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W2 & W5 pattern are one and the same. The only difference being the Intake gaskets having rectangle intake ports.

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Yes, you are right, my Swedish friend! Sorry for my ignorance. I checked with my ported W5 heads and they are almost the same, but a little better (as in the Shady dell pictures), and my W2's are not that extreme. But the fact is still there, if you draw a line through the bolts the clamping force is uneven and can cause an exhaust leak on top. Maybe a thick flange and some heavy washers can improve it.

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Hello there my friendly western neighbour

Might just be that the boltpatern realy is just a W2patern with the ports raised above the W2´s centerline leaving the boltpatern,some kind of weird way of trying to make the upgrade alitle simpler and cheaper in the first place and might just have worked for those who ran bigtube headers with adaptorplates back in the day going from W2 to W5 and now its stuck on the victorheads aswell

i do agree that it seems alitle less than optimum for sealing but i think it should work alright with good gaskets and flat flanges

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Please excuse my ignorance but what is this (circled in red)?

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Please excuse my ignorance but what is this (circled in red)?

Also, am I understanding correctly the current consensus is W-5 Intake port pattern and W-2 Exhaust port pattern??

Thanks

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like posted the hole in hte circle is wateroutlet.

i think its just bassicly a W5 with hopefully a much better casting

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Please excuse my ignorance but what is this (circled in red)?

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That looks like a threaded boss for water like W7/W8/W9's have

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Thanks Laverne
Kind of what I was thinking but I'm no small block expert

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Auto X..Sign says 361-440 E street heads... Pic #5

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HAHA, funny, the Edelbrock bigblock head is just an improved version of the 915. You could just as easily say that the 440Source head is a copy of the 915 as well.

But seriously folks, think about it. If one is going to design a head that uses the stock Mopar intake and exhaust port flanges, at the same location in space, and use a stock length valve, valvespring and rocker assembly, how much variation can you get? OF COURSE they're going to look similar.

Where I fault the aftermarket street heads is:
1. Copying a 1967 combustion chamber when THEY KNOW there are better chambers, they build them for other cars, and
2. Using stock length valves. this limits the available height of the runner

I have to think that one could build a better street head with longer valves which uses the same rocker assemblies, most likely by changing the valve angle, while also using a modern combustion chamber. It's a shame it hasn't been done, because with those two or three examples on the market there isn't room for a startup now.
I'd like to see what Trick Flow could do, for example.

R.

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i agree to a certain degree with ya,however being this head has to go on a 48* aftermarket block it kinda took out the weekend cruise guys.9 of 10 would go with a w7,8 or 9 going the aftermarket block route because there's def alot more power to be had with the above mentioned heads.JMO

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i agree to a certain degree with ya,however being this head has to go on a 48* aftermarket block it kinda took out the weekend cruise guys.9 of 10 would go with a w7,8 or 9 going the aftermarket block route because there's def alot more power to be had with the above mentioned heads.JMO

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Andy, that aint no 48 degree head.. the pushrod holes look like 59 to me, but a little mill work they could go on both.

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It's not a 48 degree head.

I assume if you don't have a R-block with the extra head bolts, you just cut them off.

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It's disappointing to see some of the replies on here. A company steps up to a limited market, comes up with a true performance head that can be fitted to a sportsman/ enthusiest type build without exotic parts, and there are complaints?!?!
This head is an awesome offering to mopar guys, and we should be praising them for it, then placing orders. The detractors need to turn off thier keyboards.
I would like to see this head offered as a bare casting also, It clearly has alot of potential.

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Yes...I'm complaining! I've sold off nearly everything W5 as this head was in the catalog back in 2012. I was plenty happy with the performance of my stock block W5 mill, but the casting quality of the head was miserable. Brittle, and as we learned the hard-way....couldn't be welded. We had a short turn which was ported too thin and caused us lots of grief. Ebrock has had a history of quality castings and it looked like this head would fit the bill....but it's still apparently made of "unobtainium". I believe the biggest delay in their hitting the market is the huge gamble of getting their return on investment. Pretty niche market anymore... I've moved on to a W8 build, but still hope to see these heads become a reality.