i agree with jake on this, a 4 bbl due to having smaller primaries than a 2bbl will usually give you better mileage, as long as you stay out of the secondaries.
if you just have to stay with a 2bbl and are looking to stay with holly, i would reccomend their 500 cfm 2bbl. other than that most 2bbls are only going to flow about 350 cfm which just isnt really enough to realize the full potential of your truck
eric
if you just have to stay with a 2bbl and are looking to stay with holly, i would reccomend their 500 cfm 2bbl. other than that most 2bbls are only going to flow about 350 cfm which just isnt really enough to realize the full potential of your truck
eric