GM 2/4 bbl carb cap 78mm 128mm for washing engine

GM (Chevrolet GMC Pontiac Oldsmobile Buick Cadillac) 2bbl 4bbl carb cap 78mm 128mm.  Wash down cap that can be installed on a 2 or 4 barrel carburetor to keep water from getting in the intake.  2bbr carb cap is based off of a 1972 Pontiac LeMans with a 350 and a 2 barrel carb.  4 bbr cap is based off of a 1995 Mercruiser Mag350 with a Edelbrock 1409 carbutetor.  Prevents anything from getting in your intake during painting/cleaning/storage! 

The bolt hole has a 0.2mm thick bottom that needs to be trimmed out. This was left in the model so that the printer could so an uninterrupted edge to edge bridging on that layer, eliminating the need for supports!  I printed this with 2 perimeter layers, and 10% grid infill out of PETG, 5mm inner and outer brim due to using PETG, no supports.