Tremec question

SMOKEDYA said:

Older series as in how old? peace
john

Click to expand...

As in two or so years ago, or older. The current gen of tremec TKO tranny comes in two basic forms: TKO500 or TKO600(the number corresponding to the torque rating or each respective gearbox). These are the ones Jeff is speculating about. The earlier generation models came in the old 3550 case: TKO, TKOII, TKOIII. These earlier variants of the Tremec 3550 specified GM synchromesh, though one could use synthetic. I also have heard that the new models are less picky about fluids.
Oh yeah, and the inner workings of the new models can be used to upgrade the older 3550-based models. I will probably upgrade my old TKOII with the TKO600 gear set. Otherwise, I will probably grenade the tranny at some point.

I bought a new T5Z and the fill tag said "GM SYNCROMESH ONLY"

Dan

I run royal purple in my WC t-5 works just fine.

The GM stuff in my 3550 was spendy, but I figured $50 worth of oil is cheap, compared to hurting an $1100 trans.

If I had a new tko series Id probably run synthetic atf.

DD