Fastest/ most powerful slant six?
I have been toying with the idea of a turbo/fuel inj slant six for years. I was pleasantly surprised to see some of the hp figures listed here. Has anyone sever seen studies done on intake runner length? I had been thinking of combining the higher flow of a turbo-fed engine with the long runners of the hyper-pak manifold, but perhaps this isn't necessary?
I am not sure, RE: the runner-length. Here's what I know...
Both Ryan Peterson [ame="https://www.youtube.com/watch?v=7QzUfV8iTpQ"]Turbo Slant Six 10.74 @ 127 mph 7-19-10 - YouTube[/ame]
and Tom Wolfe's [ame="https://www.youtube.com/watch?v=EAxRmoDgsdY"]Turbo charged Slant 6 11.02 @ 120.56 - YouTube[/ame]
engines make a little over 500 horsepower, each. Ryan's engine has a long-runner Hyper Pak manifold while Tom's has a short-runner aftermarket (Offenhauser or, maybe Edelbrock?) 4 bbl manifold.
Otherwise, the engines are pretty similar.
So, it looks like either manifold worls for a high-horsepower slant 6.
But, I have an online friend who is a consultant to the engineering departments of a couple of the BIG auto manufacturers, and he told me to get rid of the long-runner Aussiespeed manifold I use. He makes his living, giving advice like that to manufacturers, so I tend to believe him when he talks.
When I bought my long-runner nanifold a few years ago, Aussiespeed didn't yet offer a short-runner manifold, so, I bought what they had...
I probably need to exchange it for a short one.
My advice; get a used Clifford manifold off ebay for whatever you can make the deal for; I think it'll work well for you...
What car is this being installed in?
