Manifolds vrs Headers on the Caddy

[dlbrando]

I always think of tri-y being when the runners on a line six are correctly mated into two groups of 3. And yes, long tubes will probably flow really really well. the scavenging effect generated will pretty much drag the air right out of the cylinders. I had to use a different set of mufflers with a few bends in them to create enough BP to get the o2 sensors to read.

 

[Chris_M]

as said earlier, with that much compression, whynot just run propane??? and a properly sized mixer/pair of mixers will flow enough for the revs that caddy can do.

 

[Ricky B]

well when i get some money, im gonna cam it and redo the vavletrain so that I can rev it more like a mustang or camero rpm range, can propane handle that? I still just hate how it smells too

 

[bcammons21]

Yep Tri-Ys on a V8.
Ran em on my old Mustang for years, actually thats where the design came from if Im not mistaken the Shelby racing development team.

Front two cylinders Y back two cylinders Y then the twoYs Y

So it looks like

\/ \/
_\/

Or here is a pic: http://www.cal-mustang.com/showdetl-7-3306-19-0.html

so its like a 4 into 2 into 1 on a 4 banger, kinda sorta?

 

[Rich]

so its like a 4 into 2 into 1 on a 4 banger, kinda sorta?

yup