tremec T-56 vs T600

[undy]

Originally Posted by PANAVIA

If you plan to abuse the car then I can see a TKO600, but if you plan to drive the car. -- then a T56.

I do agreee. I agressively drive mine with M/T ET Drag Radials so the TKO's strength is greatly appreciated. I've already had to dump the 28 spline 9" rear axles for some drop-forged 31s and a True-Trac diff. The 28s' splined ends were almost twisted off (100% street use too) but... the TKO kept up and hasn't missed a beat, once.

I've got the T-56 (version of at least) in my C6 Z06 and I'm a good bit over 500 lb ft at the flywheel (472 rwtq) It's always shifted slicker 'n snot. I do believe the tranny's under rated from the factory..

Dave

[blykins]

I'm sure you're right Dave. In engineering, there are certain things as "safety factors".

The TKO is rated by "continuous" torque, not peak torque. So if you put this thing on a dyno, you could make it hold 600 lb-ft all day long.

There are lots of things that we can do to increase the strength and shifting capabilities of the TKO as well. 700-750 lb-ft is very do-able with some REM polishing and cryogenic treatment of the gears, hubs, etc.

My advice to anyone that's in the market is to drive a car with each transmission. You may like one and not like the other. To me, the best shifting trans is a T5 or a Toploader. But the T5 won't last behind any power and the Toploader is only a 4 speed.