[paul2748]

From what I remember from converting my two bbl 54 to a 4bbl, the part that attaches to the firewall is the same. The difference is a piece that attaches to the back of the intake that crosses the intake to the right (passenger) side.


Now both were V8's so I don't know if there is a difference in the piece of linkage that bolts to the firewall for a 6 cyl. If someone has a 54-56 two bbl car I hope they wouldl post a pic.


The intakes will swap with no problems. There may be some port mismatch if your using 55/56 heads with a 57 intake, but it should work ok. If your using the 55/56 intake, no problem


If everything goes right, below is a pic if the 54 linkage (2BBL). It's for an automatic, but the only difference should be the kickdown rod for the automatic Notice the piece at the top with two holes in it - this is the piece that bolts to the back if the intake