tunnel ram

600vs carbs are fine, don't change them. install them inline, linkage is simple. jets and plates have to be the same. the vacuum cans have to be tied together, holley has the tops for this. buy two spring kits. your motor should pull enough vacuum to require the black spring in both cans. when using the lighter springs should you feel the motor studder it's the cans opening the secondaries to soon and you need to try the next stronger spring. the motor isn't making enough vacuum to pull gas up the emulsion tubes yet and needs to slow the blades down a little. you need to also buy two nozzle cam kits, try the quick green one first, it should be the correct one. the ram likes a very quick shot. your cam is just fine you don't need to change it. you'll find out the coming off a 1000 rpm idle will work real good.