The 70 chevelle has been running strong until recently, the carb has once again gone haywire. I was thinking of also going to a bigger carb for my setup. I have cleaned it and now we are back to good operational condition.
What is the ideal Holley Carb & CFM combo for best performance with my current setup.
I know the issue with the carb is the ethenol is likely deteriorating my current fuel lines, which is about every year or so, the carb will need to be fully cleaned. I drive almost daily so this has been done before. Last time I just replaced with a fresh Holly 600CFM/vac secondaries a little over a year ago.
So my next step is stainless fuel lines, new tank, and new cab (better/bigger), new fuel filter, so I should be able to go more than a year without some issues with the carb contamination.
I drive the almost daily, but like to mash the throttle and would like to get as much driving performance form the engine as possible. Not worried much about gas mileage.
My mildly modified setup:
383 stroker/votec heads/mild lunato vodoo cam/MSD Ignition/heman headsers/3.73 10 bolt/electric fuel pump
What are your thoughts on the following?
What is the best Holly carb (I have had several and like/understand them)?
What is the proper CFM given my current setup?
I was considering the Holley Street HP 750CFM, although I saw on holleys website this is for a high stall application. Also my current full throttle 700r4 is shifting around 4200 at WOT.
I know there are several legends on this board, so thought I would ask here before making a decision. Thanks in advance.