Originally posted by STREET-DREAMS-2
i have a brand new SBC 434 stroker with a holley 250 searies supercharger..and i dont know what size carb to run ..went to holleys web site and that was no help........ does any one have any info? need some help here......
GOT THE NIFO

cubic inches times max rpm divided by 3456 will tell you what size carb you
will need.

so...

434 times lets say 6500 rpms divided by 3456 = 817cfm that you will need for
your motor.

more rpms bigger carb