BBC Intake Manifold Casting Numbers
IRON OVAL PORT - Rochester Q-jet 4V
Casting #	Years	CID	HP/RPO/Config
336789	1974	454	235, 270
346242	1975	454	215
353015	1973	454	215, 245
393841	1973-75	454	215
3856289	1965-66	396	325 L-35
3866948	1966-67	396	325, 360 L-34/L-35
		427	390, Holley
3883948	1966-68	396	325 L-35
		427	385, 390 L-36
3931067	1969	396	325 L-35
		427	335, 390 L-36
3952900	1969	396	265 2V
3955287	1970-71	402	300, 330, 350 LS-3
		454	360, 365, 390
6263753	1972	402	240 LS-3
		454	240, 270