5 speed upgrades

**alberta 7.3** · #1 (**permalink**) 06-15-2008, 06:51 PM

Okay, my rig has the ZF S5-47 trans, is there anyone who makes heavy-duty parts for them? I've had a chewed synchro since I bought the truck, and may as well do a total rebuild with the best parts I can find. I've noticed some parts places offer either bronze or steel synchros, which is the better option? Has anyone ever used a trans cooler that bolts in place of a PTO cover to help cooling and increase fluid capacity?

jfines@cox.net · #2 (**permalink**) 06-15-2008, 07:46 PM

Wow, I don't hear of that trans crapping out that often.

And I would go with Steel. Bronze is a soft metal. IMO

**RC51** · #3 (**permalink**) 06-15-2008, 08:15 PM

Ask Dan at Midwest trans. 1-888-824-2012

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