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| Re: '71 to '73 A12 intake interchange with later A12/A14? |
Subject: Re: '71 to '73 A12 intake interchange with later A12/A14?
by Gary_P on 2007/6/1 13:27:57
The thing that will trip you up trying to put an early intake on a later head it the center bolt hole. The later heads have 4 studs for mounting the intake manifold, outboard of each pair of intake ports. The early heads have 2 mounting studs that are between the pairs of intake ports. This is seen in the picture you have referenced.
To use an early manifold on a late head you need to drill and tap the mounting stud holes between the intake ports to mount the manifold. Also, you may need to plug the coolant passages that are in the side of the head if the Cannon manifold does not cover them.
Gary
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