Hi Russell, I don't want to sound overly negative or excessively critical, and it's sometimes somewhat interesting when people do an EFI conversion to their carb'd five. And perhaps that photo is not representative of what is going on there, but from that it looks like it shouldn't flow! There can be a fair bit of engineering to this task to optimise it, and from that it looks like none has been applied?
There have been / should be so many photos of EFI conversions around to have a look at. A few with 5GTT C1J's. philr5t 's one made maybe 330BHP from a single throttle body and a smoother looking manifold with no 90° bend in the middle.
That welding (brazing) on yours is terrible looking. Maybe it will grind off but should not be like that in the first place.
Have the people you're using ever done welding before? Or made and inlet manifold?
A few photos here:
https://www.rtoc.org/boards/member.p...ichael-tierney
philr5t photos seems to have disappeared.
Andrew Cooke photos seems to have disappeared.