Guest Posted April 24, 2001 Share Posted April 24, 2001 Can a '68 430 intake fit a '73 455. If so, does the 430 have better flow or any other advantages? Link to comment Share on other sites More sharing options...
Guest Posted April 24, 2001 Share Posted April 24, 2001 yes. will fit. be careful if the 73 heads have 4 small holes for the AIR ports on the intake mounting surface, you should make sure they are plugged, or that the gasket covers them well.<P>the only real advantage to doing this is lighter weight (the 430 casting is simpler) and removal of the unsightly emissions crap. however, this may not be legal in your area...<P>allan Link to comment Share on other sites More sharing options...
The Old Guy Posted April 25, 2001 Share Posted April 25, 2001 The430 manifold will only work if you plug the exhaust passages in the heads. if you look at the heads 0n a 73 ,you will find that the exhaust heat passage is almost square, and the passage in the manifold is long and thin. if you don't plug the holes,you will have a real problem. The AIR holes on the ends should also be plugged as they are not covered by the intake ,and will also leak. Link to comment Share on other sites More sharing options...
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