Can anyone tell me exactly what these are ? I know they are stage v custom, but thats all. The inside diameter of the intake seat measures 1.990 and the exhaust seat is 1.590. What would the valve sizes be, standard or bigger ? Are the exhaust ports raised or in the standard location ? Thanks

Ok Im guessing standard valves. Does the exhaust look raised or standard ? Thanks

Raised. Really with the unfinished work, you can raise them a little more or lower them if u need to. I am assuming there is enough metal around them to go either way. Have u thought of calling Stage V and discussing with them

Thanks, but I think these are a different casting. The replacements dont have the dualplug option. I tried Stage V, no email response, and no one answering the phone. Thanks again

look like the one of the valves is rotated angle? Look like lots of room between the seats on those....
Stock replacement heads have standard lay out's i know...

Ok, I read that on the custom head they move the exh 2 degrees for larger valves, but the seats dont seem to be oversized

I know they rolled the valves to help valve to valve clearance with large cams.. It was a problem with stock valve heads and large roller cams with narrow centers.

i think what you have is the next step up from the replacement head,with would be the raised port head.

Ok I just found this ...

STAGE V CUSTOM HEADS
Price: $2,350.00

Quantity:

Brief DescriptionDetailed DescriptionSpecifications#S-426
(CLICK ON IMAGE) If you are building a high output motor based on an original or aftermarket 426 HEMI type block, these heads are for you. They have larger than stock intake ports and are capable of supporting as much power as you can build around them. In fact these heads hold the speed record at Bonneville for a wheel driven vehicle at 433 mph. Optional raised exhaust ports offer exceptional gains in breathing. Intake valve can 2.250 to 2.400 and exhaust can be from 1.900 to 2.000. Cumbustion chamber 168


It seems they have 3 different castings, the replacement, the custom -these, and the millenium. Im pretty sure the custom is what I have. ....My question is would the Custom head come with different seats depending on intended valve size or is it the same seat for 2.25 to 2.40 ? ? ? Thank you very much for your time guys

What is the outside diameter of the set in the head in the picture ?

about 2.25

The set of Stage V heads I had looked a lot like yours, the smallere exhaust ports, drill and machined for the future use of dual plugs and so on They where purchsed by the original owner to use on a seroius SS/AA car, he forgot to cll NHRA before buying them to see if they where on the approved replacemnt head list, they weren't So my customer bought them at a good price and we used them on his blown street Hemi project Stage V is really hard to get contact with, there way to busy, I guess, to take care of new business

Here are pics of replacement heads.

2nd

Intake side

Top

Thanks guys, I spoke to a stage v dealer today and was told the heads are machined, seats installed as per order. So it looks like these were ordered with standard valves. So should I get them cnc'd and assembled or get the new Indy 426 Hipo ??? Will be going on a 588 - street strip car show cruizer,.... with an 8-71.