'91 Dakota sport

[Duxman]

To any one out there I'm thinking about changing my 2barrel holly carb to a 4 barrel. Ineed all the help I can get this will be my frist project working with carb's.
Thanx's

[76 Mustang II]

The formula is CID x max RPM — 3456 = cfm required.

example:

302 x 6500 — 3456 = 567.9976 or 570cfm

[danny]

hey 76 you posted that on another thread too. anyway duxman the change to a four barrel carb should be made in conjunction with other parts, such as an intake manifold designed for your purpose, possibly headers to evacuate the exhaust, but before you purchase parts and throw them on your engine you should devise a plan and go from there. i.e. do you want a full out street machine or just a performance upgrade.