The old "Camel Hump" heads don't have bolt holes. Casting numbers 461, 462, 186, 187 & 291(last three digits). There's also casting 041 which has the same combustion chamber, intake runner cc etc as the 461's but was a 327 truck head. They have a single triangle which angles upwards from the intake side to the exhaust. Alot of folks aren't aware of these and you can find a set alot cheaper than the old Corvette camelhump or "fuelie" heads.
Last edited by 5wests; 04/27/2012 1:14 AM.