Chevy 193 Swirl port Mission Impossible

[Carnut1]

I go pretty deep down the rabbitt hole to prove the work I did on these in the 80's was pretty good. Lots and lots of wasted time but a good learning curve. My buddy Stevie talked me into this insanity so it is all his fault. The basic idea is to run a 9 sec 1/4 mile with the worst Chevy heads in existence. We don't have a chassis but if we need to use my Chevelle we will, it is heavy, which will be a problem. The basics so far will be a worked up 400 2 bolt block, we are thinking 393 cubes internally balanced to reduce flexing and harmonics. Pretty high compression maybe 12/1? 6.2" rods, Mike Jones custom cam, fairly high rpm 8k? Tunnel ram. It will take a good amount of time to get this all worked out but intersted in productive input. Yes, we know it is a dumb idea. Proving that things can be done after being told it can't just winds me up. I will see if I can figure out a way to link to my Youtube channel. Thanks, Charlie

[Carnut1]

https://youtu.be/omTP621fs5o?si=E5uLNl990xcw-h0Q

[Carnut1]

Screenshot_20231215_112959_YouTube.jpg

Screenshot_20231215_112925_YouTube.jpg

Screenshot_20231215_112822_YouTube.jpg

Some screen shots of later developement videos.

[juuhanaa]

Im thinking 7000rpm, but from which intake manifold would give you a 2,5in2 average area and 10inch long runner with the cylinder head?



-juhana

[Carnut1]

I do have a Vic jr tall that flows about 320 but I think it really needs a tunnel ram. They are really hard to find! Thanks

[juuhanaa]

A smaller area may work better for a shorter length, but what do you think Vic jr tall and the head opened to 2,5 would flow?



-juhana

[Carnut1]

No idea.

[juuhanaa]

Have you thought removing the swirl ramp completely, or making the port bigger?

A different approach but might be something worth exploring into, what size can it even be ported to?



-juhana

[Carnut1]

I don't want to do that and have no idea if that is possible. I do want to keep to the original design as a swirl port. Maybe someone on here remembers the old Edelbrock turbulent charge cylinder heads?

[cgarb]

You guys have way too much time on your hands...lol.

[FC-Pilot]

Stick it in someone’s light front engine dragster. It will run 9’s. Then you don’t have to push a rock up hill.

Paul

[steve cowan]

Have you done the calculations to see if you can or achieve enough area for the rpm and cubes?

[Tom68]

Have you done the calculations to see if you can or achieve enough area for the rpm and cubes?

Could always put them on a 302 or 327 and rev it.

[Carnut1]

Have you done the calculations to see if you can or achieve enough area for the rpm and cubes?

I don't do calculations till I am close to the end of developement. I use port air speeds. Thanks

[juuhanaa]

That head is undervalved, but you got it flowing to meet the demand which is cool.

Try make one port with a larger CSA in mind for comparison. Who knows what that head can flow with that deep bowl?



-juhana