Hi fellas, just thought I would show yas a custom side draught manifold I have built.

I couldnt seem to find any side draught manifolds to suit the large oval port heads, so I built one.

This one is a prototype, I will be remaking it in stainless after a bit more testing.

I have built this manifold to face foward as it allows clearance for air filters, and also positions it at a convenient angle for ram air / forced air induction.

In the top photo you can see that cylinders 1 & 2 are closer to the carb, I have made the pipe to 1&2 more curvy / complex to slow the airspeed a bit, while the pipe to 3&4 is much straighter. This is done in an effort to equalise the intakes.

Have done a bit of test driving, and it seems to have very good response and broad spread of power (no dead spots).
It idles on the lumpier side of smooth, and has a very throaty growl.

Not sure of performance for comparison, but it gets to 160 pretty quick!
need to look for a 5 speed now....

Any ideas? suggestions?