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The biggest advantage of split carbs is that you can shorten the intake manifold length........not sure that would be good for a road bike

Good to know!

Oh, check out what I just found on eBay, NOS 900 intake manifold. Not like I need it but still.

https://www.ebay.com/itm/127036908864

Since the intake manifold dips down at an angle in the center due to the rotation or angle of the runners, I'm devising a way to straighten them up.

I think if I elongate the mounting holes in the manifold, I can rotate them about the center to change the angle where it mounts to the carb. The angle of the ends dips down in the center for a combined 5° total. The distance between centers of the intake manifold to the carb inlets differs by about .030", or you could round up to 1mm for error or metric ease.

Worst case to straight them I'd just have to make a shim at the correct angle and rotation of the manifold to the cylinder head. OR I wonder if that all can be avoided by simply swapping on a set of later SS or monster cylinder heads eh? Ok, over thinking there.

Mc tool wrote: ↑Mon Apr 07, 2025 7:57 pm The biggest advantage of split carbs is that you can shorten the intake manifold length........not sure that would be good for a road bike

I can see how that could be advantageous... But I just want this to have a reliable carb system. I wanted to avoid the headache of dual split cables by going with banked system but I think now I have even more of a headache trying to figure out what to do about the carb mounting angle.

Also... I could just say forget about the mounting angle and use the rubber intake boot to compensate for it. As long as it seals it's all good right? Maybe not optimal but it'll work until the end of the year when I might be able to dig further into the bike.