The end castings are slightly different on 1300 & 1600 manifolds, the 1600 has a slightly bigger bore in the centre section, and the ends are machined to suit. For a 1776, I'd try to get the complete 1600 manifold, (or go twin carb).
I don't have access to Part numbers right now, but I can tell you that a 1600 carb won't fit on a 1300 manifold, the mounting studs are further apart on the 1600. Don't know the measurements, just know they don't fitjames_stan said:Thanks guys.
Anyone know the correct bore diameter (carb end, since head end they look to match OK) for the 1600cc intakes ? Or even the correct part numbers.