Resin 3D printed GM Muncie SM420 Heavy duty 4 speed, perfect those truck builds that need that "grannie" low gear.
3 pieces includes SM420 transmission, smooth bellhousing and finned bellhousing. Finishing and assembly required. Comes in raw resin.
3D design by Scale Auto Model Works
Resin 3D printed GM Muncie SM420 Heavy duty 4 speed, perfect those truck builds that need that "grannie" low gear.
3 pieces includes SM420 transmission, smooth bellhousing and finned bellhousing. Finishing and assembly required. Comes in raw resin.
3D design by Scale Auto Model Works
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