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72dually · 12-13-2006, 10:17 AM

The 3 speed muncies are indeed cast iron, and not aluminum. Most think all muncies were aluminum. My #'s matching 70 Buick GS 350 manual floor shift is a cast iron 3 speed muncie.
Here's a link to verify which unit you have
http://www.nastyz28.com/chevy-manual...tification.php

12-13-2006, 10:17 AM	#7
72dually Senior Member Join Date: Apr 2004 Location: Northern Arizona Posts: 687	Re: Muncie 3 spd Trans. The 3 speed muncies are indeed cast iron, and not aluminum. Most think all muncies were aluminum. My #'s matching 70 Buick GS 350 manual floor shift is a cast iron 3 speed muncie. Here's a link to verify which unit you have http://www.nastyz28.com/chevy-manual...tification.php __________________ 70 GMC shortbed fleetside with a 72 chevy costume Last edited by 72dually; 12-13-2006 at 10:43 AM.