How much does Champion Irons Flow? (Ball Park!!)

[87WE4BOOSTED]

I was reading in another thread that "Head Flow/Cubic Inch= Available RPM Range. Has anyone flowed their Champion Irons? I just need a ball park number....

 

[blackgn1]

Seems like it is around 205.

 

[87WE4BOOSTED]

Thanks for the reply. So would it look like this?

Head Flow~205x2 = 410/249~Cubic inch= Available RPM

I'm learning.:redface:

 

[blackgn1]

I dug around and found the Champion flow numbers. 198-200 Intake and 156-158 Exhaust @ 500 lift. These numbers where from Champion a couple years ago. Hope this helps.:biggrin:

 

[87WE4BOOSTED]

I dug around and found the Champion flow numbers. 198-200 Intake and 156-158 Exhaust @ 500 lift. These numbers where from Champion a couple years ago. Hope this helps.:biggrin:

Thanks!!!

 

[t-typinator]

I dug around and found the Champion flow numbers. 198-200 Intake and 156-158 Exhaust @ 500 lift. These numbers where from Champion a couple years ago. Hope this helps.:biggrin:

Just for comparison.
What are the flow #'s for stock heads?

 

[86brick]

flow #'s

They flow enough for a 3500lb+ car to run at least 9.30's!

 

[GNBRETT]

doh!

 

[bison]

A lot more too it than flow. For 99% on here even if they flowed 300cfm intake they wouldnt make any more power.

 

[Quik Six]

I was reading in another thread that "Head Flow/Cubic Inch= Available RPM Range. Has anyone flowed their Champion Irons? I just need a ball park number....

I found this link that has the answer to your question; see chart at post #22.
http://www.turbobuick.com/forums/engine-tech/305678-increasing-valve-size-stock-heads.html

I think the formula mentioned is for RPM where peak HP occurs is at http://www.wallaceracing.com/calc-peak-hp1.php.

 

[GNDriven]

A lot more too it than flow. For 99% on here even if they flowed 300cfm intake they wouldnt make any more power.

At what CFM would you say a stock cubic, stroke motor would no longer make any additional torque/HP at say 20psi?

 

[TurboTnZ06]

At what CFM would you say a stock cubic, stroke motor would no longer make any additional torque/HP at say 20psi?

The answer is when you run out of money.

Look, best bang for the buck I've had was just take a stock head and bowl port it in combination with a small roller cam. Went from 17 psi running 13.0 @ 104 to 17 psi running 11's at 115 mph. Trying to figure out a magical cfm number doesn't change the amount of material removed in the right spots for the best investment. Don't worry about the intake or exhaust port matching. Should be able to go high 10's with these cars without breaking the bank. If you want to go 9's or faster that's when you start to think about each little tweak, and it gets a lot more expensive.

 

[turbofabricator]

Last time I checked, we don't race flow benches. ('cept for guys the really never make to the track) There is alot more to making power than flow numbers. A good flowing head will make more power than a poor flowing head. Add to it a turbocharger and a poor flowing head can still make great power. Turbochargers cover up alot of discrepancies in a build. Port volume is critical to making power in a turbocharged engine. There are modifications you can make to an iron head that will show nothing on a flow bench, but make big gains in a boosted engine. In otherwords, don't get all hung up on flow numbers, instead, rely on building the right combination of parts. There are many good head porters out there. Who's the best? THAT is an argument that will go on and on forever.

 

[Ed Valvo]

Ken is right. Although I've personally never seen a set in the 9's yet on a 231 CI engine, I have seen numerous 10 second cars with these heads. Don't worry about max numbers. We've flow benched a few sets of CNC Champion Irons in the past 14 years and all were slightly different. Even had a set of their original hand ported irons! Most head shops only flow one port anyway unless you spend $$ to have them all done. They've changed their port sizes over the years to compensate for core shift and thin port walls cracking after the head is torque on the block. Although you could do better, you could maker better use of your money in other parts. Just my opinion.

 

[GNVYUS 1]

I'd bet the #1 head flow #"s in Quik Six's link, post #22, is VPE.

If the 200ish cfm from the Irons are too low for you, you always have max ported TA Heads which can flow closer to 290cfm for MEGA $$.