If it is a V8 first thing you wanna do is drain your antifreeze so that way when you pull the intake off it doesnt dump all the antifreeze down the oil ports also make sure you mark you distribtor and the wires so you know how it goes back on and plug off the hole it comes out off
Eazy way to remove your intake after you drain the radiator pull off top hose from raditor remove all hoses throttle lines from intake next take out the intake bolts dont worrie about the carb unless your replacing it if the intake is stuck on and all the bolts are out take a long but strong screwdriver NO PRYBAR!!!!! and try and dig it in btween the intake right at the front where the distribitor goes try prying it loose
After it pops loose slowly pull the intake out next take some rags and cover up the lifter valley take some paper towels stick them into the intake ports(so no old gasket gets down them) next you will have to scrape all the old gasket off the heads and on the front and rear of the motor where the intake seals I like using a angled dye grinder with sandpaper pads so much faster if not a razor blade and a fine grit sandpaper will work
After that if your using a new intake go over it a lil withe the sandpaper around the ports then wipe it down with some rubbing ac
Most gaskets sets come with cork gaskets to seal the front and back of the intake chuck em they never seal get some high temp black silicone and on the motor where the intake meets the front and back take the silicone along that ridge build up a pretty nice size wall front and back then put your gaskets on DONOT use anything to hold the intake gaskets inplace once it dries it can make a tiny air bubble and cause a leak
Set the intake back on top make sure everythings lined up before you drop it on let it set for about 30min so the silicone can dry a lil then bolt everything back up
Hope This helps my fingers are cramped now lol.......
I'm assuming you have a V-8, so 'bout $180 or so for the intake and gaskets, In stock at my nearest AutoZone, a Saturday afternoon with a buddy, and a 12-Pack will get this job done. It's as simple as pulling off your carb, and old intake and replacing with the new part. This job is easy.