SS Lancer
Well-Known Member
How do these figures stack up against out of the box W2 ?
Shady dell speed shop shows a stock W2 head being just a shade (about 5 cfm average) ahead on the low lift flows down in the fat part of the valve opening, and the ported Edelbrocks start to gain a slight edge at the maximum lifts. The ported W2's show just how much more efficient the W2 port is from the onset... What works at low lifts continues to carry over to big gains at higher lifts, a rare quality in an inline valve wedge type head.
Shady dell speed shop shows a stock W2 head being just a shade (about 5 cfm average) ahead on the low lift flows down in the fat part of the valve opening, and the ported Edelbrocks start to gain a slight edge at the maximum lifts. The ported W2's show just how much more efficient the W2 port is from the onset... What works at low lifts continues to carry over to big gains at higher lifts, a rare quality in an inline valve wedge type head.
About equal with fat stemmed 2.02/1.60.
There is, IIRC, 2 or 3 people here running W2’s with dead stock ports and, again, IIRC, one fella is running mid 11’s with of all things, (gasp!) a MoPar Purple camshaft!W2 out of box?
Who runs them that way?
I vote w2 and dont look back unless your higher in the w series.
There is, IIRC, 2 or 3 people here running W2’s with dead stock ports and, again, IIRC, one fella is running mid 11’s with of all things, (gasp!) a MoPar Purple camshaft!
What cam and compression in what size engine?Me unfortunately at this stage! 11.7 at 116mph with a less than ideal converter and 3450lb barracuda. I wanted it together at the time so didnt get them ported but thought they left me more scope for later compared to the edelbrock rpms.
Its all just bench racing
true... but it is the only way we have to compare for conversations sake.
And even if my heads flow way better than another guys on the same bench he may run better due to the rest of his combo.
Its all just bench racing here for amusement and fantasy..
That it is!!
True. My porter gave me one set of numbers, my builder gave me a set 13cfm down at peak.What if the shape of the curve is similar but one set of numbers is 10-20cfm higher?
You can dismiss it as a different bench......but maybe there really is that much difference in flow(or more).
When the numbers come off the same bench........ you know.
When they don’t...... it’s just speculation.
The other thing is, not all benches operate the same way, which can also influence the shape of the curve.
-Ootb w2’s....... every set I’ve seen had noticeably different port bias between left and right intake ports.
Ootb, #1 has always flowed more than #3 for me.
So, whether it flows 260 or 240 can easily just be the difference of which port was tested.
What cam and compression in what size engine?