All US small sixes had integral log manifolds which can not be removed (unless you physically cut them off). If it has a removable intake manifold, it has to be an Australian or Argentine cylinder head. Both are very rare in the USA, however some have been imported, so it is possible. If that's what you have, hang on to it. However, my guess is that you have a 240/300 (big six) instead, which won't work on a small six.brostang":6f6mxze3 said:I also have a spare 69 250 engine lying around, this has the intake manifold that can be switched. Good choice or no? Would i have to mill much on this style or can i roll with it right off the engine?
However, my guess is that you have a 240/300 (big six) instead, which won't work on a small six.
brostang":18jyfp03 said:I also have a spare 69 250 engine lying around, this has the intake manifold that can be switched. Good choice or no? Would i have to mill much on this style or can i roll with it right off the engine?
brostang said:There are no later model US heads with removable intake?