do you only use a 4 hole gasket if you have a 4 hole intake?
my intake has a big square hole, and I thought it was a dual plane, but I looked last night and the middle divider has a square cut out of it. What's the deal with that?
Also, my carb has some channels on the underside at various places. Should these be covered up by a 4 hole gasket, or uncovered by a square hole open gasket?
One more thing, there is a big hose connection on the back, is that for a pcv?
there are also two other ones. One leads into the primaries with some channels that I think is for the dist.
The other I can't tell, it has a tube on it now with a bolt stuck in the end, what would that be for?