heads?

[68stcracing]

which head is better for this application.must be a gm head casting. vortec small or large bowtie port
rules are 9:5.1/360 max,
intake no taller than 7" from block to carb mount,
and also what carb size(brand and cfm) 1/4-3/8 dirt

[stockcar5]

small port if your limited to a 2bbl if carb rule is open i'd use the large port.

[68stcracing]

plan to run a 650 holley 4bbl