... a 4-hole base gasket and an 'open' one? What are the ramifications of using one over the other as far as performance and/or economy? Does some of the mixture get pulled into the secondary side of the intake using an open one when just on the primarys?
When I've ordered what shows as a 4-hole gasket from Cliff, I received an 'open' one and I'm just wondering what the differences are, if any.
