Flow numbers .my. Vortecs

[Mkid]

Flow benched my vortecs{ported}...

INTAKE
235@400 lift

Exhuast
160@400 lift

 

[Mkid]

I wonder if i could run 10's with these heads, my 412 cam and a PTE 54?

 

[Windedv6]

Did you get .500 lift flow numbers?

John

 

[Mkid]

no

 

[JSM]

Not much of a flow test then IMO.

 

[jwaller]

if you paid for his test I'd demand my $ back. go back and get the entire test but it doesn't look to be anything ground breaking. kinda low actually. you also need to have all the other numbers that go with a flow test like temp humidity baro pressure and weather or not he uses a test pipe on the intake or exhaust. this is a way a lot of ppl cheat as well and hundreds of others.

 

[bigtime]

You need to get the flow numbers for where max lift of the cam is. Your number is not that bad for .400 lift. but your cam has .500 lift or more depending on rocker ratio.

 

[Mkid]

Gatch ya .......

I'd just ad another 10 cfm or soo on both of those numbers and that should be about right.

 

[MikeRenz]

I'd just ad another 10 cfm or soo on both of those numbers and that should be about right.

i wouldn't assume that

 

[bigtime]

Gatch ya .......

I'd just ad another 10 cfm or soo on both of those numbers and that should be about right.

Where did that equation come from?

 

[Mkid]

Its a guess....

 

[steve-o]

I flow test and build heads for my job at cosworth. And regarding flow, most of our emphasis is between .200" and .400", or half lift.... which is where the valve spends most of it's time anyway. In most all of the street and race heads I've tested, granted not vortecs yet, usually don't flow that much more from .400" to .500" valve lift.... for intake and exhaust. But it is always good to get a complete flow test so it's not a mystery. After all, in your aplication your valves will operate in that .500" range even if it's for a split second. Better than no flow test at all though. But 10cfm? Mkid, dude, you just can't guess stuff like that.