Does anyone have head flow #'s for a ported DS head(stk valves and bigger than stk valves)? I'm having my head ported and wanna see how it compares(i should have some #'s by the beginning of next week). If you do, please send to:

trackside_performance@yahoo.com or post em here on this thread.

If no #'s, how 'bout a link to some #'s?

Thanks,
-Mark

 

i had one of my heads ported and they used a flow bench, apparently they did a little work and got 30% more flow.

 

Thanks Sandman430, but i'm looking for actual cfm at different valve lifts. Also need the std with which it was measured...

 

With all these ported heads running around, surely SOMEONE has some actual flow #'s????

 

Does anyone even know the stock numbers?

 

Maybe an easier question is how much did the jetting change? What carb and how much richer? Before I went through my head the richest I could as a main jet with the 45mm carb was a 152.5 and get the hard skip at WOT. After some work I was able to run a 162.5. It would take more fuel so I assumed it was getting more air? What your thoughts on this?

 

were you faster with the bigger jets, i just saw a case today where a quad would run a 172.5 but when switched to 160 was 4 to 5 quads faster.

 

this is to sandman do you know the proper order of the needle washers and spacers i really need help tonight

 

check your pm.