: what holley 425

05-28-12, 02:53 PM
can anyone say what the best holley carb for a 425 is ? thanks

05-30-12, 10:06 AM
As far as I am concerned they do not make a good replacement Holley for the Rochester. Holley did make a spreadbore as replacement, but they are rare and hard to find. The Rochester will flow up to 850 cfm. and you can tailor that, but it takes a lot of study. Believe me, stay with the Rochester. I should start rebuilding some of the carbs I got hanging around.