]

If we agree on Monday to some terms Ill try and start tearing into it again. It's been hot out so Im not in desperate need to have my car every weekend..Stay tuned..

Kind of sucks because I just put in a Mcleod twin disk thinking my OE clutch wasnt up to snuff. All in the name of hot rodding I guess..

Stay tuned

[mfain]

Todd,

When I ordered the TKO600 Extreme from Grey at American Powertrain, I called the Tremec Tech who does the modifications. Apparently there is a lot to do to make the 600 shift well above 6500 RPM -- polished syncros, hardened shift forks with brass pads, hand fitting of components, etc. Wish I could tell you how it works, but its still in the box. I do, however, have a new billet shifter from American Powertrain that you are welcome to try. I should be back in Vegas next week.

Pappy

[strtlegal]

Doesn't that shifter help with the 2-3 shift? People use that and a Twist Machine shifter and seam to like it but still not sure if really helps with banging gears..There is times when I shift near redline which is about 7100 and I forget that tran's is not meant for it and I will feal the teeth grab..

Jim at Hurst driveline said that Tremec might come out with Magnum style TKO if there is enough demand.

Does a std T56 have these issues?

[mfain]

The shifter might smooth things out a little by eliminatiing some slop (notice the adjustable throw stops), but I doubt it would do much to overcome the basic issues that are internal -- sycronizers and shift fork flex. I suspect that some (most) of the modifications to the TKO 600 Extreme are just "blueprinting" and polishing, much like you do to the internals of a good rear end. I bought the transmission for the hardened shafts and upgraded input shaft for the extra torque capacity. I opted for the 600 vice a T-56 to get the .82 fifth gear for road racing. I didn't want or need the deep ratio drops of the T56's 5th and 6th gears.

Pappy

[Vegas69]

Thanks for the offer Pappy. The 1-2 shift is my biggest gripe. It's impossible to shift it quick. The 2-3 grind above 6500 ain't to much fun either but I don't really give a **** until it breaks. As long as it goes in... To be honest I only shift above 6500 when I'm racing and have no idea what rpm I'm running. Normal shifts are in the 6200-6500 range. $500 seems reasonable if the results are worth the trouble and funds.

[The WidowMaker]

$250 sounds damn reasonable for just the parts since mine is still out, but does it sound like a complicated job that they should be doing?

[Vegas69]

I haven't even looked into the complexity of the change. I don't know if any press work or special tools are needed.