After exhausting every avenue locally , today I ordered one on eBay . I have one already , but everybody says that a 750CFM 4160 is just too much carb for a 305 small block GM motor even with the mods I've made . The one I ordered is a 600 CFM 4160 , and it has some differences . The biggest one is the fuel bowls on the 750 have center pivot floats and dual inlets vs the 600 has side pivot floats and a tube to feed the rear bowl . Both have metering plates on the secondaries and in all other respects as far as I can tell are identical . Is there anything inherently better about either center vs side pivot floats ? I have a full rebuild kit that fits both , so it will be torn down as far as they recommend . The stock quadrajet has problems , and I'm tired of trying to tune it . Everybody always told me Holleys are a lot easier , and I've always wanted to try one so here we go !
1 year ago