So, see the difference? How do you attribute this variance? Better Molds to create the forms for the Castings? Better Quality Aluminum Alloys? Perhaps different plants where the cases were poured. Ever wonder how many Muncie Transmissions were made? A whole lot. So therefore perhaps all opinions are correct. I am betting on Different Plant, better molds and better Aluminum Alloy! I think the "Heavy Duty" Muncies were different.
