What would it take to make 1.44 lbs-ft per cid ?

Calculated recommended head flow cfm for a given cid and rpm.


RPM. 4,500.....5,000....5,500....6,000....6,500....7,000

273. 150.........167......184.......200........217......234 cfm

318. 175.........194.......214......233........253......272 cfm

340. 187.........208.......229.......250........270......291 cfm

360. 198.........220.......242.......264........286......308 cfm

408. 225.........250.......274.......299.........324.....349 cfm


Roughly the cc needed to get 260 fps for a given cfm.

150 cfms = 110 cc, 175 cfms = 130 cc, 200 cfms = 150 cc, 225 cfms = 170 cc, 250 cfms = 190 cc, 275 cfms = 205 cc, 300 cfms = 225 cc, 325 cfms = 245 cc, 350 cfms = 260 cc.