My 2 cents,
As I go into our 24th year into the standard transmission business it becomes hard to realize that most T10 , Toploader, and Muncie 4 speeds are 30 to 40 years old.
What appears odd to me is that people building Cobras spend a great deal of money on the initial kit, an engine and then throw a transmission in the car that is rebuilt but runs on gears that are still 30 to 40 years old. Most of these gears are hammered to death and that is why the NEW tranmissions in reality are such a bargain.
Someone mentioned that the Borg Warner designs are antiquated compared to the Tremec stuff. Oddly it is the other way around! The TKO alone used old world synchro technology ( same rings as the toploader since Tremec DID make the toploader for Ford.) By purchasing the BW standard transmission platform they were able to also purchase the inovative patents that Warner owned, and make use of these patents in future transmissions.
The new TK0 500 and 600 transmissions look quite impressive and are a big improvement and Tremec will phase out the TK0 line.
The G-Force gear sets installed in T5's are also an interesting hybrid, since you get the smoother shifting of the T5, but with increased strength and at least a selection of 5th gears.
Happy New Year
Paul
5speeds.com