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is this T56 big !

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Old Feb 28, 2005 | 02:34 PM
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Hi

My new GM-T56 Viper tranny beside the original M21 from my 68 Vette.
What a size difference, I hope it fits into the tunnel .

Günther


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Old Feb 28, 2005 | 02:37 PM
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Hope it fits too since I'll be ordering thre same tranny this Summer.
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Old Feb 28, 2005 | 02:49 PM
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It will fit. Already done.
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Old Feb 28, 2005 | 02:55 PM
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It will fit just fine. When I did my T56 install, I had to cut out the shifter opening in the tunnel so I could remove the shifter from the top.
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Old Mar 1, 2005 | 10:04 AM
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I've got the same thing planned for my car. Let us know how it goes and good luck. Also, could you figure out your best MPG in sixth gear cruising a flat freeway at 65 mph. I'm hoping you come up with something over 20 MPG.
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Old Mar 1, 2005 | 10:16 AM
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Hi

The BB should run with around 1.625 RPM at that speed, so just above idling.
I probably have to reinstall the small 650 CFM carb again.

Günther
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