this is old, but i saw a cool *** intake made from a spearco intercooler endtank, apparently you just by one end tank and it is already shaped and has a opening at the end, looked good to me. like this but it was cast alum,

 

That's a sweet idea, as long as the endtank has plenty of volume to act as a intake manifold plenum. Anyone know any decent and cheap end tank suppliers other than treadstone?

 

here is mine that corey and i made (mostly corey). we made the calculations for the runner size out of a efi tuning book tyler had. had a whole chapter on intake manifold fabrication. its got vstacks, 9" runners, and a ls1 75mm tb

 

^ that looks good

 

can you post of the formulas you used or the title of the book maybe?

Was it called Herllmholtz tuning or something like that?

Looks like good fab and should work nicely.

 

I'm curious as to why the v-stack would be any different than a standard convergent design from plenum to runners?

 

It has to do with the S type motion for better flow.
I don't know exactly why but thats all I could find on the subject.

 

Where'd you get those velocity stacks? I've been reading around, and people are using measuring cups, metal egg trays, all sorts of crazy cheap crap that you can find in walmart for velocity stacks.

 

I made one for a guy a while back, it's on a 2l Golf X-flow motor the guy used on an ovals track racecar....

 

so ARE these better for flow than the runners being flush? i mean, it looks to me like they would screw up the flow cause they are sticking up halfway to the top of the mani..or does it have something to do with the #4 runner not getting enough air?