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Jan 8, 2019 | 01:19 PM

pdmetz

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4th Gear

Joined: Jun 2013

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Trans swap

Does anyone have any information on swapping a ZF six speed transmission to a T56 transmission on a 1989 Corvette?

Jan 8, 2019 | 06:52 PM

Kevova

Le Mans Master

Joined: Sep 2013

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From: near the thumb in the mitten

The challenge will be mount for "C" beam

Jan 8, 2019 | 09:58 PM

pdmetz

Thread Starter

4th Gear

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Quote:

Originally Posted by Kevova

The challenge will be mount for "C" beam

Thanks Kevova... That's my impression also

Jan 8, 2019 | 10:35 PM

ChumpVette

Safety Car

Joined: Jun 2010

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Just curious what you think you are gaining going to the T56?

and if you’re industrious to install a T55, you should be able to fan your own C beam plate to mate up to the T56. It’s been done before.

Jan 8, 2019 | 10:54 PM

pdmetz

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4th Gear

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Hey chumpvette... Please correct me if I'm wrong but here's my dilemma. I have a 89 C4 with 142k on it... The dual mass flywheel starts to knock when the car gets warm... I suspect that the flywheel is getting warn out... From my understanding I can't get a replacement flywheel anymore and I don't want to retro fit the flywheel with non dual mass flywheel .I heard that the ZF transmission will start making noise if retro fit the non dual mass flywheel... So I'm just exploring my options. The other option is to switch to automatic which I don't really want to do.

Jan 9, 2019 | 09:24 AM

Kevova

Le Mans Master

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From: near the thumb in the mitten

They both can rattle at idle in neutral. With the ZF the DM flywheel was to reduce noise. With the T56 it became a characteristic. It doesn't hurt anything, It's partially set up by reducing internal friction within engine.