i think im going to replace my 4 barrel afb with a eltlbrock and i need to know what cfm it is //////// would you go any bigger that a 600 on a stock 300???? as always thanks for the input pete
Pete, My 2 cents is to stay with the stock AFB. Changing over to something else means you have to bojack together something to make your Switchpitch linkage work. I have changed out carbs 2 times to new Edelbrock replacements (didn't learn the first time) and never had much luck with them. Sticky floats, wrong jet sizes, etc. My lastest acquistion had an Edelbrock carb and it was way overjetted. I rebuilt an AFB, installed it and now it runs smooth as silk. I say rebuild your original AFB. You'll be much happier. Greg
greg id love to do that as id like to keep it original as possible BUT i got a kit from the carbking here on v8 did the best i could do and the damn thing leaks down /// gets bad milage has a hesatation and i can,t seem to cure it ///// on a differnt vane// does anyone know if the 300 should run ported vacumn or manifold atb the dist??? thanks pete
Pete, The vacuum for the distributor advance comes from the carb, not the manifold. If you can swing it, I'd highly recommend Daytona Auto Parts in Daytona, FL to rebuild your AFB. They will rebush it so it won't leak and jet it properly to run on the 300 as original. It also looks just like a new carb when you get it back. I have had a couple AFBs done by them as had a couple of my buddies and everyone was very pleased with the results. Dollar wise I seem to remember around $400 for the rebuild. Call them for a price. That isn't too bad when you figure what you have to spend for a new Edelbrock or Holley and you still have to figure out the linkage. As I mentioned in my last post, I was also not impressed with the out of box runability of the Edelbrock carbs on my '65 300 (355). Greg
