I just bought an 87 W150 with a 318 that needs an intake and carb. I just swapped the truck over to an electronic ignition. I do not have any 318 inakes I have a few 360 4bbl and 2bbl intakes a 340 4bbl intake and an LD340 intake to choose from. I have a couple 600cfm 4bbls and a few of the large 2bbls off 360s. I know all the intakes I have have larger ports than my 318 heads, my local part store lists 2 intake gaskets for 318's the small port 2bbl gasket and the large port 4bbl gasket due to 4bbls using 360 heads. Which gasket do I need to run the larger port intake on my small port heads?
Thanks, Brian