JimVette
Well-known member
Does anyone know the sizes of all the vacuum and plenum hoses on a ZR1. I looked in the service manual and could find nothing on sizes. I installed the Samco coolant hoses and thought it would look better with the red Samco vacuum and plenum hoses also. I contacted several companys that sell Samco but they only sell 10' lengths. I would be willing to buy the hoses if I knew the right sizes and make kits out of the remaining lengths available. They also list them in various wall thicknesses. Help!