V6 header pre-assembly stage

Photo is great, idea is not so feasible. The flow volume is incresed per cylinder, but the pipe size is constant to the flange and will significantly restrict flow. Just my opinion.

Dave

Yes that may be true, but the space options extremely limited when dealing with a engine conversion. Thou, this is a vast improvement over the stock pipe design that the I.D. was approximately 25% smaller. The flow may not be perfect, but will significantly be improved...

would you have enough room to take 90 degree pipes downward on about a 45 degree angle towards the back and put them into a bigger pipe? this is about the best i can draw it.... pretend that bottom line is connected
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i'm not really a pro with the exhaust flow theories, but it seems like it should flow alot better than if it goes straight into the pipe

Greg, that's exactly what I used, except for the 3-hole flange. For the previous responses, Dave, exhaust ports are 1 1/8", the fittings are larger than 1.25". The exhaust or ignition timing is front to rear, so the port will dump ahead of the next one behind it and effectively pull the exhaust forward to the 2.5" downtube beyond the reducer.

Simplemind7, there is no room to go down from the exhaust ports, the exhaust has to be routed forward and down in front of the engine.